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Step down transformer

Hi I would like to build my own power supply. i am a noob at electronics but hopefully this project will improve my skills... This is what I want to build The problem I am not sure on is the 1st initial step of the step down transformer. I have only found a 24 volts 4.16 amps with 100va. I want to keep the project as exact as possible and was currious whether if the current rating is higher than 3 amps for that particular circuit I want to build can it blow any of the circuitry. The transformer I found was 24 volts 100 va and has an output current of 4.16 amps. Is that a problem or will it only draw as much current as needed?  

Topic by Bedawee_zeus    |  last reply

step down voltage with a resistor?

Hey i used a 1 mega ohm resistor instead of transformer before bridge recifier and it works the led glow but the glow of led is very much less why???

Question by taylorsane  

Is this a way to step down DC Voltage? Answered

If i have a 12 volt supply, and would like a 9 volt supply, would there be any problems with connecting a 3 volt battery backwards to cancle out 3 of the volts leaving me with 9?If that is possible, will the battery be run down. image to explain.

Question by evildoctorbluetooth    |  last reply

where can a step up/step down transformer be used? Answered

I want to know, I am just curious where a combined transformer would be used.

Question by nerd7473    |  last reply

outdoor steps down a steep slope cheap

Steps down a slope so that we don't have to cut grass there, and also we have a tendency to slide down it!!! this area is near our back porch is flat for app. 4 feet then drops about 6foot over another 8-10 foot area. want to do this cheap but looks nice. we have 6-8 concrete pavers now and several smaller pavers

Question    |  last reply

Can you please explain this circuit? Answered

I am planning to create a step down switch mode power supply using only discrete components. I opened my charger and found a step down switch mode circuit without IC. I wrote the board's schematic by looking at each component one-by-one and found this... I does this thing works? I cannot understand the part of the circuit that is exposed into the mains.

Question by codestroy7    |  last reply

Reducing 110v transformer output? Answered

Hi all, as stated in the title I need to reduce the output of a 110VAC transformer. I'm using a US graco spray gun that is 60hz, and I understand that if I reduce the voltage to 90 this will compensate for the UK 50hz system. Any help is greatly appreciated

Question by dimmaz88    |  last reply

whats the easiest way to convert 120 VAC from wall to 24 VAC ?

A friend gave me a security camera without power wires. on the back it  has 3 power terminals  - 24 VAC - GND ( ground) - 24 VAC  should i just try to find a wall adapter that puts out 24 volts DC and then take it apart and take out the rectifier ?     im guessing thats how they work.   THANKS :)

Question by blackghost    |  last reply

3 scooter batteries in series: too good: 54 V!!!? Answered

For 2 months now I have an Aldi (low end) e-bike. The Li-battery allows 25-35 km travel (depending on terrain and wind conditions) on max power assist. According to specs, the battery has a voltage of ca. 40 V when fully charged, going down to a cutoff point of ca. 35 V when empty. For a relatively cheap 2nd battery solution  (to increase travel distance for another 20- 30 km) I put 3 brand new motorcycle batteries in series. Charged individually with a good (LIDL) charger, the batteries give a whopping 17.3 V, with a halogen light load15 V!! I don't dare to hook this up to my bike! Of course I can bleed the 3 batteries to ca. 13.5 V to make it safe, but so much capacity is lost! There has to be a common solution/ circuit: 55-41 V, ca.10 A, to a stable 40-36 V. Any suggestions???

Question by BobS    |  last reply

How to step down 110V DC to 46V DC?

