# guys, i need to conctruct this -12v power supply in multisim.

Discussion in 'General Electronics Chat' started by Kool Wicky, Jul 13, 2014.

1. ### Kool Wicky Thread Starter New Member

Jul 13, 2014
4
0
Kindly help me by showing all steps required. Video would be appreciable.

2. ### djsfantasi AAC Fanatic!

Apr 11, 2010
2,809
834
Is this homework?

3. ### Alec_t AAC Fanatic!

Sep 17, 2013
5,801
1,105
What are you going to derive your -12V from?
What current does the -12V have to supply?
Doesn't multisim have a voltage source model which you can simply set to -12V?

4. ### Kool Wicky Thread Starter New Member

Jul 13, 2014
4
0
Well it's a kind of homework. Since I am a beginner on multisim, i really don't know what to do. Every student has been asked to make it on multisim by using any means. Kindly help

5. ### Kool Wicky Thread Starter New Member

Jul 13, 2014
4
0
Actually we have to show each and every component in the supply. Multisim does have one supply but we are required to create our own. We ain't going to use it but just as a assignment you may say.

6. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,393
497
Do this with two 12 volt batteries:

You can find 12 volt batteries in MultiSim, right? Right? Please tell my you can find two 12 volt batteries in MultiSim...

7. ### Kool Wicky Thread Starter New Member

Jul 13, 2014
4
0
This is not my demand, I need the circuit diagram showing resistors capacitors etc attached in the circuit of a powersupply.

8. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,393
497
LOL

All we know is that your requirement is output of -12 volts.
Fine.
Guess what? A circuit has output and it has input. You specified the output requirement. You have not specified the input requirement. Since you don't have a requirement for input, I provided you with the SIMPLEST circuit that meets your requirement, which is output of -12 volts..

9. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,393
497
Here is another one.

MC7912
Typical setup:
-19 volts goes in.
-12 volts comes out.

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10. ### crutschow Expert

Mar 14, 2008
13,019
3,235
You really need input voltage and type (AC or DC) and output current requirements to do a design. If you don't know them, then they need to be defined by yourself for the purposes of the design.