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23rd August 2009, 07:55 PM
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diyAudio Member
Join Date: Oct 2008
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Matching Tester
This circuit is a lot like many front ends. All the resistors are 10K. The collector voltages (nodes 1 and 2) should be very similar, about 7.5 Volts. However, the important measure of matching is the voltage difference between nodes 1 and 2. The circuit weights Vbe and beta matching in a way not too unlike a typical input stage...of course, "your mileage may vary", but I still think that this circuit, or something like it, would be useful.
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