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|When working with electronics, you always need one basic thing; power. This power supply is great for powering all kinds of electronic projects. It produces a well filtered, variable 1.2-30 volts at 5 amps. It is easy to build and the parts are realitively easy to find.|
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|Hello, I've never wired up anything, but as a working tattoo artist, have run across the need to. What I am looking to build is a power supply with a 3 way toggle that could run 3 separate tattoo machines, one at a time. Preferably 0-18v @ 2a. Could someone please help me come up with a parts list and wiring diagram for something like this? It would be much appreciated. Thanks in advance!|
|I want to build a power suplly inwhich 220voltage (vac) is used and variable voltage 0-----30 volts will outper(DC) and the minimum output current is 1 amp Please help me to bulid this circuit diagram I WILL BE VERY THANKFUL TO YOU.|
|I have given up trying to locate a 24V 5A transformer. they do not exist. the one with the lowest amps I can find is a 10 amp. will that be ok?|
|R2 gets super hot, and the pot get in fire. These 2 resistors are connected from the positive to the negative rails, WHY? It burns the resistor across the rails. I am sure this circuit diagram is right, as I saw it from many difference places, but why the pot burned? I am sure I have a right setup.|
|More a curiosity question than anything. The LM338 schematic shows an input voltage of greater than 28V while you have a transformer outputting 24v spec'd out. (assuming 120Vac input) ?|
|I have a couple 13.8 vdc power supplies that were used for ham radio; I'd like to build an aux. project box to use as a 1.2 to 12 vdc, 5A Variable Power Supply. If I include everything to the right of the bridge rectifier in the above circuit, am I on the right track? ... Thank you very much for your reply!|
|Hi Aarron What pin on the 2n3005 is the IN, OUT and ADJ. The data sheet for the 2n3055 does not give this kind of info. Am I to assume that the IN is the Collector, the OUT is the emitter, and the ADJ is the base. I have tried to wire this up but it is not working. I may have burn something up or have it wired up wrong. Thanks Mike|
|i cant find the exact valued elements for this circuit and pruchased a 24 V, 3Ampere transformer, 270 Ohm, 4.7 K Pot, 100uF 63Vdc Electrolytic Capacitor, 8200 uf 50 VDC Electrolytic Capacitor. actually i want 3 ampee cureent and variable 2 to 20 volts. with these element what output is expected ? Sir, please tell me ASAP.|
|Nice but based on fairly costly linear regulator. With variable output power supplies it's important to easily get the output regulated voltage that you need at any particular time. My thoughts on this is either: 1) Permanently hook up a cheap digi multimeter so that setting the output is easy & accurate, or 2) Building in a panel digi voltmeter. I'd prefer this but do not have access to a low cost design. Can anyone help here|
|Looking to build a power supply for a foam hot wire cutter, wire will be 12 to 36 inchs long depending on project. Would this power supply work for this? I would like to have 24 v and anywhere from 5 to 10 amps, so that is what caught my attention to this power supply.
(Editor's notes: No.)
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