How can I design an adjustable voltage power supply?

[xiongnr]

How can I design an adjustable voltage power supply?

The voltage of the power supply can be set from 0V to 100V.It should be very stable.

I want to get a design circuit of this power supply,than I can choose the component.

Thank you very much.

Best regards.

 

[thannara123]

Please check the datasheet of various voltage regulator (search on Google )
**broken link removed**

 

[alexan_e]

It can also be done with a linear regulator but the heat produced and the efficiency would be much worse.
I don't know how much is the output current you need.

An example of a linear regulator is shown here
**broken link removed**

It uses an LM317 which works fine as long as the input-output difference is below 40v, the circuit uses a tracking pre-regulator (transistors) that feed the LM317 input with a voltage slightly higher than the output.

Alex

 

[xiongnr]

The output current is nearly zero,the smaller the better.

Thanks.

 

[ZASto]

Well, my dear Mr. Stowe,

on this board are mainly beginners (newbies) in electronic (and many others) field, so, you could HELP instead of advertising your services.

 

[JohnRocks]

Adjustable voltage regulator is made by combining a common 78L05 with an integrated audio amplifier of the type tda2030; an adjustable voltage regulator can be constructed in a very simple manner that works very well.

 

[alexan_e]

Adjustable voltage regulator is made by combining a common 78L05 with an integrated audio amplifier of the type tda2030; an adjustable voltage regulator can be constructed in a very simple manner that works very well.

I'm very curious , how do you intend to use a 5v regulator and a 36v audio amplifier to make a 0-100v adjustable power supply?

Alex

 

[andre_luis]

xiongnr


Depending on power required and efficiency desired, you should think about a switch mode power supply aproach.

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