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Guest Ceawlin BSX029

FSBus COM transistors

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Hello all, here's a question for those who know more about electronics than I do :DOn the FSBus COM board there are three transistors. As far as I can make out on the circuit diagram, the emitter leg goes to earth. On the PCB, however, the collector goes to earth instead. Either I have the transistor the wrong way round or there's something wrong with my interpretation of the schematics!Help! Which way round do they go??

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Hmm, can it be because of the mirrored pcb printout?I think its mirrored to be flipped when exposing through the pcb layout printed on a transparent film. This is to get the printout side closest to the board to minimize shadows and blur arounde the edges of the exposed wiring./ Olle

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Bah, the great thing about this forum is finding out where you went wrong :)Turns out I had over-reversed my printout, board was back-to-front :(Oh well, at least boards are cheap!

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