Re: Buffer Amplifier for Digital Frequency Counter
Another thing is that the second transistor is biassed from the first transistor's gate characteristic, which is notoriously uncertain from device to device, s oquiescent currents could be all over the shop. Something a bit more RFy than a 2N2222 would also be a good move and an easy swap. These super-simple bias schemes save a few resistors (which are easily visible) but often add the need to use selected transistors (which is invisible right until it doesn't work)
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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