Higher Amperage

Hello guys, i need help with one of my projects.I have make an DIY Keyboard with neopixel at any button,it works perfect but i have problem with power. i have 2 usb from keyboard one for arduino and one for keyboard.if i load #define BRIGHTNESS         20  all is good but if i load #define BRIGHTNESS         80 the usb connection is lost and arduino start to lag.this is amperage problem and the question is if any1 know how i can take that usb output from pc and make it with circuit to higher amperage.

Topic by NetariaT   |  last reply


Overloading amperage? Answered

If I have a device that is rated at max 17 amps and 31.5 volts (but capable of operating at any lower amperage or voltage) and I want to run it off a 12v 7amp circuit, will that overload my circuit? Do I need to put a resistor in to limit the load? What if I need to bring the amperage down to 3.47 amps off the 7 amp circuit... do I need to put in a resistor then, or will my power supply just automatically supply only what it can?

Question by eblingdp   |  last reply


Lowering Amperage

I am building a charging circuit that needs a 17mA current but my 12v transformer has an output current rating of 500mA how can I bring it down?

Question by cinnonym   |  last reply


Controlling Amperage

Hiyas, I was wondering if you could point me in the right direction. I was wanting to build or buy something I could control Amp input. The system would be 12 -14 v dc and I want to be able to limit the input to say... 25 - 30 amps. So if a system would naturally draw more amps I want to be able to control the system be limiting the amp input...if that is making any sense. Got any thoughts ??? tks Huchleberry

Topic by huchleberry 


Control Amperage

Hiyas, I was wondering if you could point me in the right direction. I was wanting to build or buy something I could control Amp input. The system would be 12 -14 v dc and I want to be able to limit the input to say... 25 - 30 amps. So if a system would naturally draw more amps I want to be able to control the system be limiting the amp input...if that is making any sense. Got any thoughts ??? tks Huchleberry

Topic by huchleberry   |  last reply


Component Amperage Rating

Hi! I was browsing through an electronics retailer website looking for components to buy (particularly a LED) and i was wondering what the amperage rating of each component meant Does it mean: 1. the current flow across this component shouldn't be more than the amperage rating as it will cause damage? 2. or the current flow across this component should be equal to this amperage rating? please help me I'm really confused :(

Topic by La Tour Rouge   |  last reply


Calculating amperage and wattage?

So I'm doing an energy inventory on our house to see how much electricity we use, and maybe see if we could cut down on some costs.  Being Christmas right now, we have a long multi-string chain of lights going across our living room. I'd say it's about 50 feet long. They are just regular incandescent lights. typical normal size, no LEDs or flashers or anything. When you plug them in, they come on, and that's all they do. I wanted to figure out their wattage, so I started with finding the amperage. My multimeter isn't very good when it comes to measuring amps, so I decided to use a roundabout method by finding the resistance of the circuit. The resistance came out to be 13.3 ohms. Plug that into ohm's law and you get around 9 amps of current and therefor, about 1080 watts of electricity. That sounded right to me...after all, it is a long string of lights, and even though they don't individually suck up a lot, I figured it adds up.  I tried this same method with a single bulb that I knew to be around 300 watts. The resistance came out to be about 4.5 ohms giving a whopping 26.7 amps with a wattage of around 3200 watts! That can't be right. I want to know what I'm doing wrong. I'm pretty sure it can't be my multimeter because I just bought it brand new about a month ago. What am I doing wrong?

Question by tylervitale   |  last reply


How to increase amperage of a 5volt's current?

Hello, I want to make a circuit which increases the amperage of a 5 volts coming out of a battery the voltage may decrease but the ampearage should be high or increased! Thank's for helping Samad Haque

Question by ubdussamad   |  last reply


Is it possible to apply too much current to devices? Answered

Again, another silly question. A lot of my projects are going to need batteries (as they will be used in props). I have a decent understanding of how electricity works and all that, as I have done quite a few things with it from the ground up (that is, I didn't copy a pre-existing set of plans). But with all the stuff I'm planning to do, I'm having issues keeping up with it all, mainly due to the fact that I am a tad unsure on amperage draw and amperage supply.  For the sake of understanding for myself, lets say I try and run an arduino nano using a battery pack that spits out 12v/2a. Will the arduino only take what it needs, or will it try and take all of what it is given and 'burn' up. Alterativly, if I were to use a 5v/1a peltier element, will it also only pull what it needs, or will it burn up? I would assume the peltier would just burn, as it has no way to limit what it's pulling, while the arduino will regulate what it's getting.  Thanks in advance! 

