Overheating mc34063 as boost converter Answered

I've been using the mc34063 in boost converter manner to build an external battery circuit for 3.7v->5v DC-DC conversion, but within few minutes of operation the chip and the inductor begin to overheat beyond touchable (light smell of burning components too), occurring with both circuits that I had. I've tested using the following devices: ipod touch 2G, ipod touch 5G, kross g6 tablet, all of which had the circuit overheat. The power source is 4 cylindrical cells in parallel @ 3.8v ~9A with protection circuit. The batteries do not overheat and I'm guessing the protection circuit regulates the current to an extent. I've tested the current draw of the ipod 5G to 100mA while the circuit is wired for 500mA. This is what the schematic looks like: http://www.eeworld.com.cn/uploadfile/dygl//201210/20121025102243965.png I would like some help in troubleshooting the overheating of the circuit, Thank you.

Question by Ahyku   |  last reply


7.4v to 10.2v step-up converter?

I need to convert 7.4v to 10.2v. I have a Li-ion battery pack that outputs 3700 mAh, and a (revision c) gamecube that requires a minimum of 10.2v to function. I would like to power the gamecube using this battery pack, and avoid having to buy more cells and a new protection circut. Can anyone help me make this step-up converter? (Preferably using a TI converter). Thanks!

Question by ryguy425425   |  last reply


stepping up 12V powerbanks to 30V DC

I bought some RC Lipo battery packs to power a speaker system but since then i've moved and my new landlords have thrown a fit about me charging them on the premises because of the (small) potential fire risk so one possibility im considering is using a powerbank or 2 instead as they have no problem with those. my problem is that the amplifier requires 30V but most slim powerbanks put out a maximum of 12V so could i either safely step up to 30V from 12V or join 2 powerbanks to step up from 24V?

Question by ambientvoid   |  last reply


12v dc to 22v step up, how do i build it ?

Planning to build a guitar amp that runs off a battery, need to get 22v to the plate. can i build it to wire straight into the circuit? also where can i find a miniature output  transformer that can mix voltages and be suitable for audio use. i want to build a  0.2w tube amp running at 8ohms off 12v and low amps.

Question by iNeedGuitarAmp   |  last reply


Step up transformer?

 i need to step 90vac (ballasted) to 300v any help  or if 9-18vac 2a is easier 

Question by R.A.T.M   |  last reply


Can I power a monitor from 5 volts?

Even if I have to open it up can I run this on 5v using a buck converter or by modding the screen? The screen is a RCA DRC69702 that came with a dvd player and all I want to is power it freom a two port battery. one port will be hooked up to the monitor and one to the raspberry pi.

Question by nerd7473   |  last reply


USB 5v step up to 12v?

Is there any such thing as a device that will step up 5v from usb and convert it to something else like 12v? I say this because I have a solar usb charger that charges a 2600 mah battery and outputs 5 v at 800mah to usb. i wanted to step it up so it could be used for other things.

Question by XBLmonster   |  last reply


5v dc to 18v dc? (it can't be as hard as I am making it?)?

I need a step up transformer to go from my average bench power supply (5v dc) to 18v dc (the same I would get from 2 9v batteries). I have an associates in electronics but it's from 10 years ago and I can't make the information come back into my brain. Any help would be appreciated.

Question by Random Point   |  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 


5v to 12v step up

Hi, I am looking to power some led's by USB. Problem is that the led's are 12v. Here are some example led's: http://www.ebay.co.uk/itm/12V-SMD-1M-60-LED-STRIP-LIGHT-RED-HOME-AQUARIUM-CAR-/290571186666?pt=UK_HomeGarden_Lighting_Lamps_Lighting_SM&hash;=item43a76471ea#ht_3932wt_1396 Would something like this do what i want it to do?:http://www.suntekstore.co.uk/goods.php?id=14002311&utm;_source=gbuk  Also looking at the step up booster i have no idea where i would solder/connect wires to the device? Any help would be appreciated. ItzMar

Topic by ItzMar   |  last reply


Step-Up transformer HELP!!

