Basic project: Want to build a basic power supply with variable voltage/amp output

[Chris]

Hi,

I am new to electronics, and I love to play/learn via hands on
experience.


What I would like to do, is built a home brew power supply with
variable output. Eg. A power supply that I can set to output
anywhere from 1.5 v to 120 volts for common household items. For
instance... lets say I have a hand held driller that requires 4
batteries ( 1.5 volts 1AA battries ), I would like to connect the
driller to my home brew power supply to get its electricty and power
the device.


Is this possible? If so, has anyone done it? I know you can probably
purchase one, but I would like to attempt at least at making one if
the costs are not high. I have many spare parts from vcrs power
supply, etcs..

Thanks to everyone for your inputs

 

[Thomas C. Sefranek]

Hi,

I am new to electronics, and I love to play/learn via hands on experience.


What I would like to do, is built a home brew power supply with
variable output. Eg. A power supply that I can set to output
anywhere from 1.5 v to 120 volts for common household items.

The range is probably excessive.
Do yu really need 120 volts DC?
A more realistic range might be 1.2 to 30 volts.

For
instance... lets say I have a hand held driller that requires 4
batteries ( 1.5 volts 1AA battries ), I would like to connect the
driller to my home brew power supply to get its electricty and power
the device.


Is this possible? If so, has anyone done it?

Many times.... more than I care to admit....

I know you can probably
purchase one, but I would like to attempt at least at making one if
the costs are not high. I have many spare parts from vcrs power
supply, etcs..

You should start with what you have for a step down transformer.
(Voltage and current ratings...)

Thanks to everyone for your inputs

E-mail me, if you want more advice.


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