Question by DoctorWoo   |  last reply


Really basic Resistance / Amperage question:

Before I begin: yes, I should know this already, but I'm really sleep deprived right now, and therefore slightly muzzy on my electronics knowledge... My circuit has two loops running in parallel off one, limited, 18v power supply: [*] Loop 1 requires the majority of the supply's power to run [*] Loop 2 is simply a 7805 voltage regulator supplying 5v to an analog input on an Arduino, so needs almost no current running through it. [*] when Loop 1 and Loop 2 are both active, Loop 1 does not get enough power. if I place a resistor in Loop 2, in series with the 7805, will it increase the amperage to Loop 1? I think the answer is yes, but, once again, I'm MASSIVELY sleep deprived. any help is appreciated.

Topic by gschoppe   |  last reply


How i can regulate amperage? What electronic pieces i have to use?

I have a power source tha gives 24v and 10amps. How i can regulate the amperage to 1A even lowering the voltage? (ideal would be 12v and 1a, but i dont really care about voltage).  thank you for your help :)

Question by Peris The Majestic   |  last reply


Scientific Theory

I am working on a scientific theory and I need a little help. I have 2 car batteries in series to create 24v need to power an electric motor. The motor is 14.5 amps and I need a way to control the amperage from the car batteries to the motor. Any help would be greatly appreciated.

Topic by Ice Dragon   |  last reply


Dimmer Question about Amperage? Answered

I've searching for a dimmer that its flicker won't be visible. This dimmer is the one that I came up with It claims to be 3-35V, and 90W MAX, but also 5A MAX.  Does this mean that the maximum power that it can supply is either 5A or 90W? That means that for 3V it would be able to supply 15W (5A), and for 35V it would be able to supply 2.5A (90W). Am I correct? Is it the first one that reaches MAX the maximum? I'm going to use it for 12V. That means that I can use 5A max, right? Thank You!

Question by Yonatan24   |  last reply


Boost curcuit amperage issue? Answered

I am planning to make a small boost converter similar to mintyboost. I am using a boost IC that will give me about 92% efficiency with the voltage i have. The output is 5v at 500ma, and the input voltage is 2.4v. Would the ic suck up more than 500ma per hour from the batterys?

Question by astroboy907   |  last reply


AC Adapter - wrong amperage?

My dvd player's ac adapter died, and while your forum on opening it up to fix it was great, it is not a simple short that can be soldered. This is a basic electronics 101 question. The old adapter put out 9v 2.2 a. I have an adapter that puts out 9v 3.0a that fits. Will I fry the dvd player by trying it out? or will it only take what it needs? Thanks for your advice. JB

Topic by jaybesq   |  last reply


Determining the amperage output of transformers?

I have two giant audio transformers that put out about 70 volts each. I want to determine what the maximum amount of current they can supply is, because they're really nice transformers, and I wouldn't want to break them by over-heating them. Is there any way to do this mathmatically? I have a multimeter that can measure ohms and voltage, but it can't measure watts, and the fuses for the ammeter are blown, and I can't replace them right now. Bear in mind that this is about as much as I know about the transformers, other than they're heavy, and that primaries are 120 volts each.

Question by tylervitale 



Changing DC voltage and amperage?

I've been looking into HHO units and the most efficient voltage is 1.5 VDC but the units pull 30 Amps.  All the converters and modules seem wasteful while I feel there is a direct way to create this supply with minimal loss from battery supply.  Resistors seem to be the most efficient but what resistor can turn 12V into 1.5V while delivering 30 Amps without burning something out.  I'm contemplating a bank of resistors all on separate leads and tied together in a parallel combination so the 30 Amps are split along many lower amp rated resistors.  I just don't know enough about DC conversion to know if amps will become volts or just get lost to heat dissipation.  An HHO unit relies on the highest efficiency current supply to perform correctly and save my gas.  The units are out there but not this fine tuned system I want to build because 1.5V at a 30 A draw from a 12V car battery is hard to do without wasting the gas in just converting the ideal power supply.  I've heard talk of using diodes as well.  Is a diode or resistor setup more efficient than a PWM?  Could I combine diodes and resistors for better efficiency?  I've been searching the web for info but it just confused me more as nothing I've read comes anywhere close to what I'm trying to do.  Those I've read about that try to build the most efficient power supply end up burning up their components by pushing them too hard while instructing others to do the same.  There has to be an efficient way to create that ideal supply current without much loss.  Could it be run straight off my alternator since it produces AC before the voltage regulator converts it to DC or would a second regulator just waste more current than resistors and diodes from the 12V battery?  Any advice or info would be greatly appreciated.    