Little about the beast: This is a home build rectifier made of x6 KBPC3506 which comes out to total capable throughput  of 210Amp This THING connects to an outlet via thick power cable. I measured the output when plugged and it is 110V DC. So this got me thinking is there an easy way to step down 110V DC to like 46V or 60V? WHY? Well I have an electric e-bike and just as a fun project I wanted to see if it is possible to replace the battery with portable gasoline generator and then AC 110V from generator turn it to DC and step it down to a little more than 46V. Of course I will have little baggie at the back of the bike :-)

Question by Redion    |  last reply

STEP DOWN TRANSFORMER 220v/50hz to 110v/60hz

I have some cordless power tools by Craftsman. Goes without saying they are 110v/60hz. Problem is I live in Australia where we have 220v/50hz. I need to purchase a step down transformer for the battery chargers. Could someone please tell me what spec step down I should get. i.e what output it should have. The biggest battery is 19.2v. Thanks for any advice

Question by Punzi    |  last reply

64 w solar panel without a charge controller or battries but using a buck converter for direct regulated power?possible?

Greetings and thanks in advance for all the help. i shall start with explaining the situation.  i am going to be in the remote himalayas for about 2 months with a expedition team and for all our charging needs  we are going to carry a few solar panels, most of them are small 5-15 watt ones . the problem comes in when i introduced the 64 w thin film roll able panel. the specifications for the panel are as follows Model PVL-64 Rated Power 64 (Watts) Rated Voltage 16.5 (Vmp) Rated Current 3.9 (Imp) Open Circuit Voltage 23.8 (Voc) Short Circuit Current 4.8 (Isc) i intend  to use 3 LM2596 ebay buck converters to get 12 volts and 2 5V USB Output Converter DC 7V-24V To 5V 3A Step-Down Buck KIS3R33S Module KIS-3R33S for usb power. All of these will have a common source of power (the solar panel) and have separate outputs as i need to charge multiple things at once.  will this setup work or i need to think of something else.?

Question by 1st rover    |  last reply

Laptop powerbank 12v to 20v and upto 5A output using 18650 batteries with USB 5v added

Hello ladies and gentlemen.  Im looking into buying a laptop powerbank charger for my Lenovo X1 carbon that charges at 20v 4.5A 90w fast charge with upto 80% charge in 1hr. But it will also charge at 65w and maybe 45w I've read. But this will not give me the full power of the processors and gpu etc. Unless I charge at 90w 4.53A  there are are some powerbank that are around £100-170 for sale but these don't give full 4.5A. Mainly around 2-3.5A so will maybe or maybe not charge she give me full power of the laptop   so I'm thinking about making me own using 18650 batteries. Good Samsung or LG 2500maH plus cells. Prob around 3000mah.  Im thinking I could either use a buck down or step up and use the batteries on series from 3S to 8S and then 3-4P to give me around 10000mah. I'm looking for the best efficient output so I'm not sure whether to use higher input or lower input to give me 20v.  Or or maybe I could go the inveter route using a 12-24v 150w inverter?? Efficiency is the main thing here. What is the best option do you think. Should I use 12v or 24v for max effecient conversion.  Ive searched the instructables for such devices but cannot seem to find anything like this. Or would I be better to buy one??? I would want to add USB and USB c also. Defo USB 2.0.  Could you you please help me choose and find the answers please?  I fancy the DIY route because I'm looking into solar and battery power storage and also boost my range wifi range through either ptp or directional attenna. These projects will come after the laptop powerbank.  Any my help would be appreciated a lot.  Kind regards.  Scott. 

Topic by ScottL190    |  last reply

How to step down and convert wall outlet to 24 VDC?

Hi I am working on a project and i need to convert 120 VAC from a wall outlet to 24 VDC to run my device. I was wondering if anyone has a suggestion if i should first transform the 120 VAC to 24 VAC and then convert the 24 VAC to 24 VDC? or if there is a 120 VAC to 24 VDC with a normal wall plug for sale. 

Topic by mkapler13    |  last reply

Help me step down AC voltage without a transformer?

Hi again. Well, the title explains everything. The goal is to make a 65W power supply the simplest way. I have capacitors and diodes, and I'll desolder other components if necessary. Just, if someone can give me instructions and detailing a little bit. May be you can post some schematics or useful links. I've already created the circuit schematic but I would like to see yours first. I will post mine later but it doesn't include the values of the components and maybe it contains some errors. It was enough hard for me to draw it. I'm no professional afterall!

