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A variable dc power supply for electronics hobbyists 2010-07-13

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rajbex

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A Variable DC Power Supply for Electronics Hobbyists - A variable DC power supply is one of the most important tools for an electronics hobbyist. Most of


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so question, what is the input voltage for this? i can see the output and whatnot being within workable means, but how do i know what kind of power and how many amperes, ohms, and volts (and all the other stuff) are required to power it up and make it work. other than not knowing that, good job.
 
Greetings: Q? Add variable current (within limits of the LM350)..another LM350? Advise also to those using in and around RF...make sure you use decoupling caps or you will take out IC. -Bat
 
Supply

u wann to +5V thn use IC 7805

Basic 220V to transformer to Brigde rectifier to Smoothing to regulated
 
I didn't understand quite what you are looking for? This project provides a variable DC voltage ranging from 1.25 V to approx. 18 V that is required for doing basic electronics experiments. If you are looking for a variable DC source from 220 V to 5 V, it is way out of the scope of this project.
 
Variab DC Power Source fron 5V ~220 V

RITESH KAKKAR said:
OK..........!!
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A simple solution to ur query is to have a Variac (i.e. an wide range auto transformer with toroidal core) & get the AC out put converted to DC by using a bridge Rectifier however sharpness & linearity of out put response may be a question mark for such a large span of out put voltage range.
 
hi buddy. I would like to create a voltage regulator with 1.9v < Vout < 60v using lm317hv. Too bad that part isn't available in electronic store here, can anyone give a schematic without any IC or how to expanda the LM317HV,
 
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