Question by bmac30   |  last reply



What is the best way? Answered

I got a transformer with the next schematic and I want to build a power supply with max 30v and high amperage. Can you help me with some scematics?

Question by theVader75   |  last reply


Some sort of microcontroller to regulate accessory power usage in a car?

 So as most of you know, I'm working on making a hydroxy booster for my car. That's not too hard. I'd like to build some sort of microcontroller-device-thingy that would regulate how much amperage the generator draws, based on the load required by the car, so as not to draw too much. Is this something for adruino or..? I'm kind of clueless on this one so.... PLZ HELP!! I'm fairly unaccomplished in programing, but I could learn something if it's simple enough.

Topic by KentsOkay   |  last reply


What difference does amperage make in a notebook charger? Answered

While shopping for a new notebook charger for my son's computer I discovered that the new replacement charger produces 19 volts and 3.95 amps. The original charger is 19 volts and 2.65 amps. Should I be cautious of the new charger?

Question by blkhawk   |  last reply


Minimum voltage/amperage required for peltier cooler?

I want to connect a couple of computer fans and a peltier cooler to some solar cells, but I want to keep the amount of electronics to a minimum (for the sake of KISS). Assuming the fans and peltier are rated to run at 12V, and I connect the solar cells to provide 12V at peak, will I be able to leave it connected all the time, i.e. when it's night time there is no electricity being provided, maybe in the late morning there is half the electricity, and in the afternoon sun full power? I guess a simpler way to phrase my question is: Can these devices be run with much lower voltage or amperage than they are rated for?

Topic by littleb28   |  last reply


LED burnout

I've been having trouble with LEDs. I'm running 18 blue ultrabright in parallel. The specs for volts and amperage are as follows: 3.6v typ 4.5v max 20ma typ 30ma max Each LED has a 220 ohm resistor which was calculated for a 9v source with each LED at 4v, 25ma. This seems well within their range. But, in about a year and a half's time, I've had about 25% burnout. Most of the others are showing signs of intensity and spectrum degradation. Any thoughts as to the cause of this?

Topic by hexedene   |  last reply



is 2A=200mA?

I have a a wall plug to dc power supply that outputs 12V/2A , I also have a security camera that's input is 12V/200mA. is it safe to use these together?

Question by 16_hope_dylan   |  last reply


Help needed desperately ! (Question related to batteries) Answered

Hi Guys,              Recently I planned on making an portable phone charger the classical way, with a car phone charger. But then I came across the problem of choosing a battery. The 8 AA batteries way is not economical, as I will be charging a Sony Xperia Z1 and it will drain the batteries in one charge. The 8 AA rechargable battery method will be better but will set me back about $20 so that's a no. If I use a 9 volt battery it will charge the phone 20%. The final and the most stupidest method is to connect 10 9v batteries so that I get 9v 4 amps but that will be too bulky. Lithium batteries are useless as I will get the required amperage but the voltage will be too low and the other ones will once again set me back too much. So the only way is to use 8 AA batteries but every phone charge will cost me approx. $1. Is there any other cheap way or 8 AA batteries it is? Thanks in advance :).

Question by The Prickly Potato   |  last reply


Wiring Two Ports on a Phone Battery Bank in Parallel?

If a power bank claims that each port on it can charge a device at 2 amps, if I connect both ports together in parallel, am I able to get 4 amps? Or would it be just like trying to double the voltage off of the same battery, and not work? I have an Intel Compute Stick, which requires 3 amps to run. However, battery banks that provide more than 2.1 amps per port are super rare. Would it work to wire them in parallel?

