Bistable switch circuit diagram

The working principle of the bistable control circuit is as shown in the figure. Here is an example of a multi-place control switch for reference. Assume that the load is a light. When button AN1 is pressed, a positive pulse is given to the "CP1" terminal of IC1, causing the Q1 terminal of IC1 to output a high level, so the "CP2" terminal of IC2 also inputs a positive pulse, and its IC2 The Q2 terminal becomes high level. At this time, because the ④ pin of the controller DM is connected to the Q2 terminal of IC2, it is naturally also high level, and the signal light H lights up. Press AN1 again, the Q2 terminal of IC2 returns to low level, and the ④ terminal of controller DM also changes to low level and turns off H. In this way, each time AN1 is pressed, the working state of H can be changed.

This application circuit uses a dual D flip-flop integrated circuit CD4013, which contains two D flip-flop circuits. One of the D flip-flop circuits is used as a pulse broadening circuit. Its purpose is to prevent the pulse from being caused by the jitter of AN1. The number is uncertain; the other D flip-flop constitutes a bistable flip-flop. The method of using this circuit as an energy-saving lamp is: when you go upstairs, press AN1 and H will light up. After entering the room, press ANn again, and H will go out. The difference between it and the monostable energy-saving lamp is that the time from pressing AN1 to pressing ANn can be arbitrary and is not limited by time and space.