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Regulated power supply

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rahul.6sept

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I need to design a regulated power supply using transistor capable of providing 5 volts at 1 A.What should be the parameters for the same?
 

Hmm.. Why do you want to use a transistor?? This specs is exactly met by the 7805 chip.. Use one.. It provides upto 1Amp at +5V and you can use 7905 if you want -5 V
 

I know that 7805 can be used for this purpose, but i need to design using transistor.Please tell me how to do this.
 

One option to generate 5V is to use 5.6V zener diode and NPN transistor ..
Here:
**broken link removed**
you will find detailed description of this simple voltage regulator ..

Regards,
IanP
 

Why dont u use LM317 in fixed resistance configuration.

It will work for your requirement
 

do you want to go with series regulator or parallel one?
 

Transistor usage is not necessary... because power transistor is bulky.. u can provide foldback , if u want to save power under short circuit stages.

depending on the load speed, the feed back system will be decided. I mean speed and bandwidth of the feedback op amp....
 

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