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Tuesday, 27 October 2009

HB-1A kit the mysterious R47

R47...For those asking what??? and have a kit, it is on left hand edge (SMT side) to right a little higher than T2. The smt version uses a through hole 2N7000 forQ4, maybe if it fails easier to replace a through hole version? Anyway the centre pin (G) goes to R45, the bottom pin (S) goes to Q1 base, top pin (D) goesto C1... between them there is a R47 that connects the pin to ground...It is not on the schematic. On a built version... (thanks Roy) it is marked 103.

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