Question by junkrecycler    |  last reply

What's wrong with using diodes to step down voltage for LEDs? Answered

I always hear that using a resistor to regulate current for LEDs is very inefficient, even for the low power 5mm ones What would using a zener diode as well as resistor do if I wanted to run, say just a handful of 5mm LEDs from 12V? Thanks

Question by .Unknown.    |  last reply

How to step down a 12v DMX LED Controller to 5v?

Hey i currently have an "Abstract MFD-10" DMX controller that i want to run 64 LEDs/2meters of "LPD8806 +5v Strips" off of. DMX Controller= Led Strips= How do i step down the 12v supply to 5v while maintaining the flow to keep the strips running effectively? If you give me the formula for it i can work it out myself and will post here with what i worked out as i enjoy doing my own workings but i am a bit lost with this. Also I am willing to simply change a component in the controller itself if this would be easier and cleaner (No external boards/components) Need anymore info just ask.

Question by Pathogenex    |  last reply

Besides stepping up or stepping down a voltage, how does a transformer change the output put into it? Answered

For instance. Say I have a square wave of 9 volts created by a 555 timer at the frequency 1 kilohertz, and that is the input into a transformer designed to step up the voltage to 120 volts. Will the frequency be changed in anyway? Are there any changes besides voltage?

Question by Dirtie Hippie    |  last reply

Upside Down Heart Earrings

Hey guys! Just like to share something new I learned :) Obviously, it's a heart shape earring but what's interesting is how to create it and how to slide in the bead at the center of the heart. I had fun creating this cute thing from watching the video by Ross Barbera. I can't share the steps here as it's not my own, but if you like to find out how to do it you can watch it HERE. Cheers!

Topic by diylesson  

Lead-acid 12V-DC to 5V-DC for ATmega328 (SAFELY)

Hi all! I am currently designing a simple electronic device which uses Arduino-software. It needs to be connected to a car (Lead-Acid) battery of 12V and be stepped down to 5V for my ATmega328 to be powered. I read that I must use a "Standard 7805 5V regulator" for this. My question is, will it be able to cope with the heat? Must I put a heat-sink on it and/or is the regulator even "big" enough for this? I figured that using two regulators in parallel, might halve the current and help prevent over-heating. ( Another thing is, how could I go ahead and setup a small NiMH battery charger for this device which works like this: It runs of the car battery at all times and keeps the backup NiMH battery fully charged - as soon as the car battery gets disconnected, it switches over to the NiMH cells. (I will be using 4 of these for my backup-battery-pack See my attached schematic of what I have in mind, please tell me what you think about it. I have too little knowledge of electronics to solve this problem myself, but if you can point me in the right direction at least, I will try and figure it out from there. Thank you for your time!

Topic by louwhopley    |  last reply

Q: why does a 220v (down-step) regulator output 300v?

Hi, bought this 220v regulator (see photo). strangely enough the volt-meter shows almost 300v on the output (at zero load). otherwise it works fine. any ideas? gracias

Question by la xerra    |  last reply

UK 240 volt to US 120 volt step down converter.

Hi Folks. I was chosen as an alternative winner for the camera & photo skills challenge & received my printer a few days ago. My problem is that the printer I received is a US specification one meaning it is set up for 120v & in the UK we use 240v; I have been trying to find a 240v to 120v step down converter for it but so far have had no luck as I need one with a functioning earth & the only ones I have found are not suitable as most of them do not have a proper earth pin available, the few that do have an earth are far beyond my current available budget. I have tried EBay to no avail likewise Maplin, eBuyer & PC World; does anyone know somewhere in the UK that I can purchase a suitable one that does not cost the earth? (Pardon the pun) Thanks in advance for your help folks. Seasons Greetings to you all. Nostalgic Guy.

