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G0HZU_JMR · 13th Apr 2021, 1:23 am

I think the early version had a small startup resistor across the collector and emitter of the 2SA473 and I think the 47k resistor in the base of the 2SA473 now helps with the startup of the later circuit. It's so long ago I can't remember now.

13th Apr 2021, 1:23 am	#8
G0HZU_JMR Dekatron Join Date: Sep 2010 Location: Cheltenham, Gloucestershire, UK. Posts: 3,077	Re: Superstar 360 I think the early version had a small startup resistor across the collector and emitter of the 2SA473 and I think the 47k resistor in the base of the 2SA473 now helps with the startup of the later circuit. It's so long ago I can't remember now. __________________ Regards, Jeremy G0HZU