I ripped apart one of those nice flashlight / black light things. You know, those florescent 6 inch black lights. Well, I was amazed to see it runs off 6V. Until i saw the transformer.Problem:I have NO idea how many volts. My 500V multimeter said O.L (overload) so way over 500VI'm not sure the connections after i .. Ripped it off. If i quickly rapid turn on the switch, it reads many voltage range off a 1.5V battery, but then goes to 0. Maybe hooked wrong?--My GUESSING hookup (4-Pin transformer Square metal frame, and coils in middle)Below!--The flashlight[url]http://www.selfdefenseproducts.com/spy_shop/images/bl2.jpg[/url]Any idea? :(

Topic by Killa-X   |  last reply


DIY step up switching regulator?

I have a 6v power supply from 4 D cells that I need to convert into 24v in order to drive a solenoid. Can somebody direct me to a switching regulator circuit that I could build? Alternatively, if someone knows of a semiconductor that I could obtain that would do this, that would be great. However, I have looked around quite a bit and have not found anything. Again, my request is for a 6Vin to 24Vout switching regulator circuit, with about 500mA - 1A output... Thanks!

Question by raykholo   |  last reply


Did I screw up my power converter?

My motorhome has a115v ac to 12v dc with a split transformer, the 2 outer leads went to press in diodes and the middle lead went to neg or pos.(cant remember witch)  it is 40amp converter. one of the diodes was bad and i was only getting 6 volts out so i replaced them both with 40 amp 600 volt ZENER diodes. Are the zener diodes the wrong type to use, all seemed good except my neg and pos polarity were reversed coming out of the power converter, I reversed the terminals at the hook up so polarity would be correct.  Could this discharge my battery when its not connected to 115v.                                                                                             Thank you, Duncan

Question by dsr.   |  last reply


How to use a transformer to step-up voltage

Hello! I was wondering how to use a transformer to step-up volage. I got one of those shocker fly swatters and took it apart, and saw that it used a couple of transistors, capacitors, and the main thing, the small 5-pin transformer. How does it work? How can I increase the voltage? 

Topic by HavocRC   |  last reply


Need help supplying more amps than my arduino can. Answered

I am working on my first project that applies arduino to the real world and needed to know how to  supply more current than the arduino can output to several components. There will be 4-6 of these components, each one needing 5V at 0.6 Amps. I need to know whether or not I should use a step up regulator or a transistor or other component to power the device. I will have an external power supply, most likely 1 or 2 lipo batteries to power the whole thing too.

Question by Garebear350   |  last reply


Boost Converter help

I need a dc-dc boost converter that will step 25.9 volts at 2600 mah up to around 388v at 360 ma will I need a battery back with a greater amp output I can get up to 12000 mah at the same voltage any suggestions I am trying to charge a .1 farad cap bank that consists of only 10 caps Any help is appreciated -TDC

Topic by ThinkDesignConstruct   |  last reply


Step up 6 volts to 9 volts? Halp!

I have a GB Instruments dmm i got at a Hamfest (Ham Radio Fest) in Peoria, IL a few years back for like $6. It's great, and its more accurate than my father's Craftsman from Sears that he paid $40 for about a year ago. I have replaced the 9 volt battery twice in it. 9 volt batteries are horrible for capacity, and I use this DMM so much it's almost a high drain on the 9v. I know that a standard 9v holds 500-700mAh. I have a whole box of old AAA batteries that have about 1.4+ volts still in them from a stupid car toy that drained an AAA .1v-.2v and called it dead. A standard AAA alkaline battery (E92 or equivalent) holds 1,200 mAh or 1.2Ah@1.5v. 4 alkaline AAA batteries holds 4,800 mAh@6v. I can fit 4 AAA batteries in the 9 volt holder in my DMM snugly with a piece of foam for anti-rattle. That's only 6 volts. The DMM will power on very dimly at 6v, so is there any circuit to make up for the lost 3 volts without adding a bulky power pack? There is a LOT of room in the DMM for mods n stuff. Thanks for any help Is there any way to step up

Question by lilpepsikraker   |  last reply


12V from 9V battery or other easy alternative?

