[sdiy] TB303 / Polysix VCO current mirror thingy.

rburnett at richieburnett.co.uk rburnett at richieburnett.co.uk
Fri Apr 6 13:05:18 CEST 2018


> ...but when they switched them off with the switch upstairs the hall 
> light would - after a few minutes - begin to flash about every
> 30 seconds.  Blink... Blink... Blink...

Apparently even the capacitance in long cable runs to switches was 
enough to make some early CFL units blink!  I think modern ones 
sacrifice a bit of efficiency with a bleeder resistor to prevent this 
behaviour.



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