Topic by Nostalgic Guy    |  last reply

Question on charging 12v car battery with step-down transformer, safety issues Answered

Hello, I have an AC->DC step down transformer that outputs at 12v (max 13v, can be adjusted with potentiometer). It is rated at 10A. 1) If I were to connect it to my dead car battery would it even charge? If not, how should I go about charging it from the mains? 2) If it charges, would it charge safely? If not, do I need any resistors or fuses? 3) How should I monitor the charging or know when it's good enough for cranking? Thank you!

Question by pantss    |  last reply

Need to step down a lead acid battery from 12vdc to 10vdc 350mA

I would like to run a 6pcs 1W white led lights from a lead acid battery. A Single bulb input voltage is 3.2-3.6V & 350ma. I connected every 3 led's in Series (2 Groups) . Can I use 7810 IC or how can I do it. Sir Please send me a diagram . lead acid are in full-charge 14.5v. , in normal 12v, low 10v

Topic by Goldensathiya    |  last reply

How can I make a DC to DC step down voltager regulator?

I want to make my own BEC (battery elimination circuit) for my RC helicopter, so that I don't have to spend $50 and buy one. I'm also very impatient when it coming to waiting for things to arrive in the mail. I have some basic electronic parts.  I have some N-channel MOSFETs, Diodes, Resistors, OP-amps, and comparators, A butt load of Capacitors, My helicopters ESC(electronic speed controller) uses a 11.1v Lithium Polymer(LiPo) battery, but my RC receiver can only handle 6volts Maximum, at about 2-3Amps. I don't have any wheels, so I can't exactly run out to my nearest RadioShack to buy an LM317 voltage regulator. so I'm here to ask if anyone knokw how to build a [step dowm voltage regulator] from basic components? Schematics ,and parts list would be appreciated. I have no idea how much current the LiPo battery is pushing, it exceeds the max range of my Multimeter which is 10Amps. fried couple of diodes, and blew the fuses it trying to measure the raw current. I need help please.

Question by alien200049655    |  last reply

Step Down Voltage converter for my AV receiver bought in US to work in India?

Please advise? Planning to use a Step Down Voltage converter for my AV receiver bought in US to work in India.Need 240V/50Hz to be converted to 110V/60 Hz. Also the AV Receiver works on 480w, read that the Watts needs to have at-least 3 times of the AV receiver. Will the Frequency change?

Question by sivan0925    |  last reply

What would be the most efficient method to take a 120VAC output and step it down to 5VDC or less?

 I am trying to get a sensor to close a switch, but the output off the sensor is 120V AC, and that would blow my switch.  Upgrading the switch is not an option, so I need to step down the volts (and most likely amps) to an acceptable voltage.  I'm thinking a concept similar to a plug in wall transformer. Any ideas?

Question by spacecase544    |  last reply

Is it possible, to supply power to dc motor using a rectified step down 220v to 110v transformer?

Hello experts, I need your help please. I have an old Dremel hobby drill. It was rated for 110v but accidentally plugged to 220v mains and blew-up its built-in rectifier and varible speed control. The motor still works. I tried it with 12v dc power supply but it rotates very slowly. If it is possible at all, how can I power it using a rectified step down 220v to 110v transformer. Thanks.?

Question by felixdjac    |  last reply

How many steps are too many? Having trouble toning down my picture count.

I don't want to start up another "I'm not a fan of the picture layout" thread. That's why I posted this here, not in another section of the forums since my instructibles are crafty or arty and those are the types that tend to have more pictures, from what I've seen. Instead I'm trying to work within the system. Motivated to get back into it by some of the interest I've received  still getting subscribers, which warms my wittle heart. To that end, my praying mantis is finished, just need to photograph the final result. The instructions were all written just before the site switched over the picture layout though, and the process seems to require lots of pictures, I can't seem to remove enough pictures from the 'ible to make it fit with a few steps with only a few pictures in each. Wondering what peoples opinions are on the length and depth of instruction in an instructible are? Wondering if you'd rather 10 to 15 pictures in one step, with a couple paragraphs of instructions below that you'd have to scroll up and down repeatedly for, going in and out of pictures to see the picture tags so you understand what is being written, etc...OR...would you prefer to go through 3 to 5 times the number of steps with only a couple pics per page, with a single paragraph of text instructions BUT where you'd have to go through multiple steps (multiple pages) to see how a fairly simple part of the process is done? I figure I'd need to reduce the number of pictures posted in each step. Because looking at my wire octopus 'ible, it's a really hard read these days. My thoughts are 3 to 6 pictures per step, max. That leaves me with what will end up as a 30+ step 'ible for my current praying mantis 'ible. So... I'm tempted to just post up a few work in progress shots with a decent text explanation and leave it to the reader to picture the majority of it in their minds.

Topic by Thrasym    |  last reply

When making instructables, if you have more than 10 steps what happens to the remaining steps?

 I just published an instructable which had 11 steps.  The 11 show at the top, but when looking at the steps down the page, only 10 show.  Did i do something wrong? is there a limit? or is there just something up and I don't understand what it is?  Thanks!

Question by barefootbohemian    |  last reply

Intro and Step #1 on same page = weird?

I guess this isn't a bug, as it works as planned, but I do find it personally annoying that the Intro and Step 1 are on the same page, but there are separate thumbnails at the top for the respective sections.   When you click on the step 1 thumbnail, it just jumps down. I like clicking through the thumbnails as a way to see the overview of the project, and I always have to skip that step #1 box. I would personally put the intro + materials on the first page, then the start of the procedure (Step 1) on the next etc.  I don't consider the materials to be a "step".  Maybe it's just my OCD acting up.  Anyone else?

Topic by majomomo    |  last reply

Making Solar USB charger- 5.6V too much for an X-Y:5V step up?

The estimated max my (DIY) panel would have put out was 5.0V, but It's 5.65 in the brightest sun nearly exactly 90° So I wonder is 5.65 outside the input limit for a typical "_ to 5V" step up usb connection? I have learned that if I had a really wide voltage that I would a boost-buck converter to step it up or down depending on the input. I just don't know if I need that here. What happens if you over-volt a step up?

Question by Phoenix17  

Help with a voltage regulator for a DIY bench psu

Hello i have an atx that i would convert into a diy bench power supply but i just realize that it was just 12v and my thing work need more voltage range so i decided to use an old, but still working, Hp 30v ps. so i was looking for a way to regulated it easy, i found the lm2596 and i dont know if it would endure or use lineal regulator such the lm317. so, i need help for any inexpensive alternative or any schematics, or whatever let me step up/down the voltage. Thanks.

Topic by mario.negretemunoz    |  last reply

When using a step-down transformer (120vac-18vdc), will I need to limit the current going to the motor?

Attempting to modify an old rechargeable battery for power tools into a power source that can be plugged into the wall and inserted into the power tool. I know that step down transformers raise the current, but I am unsure if this will be an issue. Either way... What is the best way to reduce current while not reducing voltage? Is that possible?

Question by gmecomber    |  last reply

what resistors do i need to step a 12V battery down to 3.25V to run a LED light?

I have a 12v battery that runs my fishfinder on my kayak.  I am making a LED 360 light and want to use the same power source so I don't have to keep using AA or rechargables.  I need to know how to step down the battery.  I no longer have my electronics books to look it up.

Question by lpn_1993    |  last reply

I Am building a DC to DC step-down variable voltage power module and have a questions.

