Re: How to amplify voltage?

From: Tom Biasi (tombiasi_at_REMOVETHISoptonline.net)
Date: 09/07/04 

Date: Tue, 07 Sep 2004 10:02:51 GMT

"zalzon" <zalzonishappy@zalll.com> wrote in message
news:oasqj0th2b4sjha9mc652e53rdit34j1cj@4ax.com...
> I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or
> whatever voltage level I want?
>
> Is this something that is easy or hard to do?
>
> I should be easy enough to reduce voltage from 20V to 5V. Just put a
> resistor in the path of the current. But how to do the reverse? Step
> up the voltage....
>
> I'm thinking coils like a transformer or something. Am I on the right
> path?
>
>
You are on the right track. Investigate what a transformer does and what
causes it to do it.
See if you can discover what happens on the input to get a certain output.
You will probably see some new terms and be introduced to some new concepts
on your quest; bring your questions back here.

BTW: When you use a resistor as you describe you didn't reduce the voltage,
you just let some of it reside in a different place.
Tom

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