Question by RocketPenguin   |  last reply


PCB Trace Width Questions

Hello instructioners, So i am working on a PCB to use my XBOX 360 power supply as a standard 12volt 16 amp without hacking it apart. I've taken the female plug from a dead Xbox and I've recreated the layout in ExpressPCB. my only issue is being that its 16 amps @ 12volts is the trace widths to hold that much power are ridiculously wide we are talking 7mm or there abouts. I used several different online calculators to determine trace width.  My question is..  how small can i get away with for traces and still get 16amps.. is there a way of bridging the front and back side of a 2side PCB to allow for more amperage on smaller traces? i am really at a loss here. since my PCB is set at 38mm by 38mm and the connector size is 27mm long by 23mm wide. with 7mm wide traces i can't connect all the power pins together and all the ground pins together and route them out. Now i realize the 16amps is max draw but i'd like to plan for a max draw situation that way i feel confident enough to not have to check it all the time to make sure its not melting. Below is an image of the current board in Express PCB the labeled Thru-hole are connections i will need to make for this all to work. the other remaining holes are for mounting the female jack securely. The three yellow boxed connections are 12v+ The three greyed boxed connections are gnd ENG is bridged to +5 to make the XBOX PSU provide 12v

Topic by jgosselin   |  last reply


Making a universal USB charging port? Is it possible to reduce a DC current's AMPs without affecting its voltage? Answered

After cleaning my drawer i've noticed that alot of my chargers these days are using a usb port to charge their device, so i came with an idea to create a universal port that will charge all my devices so i got to thinking First i would buy a AC/DC power plug(I live in Australia) to reduce the current to 5V @ 2.5Amps, Link : http://bit.ly/L89ez5 I was planning to strip the end port so i'd have a positive and negative wire, which would eventually lead to the + and - power wires on a female USB port. However i came to 2 problems with this. 1. Power Amperage/Voltage Since it supplys 2.5Amps i found out this would be too much for some of my devices, after researching on the internet(Correct me if i'm wrong) I'm led to believe that with the way DC currents work, devices will only draw the amount needed, however my concern is that some devices sometimes make use of the extra amps and allow themselves to charge faster at the expense of a shorter battery life. To combat this i thought up of using a rotary switch linked with different amounts of resistors to allow me to select how many amps the port will give. However my first problem is that after more researching that i can't simply use normal resistors to reduce the amps without affecting the Voltage. My aim amps choices are: 500mA(iTouch 4g) 1000mA(Mobile Wifi device) 1500mA(Playstation Vita) 2000mA(Just in case) 2100mA(iPad 2) How would i achieve this? what resistors would i need to buy/how many? I read something about some forumla but couldn't find what exactly it is. 2. The Data Pins During my research i found out my PSVita is picky with its USB Port choice, its one of many few devices that like to be charged using a dummy port, In which i found out a Dummy port has the Data pins shorted, if they arn't shorted then the device will refuse to charge from the port. At first i thought it would be simple, i'd just have a switch that would short pins when i needed it. But then i realized what about my normal devices? What would i have to put between the the data pins to allow normal devices to charge normally. Any and all advice would be appreciated. This is what i had planned: (MS Paint!)

Question by ultimatenoob   |  last reply


What are the voltage and amperage of a transformer that will be used to build a welder? Answered

In order to build a welder using 120 volts of AC, what should be the voltage and amperage rating of the transformer? 

Question by blkhawk   |  last reply


Do Amperage Ratings Add in Parallel or Series? Answered

I was wondering if the amperage ratings of devices, say, for instance, circuit breakers, add in parallel or series. For example, if I hooked up 5 20 Amp circuit breakers in parallel, would it take 100 amps to trigger them all? Or would it take 100 amps with them in series to trip them all? I'm not sure about this because I have used two 1 amp solid state relays in series to switch loads well above 1 amp, but it seems more logical for them to only do that if they were connected in parallel. Also, whatever the answer to my question is, does it apply to all devices? Circuit breakers, Triacs, etc? Thanks!

Question by mad magoo   |  last reply



How do Transistors handle Amperage?

Hey, I'm working on a wireless power transfer system and I'm planning on running it on 12vdc with a 2n3904 transistor, but my power supply supplies 2 amps. Now the question is, will the transistor draw only the current that my transmitter coils draw, or will it simply draw it all for supplying the coils. I have not yet determined how many turns or what resistance they have yet, I'm still in early stages. I just don't want to ruin one of my few transistors. I know the absolute maximum current this specific transistor can handle is 200ma.

Topic by DecemberRain01   |  last reply


do ammeters that have an independent power supply require a specific voltage to work?