Hello, I need a 12V 0.2A(min) power supply for a project... I don't want to use any kind of strange or expensive battery because it's a gift for someone. I was planning on using a 9 volt battery, is there any easy way to build maybe a step-up transformer for it (needs to be very compact)? Or could I use AA batteries? I don't want to use 8 AAs though, I do know that's be 12 volts... Thanks, any help is appreciated. 

Question by j.hawkins   |  last reply


How to Boost Voltage from 1.2 (or 2.4) Volt to 12 Volt?

I want to Build a flashlight as small and bright as possible but it doesn't need to last long. I allready got a case i want to use, it has enough space to fit 2 rechargeable AA's and 2 1000mA LED'S + cooling thingy. But to build it I need at least 7-8 Volts (12 woud be better). I only need it for like 10 Minutes between recharging so I don't really care about efficiency. Every schematic and formula will be helpful :) Oh and it would be nice if it's cheap ^^ Thanks from Germany :)

Question by Yakumo   |  last reply


How to wind a step up transformer ? Answered

I need to make an ac step up transformer with an input from the main, output of 400v ac to connect to the a bridge bridge rectifier. The bridge rectifier number is D35XB60.

Question by mind power   |  last reply


stepping up 8.1v to home usage

I have a permanent magnet motor which i found in my store (old gemini gate motor) i have built a small wind turbine that works well, so here is my question, i need to make this turbine generate enough power, to power my hot water electric geyser. i hope there is somebody that can help me i am really novice to this, i have read about inverters etc (even bought a book - electronics for dummies - great book i might add) to help me but i am not coming right ! i really hope someone can help me

Question by nicobotha12345   |  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


How to convert dc to ac? Answered

Hi! Can anybody tell me how to convert dc to ac i actually want to convert 9volts dc to 9 - 7 volts ac cause i need to supply this ac voltage to a step-up transformer so that it will convert it into 200volts the real problem is when i provide 9volts dc to the step-up transformer it only gives out 41volts in output but when i gave it 9volts ac from another transformer it gives out 200volts ac and that's what i need but i need it to be battery powered so i need to convert the 9volts dc supply from the battery to 9 or less volts ac that's all i want to ask how to do it!

Question by ubdussamad   |  last reply


dc to dc step up converter for 22v 6 cell lipo to get to 44 volt , need advice

Im building a power harness for my hang glider, the project is very near completion, my brushless out runners require 44 to 48 volts. I am using two sets of 22v 6s in series, but the weight of two large 6s batteries banks is significant , what would be the potential to create this step up converter and what are the down side of designing dc to dc step up converter into my power system. My hope to eliminate the in series battery ( double battery  weight ) set up.  I suspect loss of amps or total run time ? what about problems with electronics  heat in the circuit, issues with ticky speed controllers, or the out runners , how will they be effected , or will these components work normally in a step up voltage / current  as compared  batteries in series. ( which is working beautifully ) I guess volts are volts, it just sounds to good to be true , double volts and less battery weight Any and all qualified opinion and advice is appreciated.  Thanks Jeff

Question by JeffR135   |  last reply


Constant voltage AND constant current? Answered

Hi, smart people of the internet :) Is there a power supply or a converter that can be set on a specific voltage and current, and keep both constant at the same time? I looked at ebay converters like B3606, DPS5015, BST400 and the like. They all have constant voltage (CV) and constant current (CC) settings, but they can't do both at the same time. If for example the current being drawn is too high, the unit switches from CV to CC and drops the voltage as much as needed to keep the current constant. Is a simultaneous CC CV power supply even a thing? Thanks!

Question by Morgantao   |  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 limit amp draw of motors?

I am building an ROV that uses four thrusters, each can draw up to a maximum of 3-5 amps (motor says 3, website says 5 here). However, I will need to step up the voltage and I cant find anything that provides more than 10A continuous (currently using this but open to a higher amp option), so how can I limit the current the thrusters use in order to make sure that I dont blow out the DC-DC converter?

Question by OlliM1   |  last reply


CATV CONVERTER HELP?

