Re: voltage controller circuit

On Jun 29, 6:55 pm, "Charles" <charlesschu...@xxxxxxxxxxx> wrote:
<alishadevoc...@xxxxxxxxx> wrote in message

news:1183156608.061836.285850@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx



On Jun 29, 5:02 pm, alishadevoc...@xxxxxxxxx wrote:
Hi

I have 30 volt regulated adapter. I would like to create a circuit
which will allow me to control the voltage from 0 to 30.

Can anyone tell me where I can find a diagram for such circuit? I am
very new to electronic. I am creating this for my ety class -- mostly
to test series and parallel circuits, and few other lab work.
However, I may use it for other things too.

Thanks in advance

Update

I built following circuit on a breadboard and voltage regulator (5K
LM317 regulator) was burned -- sparking were coming out it...

Sparking? Sounds as if your input voltage is far beyond 30 volts.

Sorry, sparks were coming out of potentiometer. Voltage regulator is
okay, although it was very hot.

.

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