The power module or desktop PSU is fairly basic but I have a mini 3 wired power meter to use the meter I need to power it and to do soI have to follow these instructions. "Simply connect the red wire to a positive power supply from 4.5 to 28VDC, and brown or black to the common ground to power the display. Finally, connect the orange or white wire to whatever you want to measure the voltage of." This is a link to the actual power meter. What I am not sure of is how to figure out what the common ground is and where to attach the green wire I am sure I can figure that out once it's powered so if anyone can tell me how to find this common ground that would be awesome thanks in advance for your time

Question by plesperance    |  last reply

I am looking for a 220v/50Hz to 110v/60hz step down transformer - any help please? Answered

I want to purchase a computerized sewing machine for my wife from the US, however this machine is VERY sensitive, and manufacturer does not recommend running it on different voltage than 110v. I have checked with them, and the required input for it is:2.4  wattage. The amp is .02 and the voltage 120. I have not managed to find a reasonably priced step down transformer which can also transform the frequency - only one, but it costs a few thousands of dollars :)Please, help! This machine is not sold here, not in Europe, not even similar model. One answer I've got from a company specializing in such reliable converters: Since your sewing machine is computerized and very sensitive we do not feel confident that it will work properly with a voltage converter because of the cycle or hertz difference.  Here it is 60 hz and Israel it is 50hz and converters do not change the cycles. your sewing machine may be adversely effected. The machine I am talking about is this: Thanks!

Question by Carmageddon    |  last reply


Dear Experts,This is my circuit diagram,I am Using1. SELF-OSCILLATING HALF-BRIDGE DRIVER ( IR2153 )2. MOSFET ( 47N60C3)I have a problem is the circuit sir,it works better with 10 Ohm resistive load but when I connect an inductive coil (which has very less resistance and homemade using coils) and a free-wheeling diode across it, I am facing a problemProblem: Power supply is in constant current mode at most of the time and 5A and 8V drop which is the max that I can achieve my power supply is 30V, 5 Amp power supplyRequirement: 12V-15V drop at 1-3Ampswhat could be the necessary arrangements to achievewhat are the possible ways to achieve this?

Topic by m.a.dasunumayanga    |  last reply

need simple innovative answer for conveying someone in standing position up and down 12 steps, 3ft wide.?

Live in 1st floor flat. partner housebound. cant use communal stairs. spine problem. stairlift not allowed due to h/s regulations for other residents. amove to ground floor offered but too much for her to move. evacuation chairs tried but jolting and sitting position terrible.device cant be a fixture.something put in place when used. thought of a motorized step raiser that goes up to height of next step and you then step on another flat raiser which goes up, and i bring the other one in front for the next step and so on. was told would cost a fortune. motorized car jacks take 2 mins to elevate - no good. housebound for a year. desparate situation. any helpful ideas like amotorized step device that goes down and up, would be a lifesaver and greatly appreciated. thanks.

Question    |  last reply

how do you calculate the ohm value of a resistor needed to step down the 6 volts to 3 volts?

I have a 6 volt electric car that i want to use with 3 volt moters and want a simple way to do it said motors will not  tolerate 6 volts 

Question by saberwing    |  last reply

Taskings S PAB Revolution 2012 [The new step]

This is the year before 2012. Now don't think about AHHH we are going to DIE! No WE ARE NOT GOING TO DIE! So calm down, it is not the end. It is for you the chance to step up and act. Why? Because I am tired of wasted users for just joining and THAT IT. So just make a Paper Airplane instructables or a forums and that what im saying, oh and show it to the damn group or your sacked [That includes old members too.]  Answering won't stop you being sacked so just make a forums the easiest. There is another thing why. Because they don't rank up. So they just do random stuff instead. Yeah seriously. And it is the time that you need to get ready for the ANOTHER NEXT YEAR. So just give me info ideas. Thanks for reading it. wat.  

