Thank you Jinx for the links your provided. The circuit from Silicon Chip is a bit more complicated than what I want to do, but I'll try out an astable multivibrator. On 6/7/06, Peter wrote: > > Jinx clear.net.nz> writes: > > > http://home.clear.net.nz/pages/joecolquitt/luxeon_lamp.gif > > Is that circuit fairly efficient ? Also, the voltage/current metering device > using Q3 and Q4 looks like it would introduce the Vgs of the open 2N7000s in > series with the measured voltage. No ? > > Peter > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- Scott Larson 1136 W. Oakdale Apt. 1 Chicago, Il, 60657 619-400-9775 http://goldscott.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist