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TRANSISTOR_MATCHING_CIRCUIT

2016-05-09 02:57  
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TRANSISTOR_MATCHING_CIRCUIT
In order to match two transistors, select Q1 and Q2 so that they give zero readings(or as close as possible)on a DVM. The DVM acts as a null detector. An analog meter can be substituted. S1 should be set for an appropriate level of base current(approximately 8,80,or 800 μA).