Category Archives: Motor Related



DC Motor Speed Controller

This is the schematic diagram of DC motor speed controller circuit. The circuit applies two oscillators/timers which are connected as a Pulse Width Modulator (PWM). The timer chip which applied in this circuit will be an nmos dual timer/oscillator NE556. This timer IC has two 555 timers in a single 14-pin IC package.

Electronic Motor Starter

The above diagram is the schematic diagram of an electronic motor starter circuit. This motor starter protects singlephase motors against voltage fluctuations and overloading. Its salient function is a soft on/off electronic switch for simple operation. The transformer steps down the AC voltage from 230V to 15V. Diodes D1 and D2 rectify the AC voltageā€¦ Read More »



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