Hello, for a DIY project i plan on taking on soon, i need to measure amperage, and i have been looking for a digital ammeter, as the analogue one shave been to bulky to use. i need to know, if this ammeter will be able to read amperage at 3v-5v http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item;=120686900155&ssPageName;=ADME:X:eRTM:AU:1123 it says it needs 6v -15v input, but this is just to power it, and isnt what is being measured. i need to know, do ammeters need a current with perticular voltage to properly measure the amperage? ive seen others that operate on 0-30vdc, and others that must have 12v or 24v, and the rest dont say at all how they work.

Question by oldmanbeefjerky   |  last reply


Low voltage, high amperage transformer?

Hi! I would like to make, buy, or find, a low voltage high amperage transformer to power an electrolosis cell. I like playing with the hydrogen-oxygen gas produced. From what I have read, I only need about 1.8 volts for electrolosis, so I'd like a circuit or transformer that could take the power from preferable a 9 volt battery and convert it to 1.8v at as high an amperage as I can get. Thanks : )

Question by fozzy13   |  last reply


current multiplieror amperage booster circuit?

Hey anyone know a circuit that can increase current i want 7 apms current from a 9v battery if anyone know how to pls explain briefly with circuit thank in advance

Question by mihir.sahu.355   |  last reply


Switch/Relay Question? Answered

I've been working alot with capacitors recently at a voltage of 330v or so. I've been using this cap bank to discharge into whatever I feel like. Wires (to watch them pop), cds (to "erase" them), etc. Anyway, one problem I've been having is the switches. I flip the switch, it discharges the capacitors and it should work fine. The only problem is the switches are only worth one shot. And I'm using the biggest I can find. (Rated for 15 Amps). I realize that the capacitors are discharging instantly, and the amperage is probably higher then what its rated for, but I expected to get more then one shot out of it. Any suggestions besides a bigger switch? (I've considered using a series of relays for each capacitor, but that gets expensive.) Thanks!

Question by transistorguy   |  last reply


transformer design... Answered

Designing a transformer, currently i have a 250mm by 250mm window for wire and interchangeable coils, some only a few turns, but will leakage flux cause large power loss?, or will it just limmit current, i read some stuff and im not really sure, i mean i don't want to start building it if it won't work

Question by pwnag3   |  last reply


Hi, Can anyone tell me how to wire up a simple AMP meter (220 volt) so that I can test the AMP's? of an appliance?

I have built a little power board which consists of a double plug adapter which plugs into a mains supply in the house, I then want to be able to plug in an appliance, say a fridge and see how many amps it draws - I want to be able to make this all fit into a briefcase so that it is portable - I can do all of that but just need to know how to put an AMP meter in between the power supply and the double plug where I will plug the appliance in. I realize I could do this with a clamp meter (which I have) but I have a specific reason to do this without a clamp meter

Question by enerwise   |  last reply



Finding the wattage rating of resistors and variable resistors? Answered

Is there a way to find the wattage rating of resistors and such mathematically? or is it something that has to be tested in real life? I have quite a few resistors that I'd like to use, but don't know the wattage rating of them. I only know their resistance, and I could calculate other values if I put voltage across them with a multimeter.  Also, what type of variable resistor would you recommend to control a 12 VDC device that draws 12 amps?

Question by tylervitale   |  last reply


LEDs - Under-volt, over-amped?

My issue: Have multiple LED drivers, (high power LED instructable) and connected the wrong one. The LEDs are not dead. My LEDs are rated at 9-12v, 950mA and I have sets of 4 in series hooked up to a 36v power supply. The driver I used has a .3ohm resistor on it. so it's putting out ~1.3A The LEDs should have burned up. Since the driver eats up a little of the voltage, each LED is getting ~8.75v. Is this why they haven't burned up? Thanks!!

Topic by thestip   |  last reply


Current and voltage ratings in dc plugs and wires? Answered

I had this great idea to turn old cell phone chargers into DC extension cords.  Cell phone wires are nice because of their curly spring wires.    I worried the wire gauge might not be large enough to handle my project.  Here is my question.  On websites that list current ratings for standard wire gauges, they list current limits but not voltage limits. Why is this?  If a 22 gauge wire can handle .92 amps does it really not make a difference whether it is 1 volts or a million volts?  Why don't they use watts to list how much power a wire can handle.  Watts take both volts and amps into account. Another mystery is that my DC plugs are rated for 6-10 volts.  Why are the plugs rated for volts but not amps?  What would happen if I used these plugs for 4 volts, which I plan to do.   Thanks -Jacob

Question by Noblenutria   |  last reply


will putting five volt regulators in parallel reduce the strain on them?