Topic by wat.    |  last reply

Can't reorder steps and pictures and can't move text boxes

Hello! Ever since the instructables went down a few days ago, I can't use any of the drag features. I can't reorder steps or pictures, and I can't move the little text box captions for photos. I've tried in several different browers, and I've deleted website data, cookies, and other stuff like that. Is this a website problem or something I can fix? Thanks

Topic by HavocRC    |  last reply

Can anyone tell me step by step instruction on how to convert an old phonograph tube amp to a guitar amp.

Can anyone tell me step by step instruction on how to convert an old phonograph tube amp to a guitar amp. It has a 6bq5 power tube 6X4 rectifier tube, and a 12aX7 pre tube. Can anybody please tell me how to do this. You would be so appreciated. I have soldering skills, but not too much electrical knowledge. I know what resisters are, I know what transformers are, I know what capacitors are, and I know the very basics of their functions, but I can't understand how to tear it down and make it a good guitar amp. I want to remove the feedback circuit so that it will distort naturally. I would also like to modify the equalization and tone to better suit guitar amp. Please help. You would make me so happy. I cant afford to buy a good tube amp, and this is my only hope of making a great sounding amp. Thanks so much. Please be as detailed as posible in these step by step directions. You are awesome if you can help me.? Thanks The amp is from a 1959 Newcomb model R124V phonograph with an inboard 6"X9" speaker. It works perfectly with no crackling knobs or nothing like that. The amp is super clean and well cared for The tubes inside are 6BQ5 FROM AMPEREX BUGLE BOY. The rectifier tube is 6X4 from sylvania, made in USA. The 12AX7 is made in Britain, but I can't see a name on it. I have many spare 12ax7's lying around though. Thanks so much in advance.

Question by meman-mark    |  last reply

GreaseMonkey Script for Instructables - Auto-All Steps - Download it Now!

I whipped this up, still needs work, but it works (sorta)...You can download it hereNow, on the Explore pages, it will automatically take you to All Steps instead of the Intro step when you click on a link.I'm considering this open-source, so PLEASE post modifications, again I literally spent 2 minutes on this - including debug/testing time.I know you are saying "duh its open source, its a script! moron" But what I mean is that I am encouraging modifications.Code below if my server is down // ==UserScript==// @name Instructables "All Steps" Fixer// @namespace*// @description Automatically loads All Steps instead of the Intro only// @include*// ==/UserScript==//Made by Zachninme//Although this is open-source, always leave the above line intact. Thanks.var allLinks, thisLink;allLinks = document.evaluate( &apos;//a[@href]&apos;, document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);for (var i = 0; i < allLinks.snapshotLength; i++) { thisLink = allLinks.snapshotItem(i); if (thisLink.href.match(/\?/i)) { } else { thisLink.href += &apos;?ALLSTEPS&apos;; }}(I have registered, but it isn't working right... *sigh*)

Topic by zachninme    |  last reply

Which electronic component to use to step down voltage from 7.4v lipo battery to varying output voltage between 3v - 6v?

Hi all, I dont have much knowledge of electronic components and I am trying to make a robot. I have servos with operating voltage of 6v and I will be connecting it with a battery. I am not able to figure it out which electronic component should I use to step down the voltage from 7.4v lipo battery to have varying output between 3v-6v with maximum output current of 2amp. Thank you in advance for your advice :) 

Question by PiyushJ15    |  last reply

How do I design a Step Down Switching Circuit from a 12V 3A lead acid battery to a 5V 1A Load?

I am designing a solar panel charger for usb devices, I have a 12V 3A lead acid battery and I want that reduced to 5V 1A to comply with most portable devices, Help is much appreciated and diagrams would be ideal

Question by EmptyCoffin92    |  last reply

I need to step down 12V to 3.2V to power 512 LED's in a parallel circuit, 256 in each. How can I do this?

My power source has 12V, 6A. Each LED draws 10-20ma and is powered on 3.2 V. Ive tried looking up how to do this already but havent really found anything like what im trying to do. The LED's will not all be on at the same time, im building an LED cube that pulses to music.

Question by rbeck_v    |  last reply