modified 10 years ago

Could someone help me build a power supply

01:28:40

Please help me build a power supply that has a 30 0 -30 volts output and 6 0 volts. Pleaaaase. With short circuit protection and auto polarity detector. I need it in our school project. You can add me @ faceboook. Mark Austin Alfonso Cabrera

published 10 years ago

muhammadujer

10 years ago

Test

SkeLe

10 years ago

Buy a dc dc converter form an online shop (ebay amazon...) they are very cheap.

lmccoig

10 years ago

In kit form, one source http://m.gearbest.com/development-boards/pp_208053.html?currency=USD&gclid=CjwKEAjw3uWuBRD_s-3a8-_h6j0SJAC-qgtHB-6_OW3bSG11bbstG0jVoAXTlMJW3gTs4IwK_nO4_BoCjvfw_wcB

lmccoig

10 years ago

Another selection, http://www.eleccircuit.com/simple-variable-dc-power-supply-0-30v-2a-for-beginners/

thebugger

10 years ago

It wont be very simple. I'll try and make an example. Search for ,,For nkarm193''

thebugger

10 years ago

Let me first get the parameters straight. The transformer should be 35-0-35V and you need a stable output with protection at 60V or 6V

SkeLe

10 years ago

Yeah if you want to do it yourself you can use an lm317 and use some bypass transistors. If you serach on google lm317 power transistors you will find something interesting for you

thebugger

10 years ago

Lm317 will work only up to 30V and from what i could gather he needs 60V. Plus that'll be cheating i think.

SkeLe

10 years ago

Ah I've not read good

va2bkl

10 years ago

Your error is to use a transformer with a already AC source. You don't need a transformer. Put DC=0v, Amplitude=30v, Frequency=60Hz (depending your country). Reverse cathode of top diode and reverse that one on bottom right corner. Place a R 1KOhm between them and square fence around the source. The positive half-way is between the resistor and right-hand diodes.

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