Cycle timing controller 3

Published:2011/8/8 3:47:00 Author:Ecco | Keyword: Cycle timing controller | From:SeekIC

The cycle timing control circuit is composed of the power supply circuit, ultralow frequency oscillator, display driver circuit, counting flip-flop and control implementation circuit, and it is shown in Figure 3-91. The power supply circuit consists of the step-down capacitor C6, discharge resistor Rl5, rectifier diode VDl, voltage regulator diode VS and filter capacitor C5. Ultralow frequency oscillator consists of the dual D flip-flop IC IC2 ​​(a D flip-flop which is inside of IC2) and electronic switch circuit ICl, potentiometers RPl, RP2, resistors Rl, R2, capacitors Cl, C2, diodes VD3, VD4.



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