Analysis of the working principles of seven triode collector DC circuits 5

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Analysis of the working principles of seven triode collector DC circuits 5 [Copy link]

5. Positive power supply PNP transistor collector DC circuit

The figure below is a positive power supply PNP transistor collector DC circuit. Q1 in the circuit is a PNP transistor, +V is the positive polarity DC working voltage terminal, resistor R4 is connected between the collector of transistor Q1 and the ground wire, and the collector resistor R4 constitutes the collector current loop of transistor Q1.

The collector current loop is: positive polarity DC working voltage + V terminal--R3--Q1 tube emitter--Q1 tube collector--R4--ground terminal.