AC frequency conversion ...

[DeepCut]

Hi.

I want to experiment with changing the frequency of power supplied to my desktop spotlight.

I've read up on it a bit and it seems i have to rectify the AC to DC, then invert to AC again. Apparently it can be done without using a transformer.

Can anyone point me to a circuit for this ?

I've searched a lot but not found anything yet.

Thanks if you can help,


Gary

[DeepCut]

Damn the idea i had has already been done.

I read that operating sodium or mercury-based lamps at much higher frequencies than 50 or 60 hertz meant they used 60 percent (or more) less energy.

CFL lamps have mercury in them and an electronic ballast that switches the frequency to 40kHz !

http://en.wikipedia.org/wiki/Compact_fluorescent_lamp#Construction

Ah well ...

[pese]

the lamps will not comes brighter from the higher frequencies.!
The higher Frequencies are used to hold the transformers, chokes (ballast)
ferrit-cores and numbers of copper windings so small as possible.
Pese