- PE-B1: LED on/off Circuit
- PE-B11: DC Motor Speed Control Circuit
- PE-B13: Automatic Street Light Control Circuit
In this circuit when we rotate the variable resistor clockwise, the speed of motor increases and when we rotate it anti-clockwise the speed of motor decreases.
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Page Contents
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Details of material required
About Components
- Resistor: It protects the LED from burning.
- Buzzer: It produces alarm when it is ON.
- Transistor: It has 3 terminals – collector, base and emitter. The emitter is shown with arrow in the symbol.
Circuit diagram & Working
Circuit Diagram
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