I'm using a peltier plate and some CPU fans to make a micro fridge for my car. for testing purposes, I'm going to need a pretty beefy power supply. because the plate draws four watts at twelve volts, I need a supply that can push out around three and a half to four amps. however, I don't want to go out and buy something, because I have a very limited amount of money. what I do have, however, is a large amount of leftover twelve volt regulators from an earlier project, rated to work with up to one amp. will connecting several of these in parallel (maybe five of them, just to be sure) be enough to reduce a thirteen and a half volt power supply with 3.9 amps of current to twelve volts? this is the closest I can get to a twelve volt supply with the materials I have, and I already have a heatsink for the regulators (I tore apart a dead computer power supply).

Question by codongolev   |  last reply


What amperage will I get from these capacitors?

Alright I am finally getting around to making a coil gun, I made a measly bank of 30 330v 100uf capacitors, totaling 3k uf. However, I just took apart a big ass power supply for battery banks, now I have two coke-can sized 250 volt capacitors, each rated 4400 uf, and I am going to hook them up in parallel, making it an 8200uf capacitor bank, to charge with camera flash circuits in parallel as well. Thing is, I need to find a relay that won't blow up from this, so what kind of amperage will I be getting sending this through a coil?

Question by XOIIO   |  last reply


What's the amperage rating of the K'Nex electric motor? Answered

I recently purchased a small lot of K'Nex parts to add to my collection. Included in the lot was the 12-volt K'Nex electric motor that you plug into a wall outlet. Unfortunately, the lot did not include the box/documentation for the motor, and more importantly, it did not include the AC adapter required to run the motor. I have a big box of AC adapters from various electronics collected over the years, so I likely have one that is a suitable replacement. However, I can't seem to find out what the amp draw is for the motor. I've looked elsewhere on the web but have not been able to find this information. So I was wondering if someone who actually has the original AC adapter for the motor can look at it and give me it's specifications and perhaps a model number? Thanks!

Question by thekosmicfool   |  last reply


Does a lithium polymer battery have too much amperage for a 555 timer? Answered

I'm using a 555 timer for a robot, and i was wondering, is a lithium polymer battery too much amperage for the 555 timer? because when i use it, the 555 timer warms up, to a point where i cannot touch it without getting burned instantly. If so, how can i reduce the amperage, so that it can be used with the 555 timer? I'm using a 7.4 volt, 1000mAh battery, it was originally used for a helicopter, but i re purposed it for my robot...

Question by Chowmix12   |  last reply


Why doesn't my windmill generator seem to charge the batteries?

Hi there, I figured Id post here because I have no one to ask and answers aren't obvious from googling. The connection is as follows: - (0 Volts to 40 Volts open voltage) Windmill to a 12 Volt Battery. - (0 Volts to 20 Volts open voltage) Solar Panel to a 12 Volt Battery. A solar panel has an open voltage @ 19.95 Vdc and delivering 0 amps.  The panel is not connected.   Then I connect the panel to the 12 Volt Battery.  Now, the solar panel now shows a voltage of 14 V and delivering 2 amps into the battery. That makes sense to me.  When connecting the solar panel to the battery, the system is now "on load", so the voltage drops.  But because the voltage drops, the amperage is being sent into the battery. ---- Now,  The windmill has an open voltage between 0 and 40 vdc.  On average it shows 20 volts when spinning. 40 volts when its faster.  Its known that it takes 14.1 volts to start charging a battery.   So, now lets assume the windmill is spinning @ 40 volts open voltage.   I connect the windmill to the battery.  For under a second, I see amperage go from the windmill to the battery.   The amperage amount is 3 amps for 1/4 a second, 0.6 2/4 of a second, then eventually 0. The voltage after connecting the windmill to the battery is the same as the battery voltage.  In my eyes, its not charging the battery, because amperage dropped to 0. As a side note, as soon as I connect the windmill to the battery, the generator/turbine, also slows down in speed.   I am also curious to know why it is slowing down as well.   Anyone have any ideas? - U

Question by useful1   |  last reply


what exactly controls volume in a circuit? amperage, voltage, what?

I see all these altoids amp circuits, and i want to build a small amp circuit into my backpack, but i just wanna know, what the hell is actually being raised? amperage going up? voltage going up? ohms going down? im confused!

Question by IncrediblyCondensedBlackMatter   |  last reply