On Wed, 25 Apr 2007 14:18:20 GMT, put finger to
keyboard and composed:

Hi I need to convert 12 volts ac to 24 volts ac for an outdoor
lighting project low amperage, say 500 ma. I am looking for a small
boosting transformer on the cheap. Any suggestions on where I can find
something like this? Alternately I could use a cheap 12 volt ac to 24
volt dc converter. Google has turned up endless garbage for me.

Thanks


Here's a voltage doubling rectifier:

D1
o-----|--||-----|-----o +16V
| _|_ +
12VAC | --- C1
rms | |
o----- )---------+-----o 0V
| _|_ +
| --- C2
| D2 |
|--||-----|-----o -16V

The unloaded output voltage is around 33V, but under load you may get
closer to your target.

- Franc Zabkar
--
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