Junk device

Junk strobe scope obtained few days ago for ignition timing checking was proved to be a truely junk, does not work well. Disassembling the device, some booster circuitry and trigger circuitry exist and latter one is the equivalent of thyristor with PNP and NPN Tr..

I hope the replacement of trigger into much more sophisticated one(SCR) would recover the originally designed performance as strobe timing checker.

Anyway the future is not so dark and narrow.