newbie here

[rhold_07]

hi guys..
i am newbie here and i would just like to ask for some help regarding this school project of mine. could anyone make me a schematic diagram so that i could check why my work didn't function well..

my project was a power supply with the following requirements:

- 220 volts input
3 OUTPUTS
- 15 volts positive(+) and negative(-) output
- variable output 0-20 volts postive(+)
- 5 volts positive(+) output

- 1 ampere output using current booster
- with heat sink, short circuit protection using electromechanical relay,and reset button
- blown fuse indicator

all rectifiers where in bridge configuration and the transformer had an output of 18v-0v-18v.
thanks...

 

[Nigel Goodwin]

We don't do pupils work for them, that helps no one - least of all you!.

But if you post the circuit of what you've already done we will make suggestions on your design!.

 

[Hero999]

You can base your circuit off existing linear powersupplies whch can be found from Google. It really isn't that difficult honestly.