I came across a CATV CONVERTER Jerrold 550 model # DP7113 and when i tried to hook it up to my TV i got a blue screen . channel 4 was the only channel that was  somewhat visible . if anyone can please give me some basic instructions  i would appreciate it very much thank you   

Question by rottieowner90   |  last reply


Why is my step up converter not increasing voltage and why output is a little lower than input?

My step up converter is not working ,it wont increase the voltage . I used a multi meter and the output ends up being lower than the input like for example when I connected the battery to it, the battery was at 8.40v and I checked the output and it was 8.10v . I was trying to make a DIY speaker for the first time,  I am new to this.  step up converter  is called a MT3608 LM2577. I got it off of aliexpress.     https://www.aliexpress.com/item/DC-DC-Adjustable-Boost-Module-2A-Boost-Plate-2A-Step-Up-Module-with-MICRO-USB-2V/32668154181.html?spm=2114.13010608.0.0.a2VAYu The battery i used is off a battery pack .it is 8200 mah and 9v

Question by Alex345   |  last reply


Converting Dc to Ac

Ok this is my first post on this site so forgive me if i sound stupid...i like to tinker with things so just to tell a little about things i have done...completely rebuilt a pc..wired up an adapter for an old xbox to work on pc...the easier things....fixing frayed speaker wire....rebuilt/and upgraded a zune 30gb to zune 60gb the usual stuff...my most proud is overclocking my amd 64x2 4000+ to 2.9Ghz.....everyone said it couldnt be done...........anyways on to my question.......i want to know what all i will need to convert Dc to Ac power for a set of old desktop speakers i found in my closet.......i have an idea of what i want to be able to do.......put them in a backpack and make it portable.....currently i have two old 7.2v 1200mah Rc car batteries that i would like to use to power it.....and i also have a charger for them...it can charge and discharge...its old but works....so now my next step is what else am i going to need to complete this project...i dont know a whole lot about electricity but know enough to follow directions...if someone has already done this or knows how to and could walk me through what i need to do i would greatly appreciate it....

Topic by Celestial_Artisian   |  last reply


How to make an BJT astable multivibrator run faster than 30Khz that works?

I am working on a dc to dc converter and it works but it seems to me that when i go higher than that it doesn't work anymore. I am using two C945 transistors. The resistor values for R1 and R4 are 1K and for R2 and R3 are 15k . For the capacitors C1 is 2.2nf and 1nf for C1. i have tried putting in smaler capacitors and increasing the two base resistor values. BTW its for a dc to dc converter that im working on. I also have no idea how much inductance on the inductor is. I am try to step up 6V dc to 15 V. It works put its low on power thats what i want.

Question by josh1001   |  last reply


A way to step up 30uV-300uV to 1mV+?

So I'm working at a TV repair shop but really we fix and work on almost anything electronic. In this situation we have a NEUROSIGN 100 which is used to tell the surgeon when he's near the nerve, but he needs the voltage spike to be recorded on paper when he touches the nerve. The problem is that the machine only gives out around 30uV-300uV as he is working and the electronic ghraph we have only startes recording at 1mV. We need a way to step up that voltage coming out the machine so that ghraph will record it. We tried a small audio amplifier but that didn't work at all so we're back to the drawing board.

Question by Jimmy Proton   |  last reply


How to connect a 12v/5v dc converter to a standard 12v plug? And still use the plug?

I need to power both a Raspberry Pi and a 12v touch screen from the same 12v source. I know that I can use a dc voltage converter (like this one: http://amzn.com/B00GQ4DTGQ) to step the voltage down to the 5v for the pi. The power supply has the circular 12v adapter (e.g. http://amzn.com/B00GUBVI9K). My question is how to I attach the voltage converter to the 12 supply, and still be able to use the 12v supply for the touch screen? Thanks!

Question by mwbuksas   |  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


Does anyone know how to convert 9vdc power to 12v dc power?

