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Ed_Dinning · 24th Oct 2006, 8:35 pm

Hi Adi, there are several simple transistor oscillator circuits with feed back to the base via a seperate winding. This may well drift a lot with battery voltage and temp. It probably wouldn't matter in your circuit.
A 555 would also work as would several of the C Mos chips when biased near their mid points.

Ed

24th Oct 2006, 8:35 pm	#5
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,194	Re: compact HT generator idea Hi Adi, there are several simple transistor oscillator circuits with feed back to the base via a seperate winding. This may well drift a lot with battery voltage and temp. It probably wouldn't matter in your circuit. A 555 would also work as would several of the C Mos chips when biased near their mid points. Ed