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The FET pipe drive timing flash circuit

2017-02-05 20:33  
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The FET pipe drive timing flash circuit
With the figured circuit, we can compose a circle light timing control circuit with a few elements. The circuit consists of the MOS time-base circuit 7555, CMOS decimal counter(pulse distributor) 4017 and end stage VMOS power transistor. The power transistor controls the bulb whose maximum current is 2A. The resistor RV between the bulb and the power supply +UH is used to limit the connected current. The time-base frequency is adjusted by the potentiometer (about 0.5~10HZ). The 9 stage circling storage is controlled by the square wave output signal with the help of the clock.