Does anyone know how to convert 9vdc power to 12v dc power? ive looked all over the internet and nobody seems to have any schematics for anything like it. It needs to be about one or two square inches. Its for a pellet rifle with a built in air compressor so i can travel through the woods and not have to worry about going back to the truck and airing it up. please email me at mongoose_08@yahoo.com thanks

Question by mongoose_08 


What is the simplest and most efficent way to convert 3v to 5v?

There are several circuits out there on how to up-vert a 3v input to a 5v input, hwever I would like to know the simplest way.

Question by Sargebubbles26   |  last reply


Help converting 60hz to 50hz

I currently have bought an aquarium pump from the UK and am using it in the United States. I have bought a step up transformer that goes from 110v input to 220v output. The pump works, but is not functioning properly, it loses flow rate over time and gets pretty warm. One thing that I think may be affecting the performance is that the frequency difference between what the pump is rated at and what is supplied here in the US. What would be a cheap (<$100) easy way to test if it is the frequency issue? How would I convert it? Thanks!

Topic by brandon3rdstone   |  last reply


Need 110 AC to 12v converter help?

Am trying to put a boat radio on my patio, plugging into house current.  The radio uses a 10amp fuse.  All $5 converters I find on the net are for cell phone chargers and the like.  I don't think they have the power I need.  Have seen something about using an old PC power supply, but I'm not sure it will stand up to the weather, even though it will be in a box, and I don't know how to determine which outputs would be 12 volts.  Anything I have found is WAY over budget...I'm trying to find something for less than $25.  Am I on fools errand?  Are there options I don't know I have?  Any help is most welcome! ***REVISION***  I should qualify....the radio is actually an AM/FM CD radio, not VHF or Ham.  Sorry for the confusion. 

Question by craigo   |  last reply


designing an LC4/LC5 package for mm-devices using Eagle CAD tools?

Hello every one, Since i am totally new to PCB designing and all these stuff, I want to know few things about Eagle CAD tools I will be designing a Frequency up-donwn converter as a University course project. out of many components selected for this project one of them is as follow. http://www.hittite.com/content/documents/data_sheet/hmc523lc4.pdf i have gone through designing of the LC4 package, i hope it would be fine, still i would like to know how to creat ground of a package, creating outline boundries of package (is it from wire or from rectangle, polygon??) and about symbols inside this package, i am confused about drawing them exactly and connecting them to each other (via wire or net or what??), should they be just symbol or e.g i have to draw even what is inside circuit of a mixer or amplifier etc.. I shall be very much thank for your kind help

Question by lali2 


Anyone know where I could acquire a 120VAC-24VDC converter that outputs ~20A? Answered

Preferably at a price that doesn't break the bank.  I've been thinking about setting up a UPS for a robot that I'm working on, and 20A should be a bit higher than the amount of current that it would draw when up on jacks.

Question by killersquirel11   |  last reply


Making A Dual USB 3V TO 5V Converter, HELP?

So I was browsing the web and came across this "3V to 5V 1A DC-DC Converter Step Up Boost Module 1PC" and was curious to know if i could attach a "Dual Usb Type A Female PCB Connector Component" to it?  Is this possible,  because I know that the single "Step Up DC DC Converter Boost Module 3V To 5V 1A USB Charger" has one output connector. Therefore if i buy the module without the "USB PCB connector"  will it be able to support a "Dual Usb PCB connector" once I soldered it on?? 3V TO 5V STEP UP MODULE LINK:  http://www.ebay.co.uk/itm/1PC-1A-3V-to-5V-DC-DC-Converter-Step-Up-Boost-New-Module-/301725169466?hash=item464038b73a:g:n94AAOSwQJ5UR2eo DUAL USB FEMALE PCB CONNECTOR LINK: http://www.ebay.co.uk/itm/Desktop-Dual-USB-Type-A-Female-8-Pin-PCB-Male-Connector-10-Pcs-/291502771561?hash=item43deeb4d69:g:uiQAAOSwMmBVj~fc Please let me know if this will be applicable in response! thanks for your time ,RookieSean

Question by RookieSean   |  last reply


How to convert existing website to wordpress?

