modified 9 years ago

Transistor switch driven from AC

01:17:50

Art of Electronics 3rd ed. page 74.

Red: base voltage
Green: collector voltage

The resistor (10K) connecting the base and ground ensures that the base is at ground when the switch is open.

A diode in series with the collector is used to prevent collector-base conduction on negative swing.

published 9 years ago

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