Step by step guide for a newbie...liek you are epxlaining it to a housekeeper..dummy it down

Question by cwpnet   |  last reply


Idea DC-DC converter step up from usual power bank as external battery for nikon DSLR

Can anybody build a circuit to convert the 5v-2.1A to 8.4v-2.5 to be able to power on the DSLR camera USB output 5V*2.1A=10.5W Camera input 8.4V*2.5A=21W The idea inspired from ifootage Electric Ray E1  ,I don't believe in would power on my DSLR nikon D7100 probably, plus it's too expensive for me 

Topic by assem555   |  last reply


How do i make a 1 amp boost converter that converts between 3-5v to 5v?

Hey, so  have been buying pre built boost converters but i wanted to build my own, my question is, how can i make a step up boost coverer circuit that takes between 3 and 5 volts and converts it to 5 volts at 1 amp. In you answer could you explain what each part does? Thank you!!!

Question by jbdawinna   |  last reply


Power Electronics: power converter Answered

I have been running through example questions for an exam I have coming up; the following picture is a condensed version of half a page of working. My lecturer gave us the solutions and a few steps between beginning and end to get to the solution so we could work it out. However, as you can see the picture below I got 30.6A whereas she wrote 54.2 down. The problem is to "Find the maximum values of the average" (done this bit) "and rms thyristor currents for any firing angle, alpha.". The values of R and Vs are in the diagram. Alpha is assumed to be 0 since then the thyristors will conduct for the greatest possible length of time. I think she may have got to the end then forgotten to square root of Pi before multiplying Vm/2PiR by it. Does anyone agree?

Question by Jayefuu   |  last reply


Is this the last step in an unstoppable robot?

I just saw this video via Laughing Squid's Twitter feed. It's a small robot from Boston Dynamics (the people that brought you the Mule walking pack-robot) that can jump 30 feet straight up. Now, imagine if they combined that leaping technology, and the ruggedness to survive the landings, with the terrain-crossing a flight capabilities of a Mini-Wheg MMALV, and you've got a robot that can get anywhere - as soon as the terrain gets too rough to clamber over, jump 30 feet straight up, and then either glide or fly under power to a better location! Come on, roboteers, get to it!  

Topic by Kiteman   |  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


I can't get Xbox Live with my dial-up. I tried the steps that instructables gave and I still can't get it.

I have the ethernet cable hooked to my pc, and went to my networks and did the wizard just like instructables said to do but it keeps telling me something is wrong with my IP address. It says my IP address must belong to two or more other devices. I don't know what to do. Thanks for any help.

Question by septsher   |  last reply


Which Boost/buck converter? LTC3780 vs LM2577S LM2596S

Hi, brought two boost buck converters to build a bench power supply from a atx psu.  Brought the LM version first as i have read previously that these are quite efficient, then seen the LTC one, so thought i might as well buy that as well.  Looks like the LTC board will be able to go down to lower voltages and appears to have a greater efficiency, quoted up too 98%, compared with the LM's at around 80%. Thou i understand that with adjustments changes efficncey.  LM2577S LM2596S http://www.ebay.co.uk/itm/281777880409?_trksid=p2057872.m2749.l2649&ssPageName;=STRK%3AMEBIDX%3AIT LTC3780 http://www.ebay.co.uk/itm/332009159315?_trksid=p2057872.m2749.l2649&ssPageName;=STRK%3AMEBIDX%3AIT Which one do you think i should use? Regards

Topic by JonathanM221   |  last reply


Ubuntu set-up? ?

I have a dell computer that I wiped of the Windows OS and installed Xubuntu 8.10, I am trying to intsall Ubunto. I need help installing it. I can not access the internet at the moment on that computer. I did go through the whole process of downloading the system last night before the internet went out on it. I did not get it loaded. It is just downloaded to the desktop. I also have a copy of it on my laptop to put on a disc. I put it on a DVD disc. Once I put that into the computer I did not know where to go from there. IF you can help me figure out the steps I would greatly appreciate it. I do not have a manual or any instructions. I am very new to Linux and firefox. Thank you for your help Mrs. Skunkbait

Question by Mrs. Skunkbait   |  last reply