555 as the core of a circuit diagram of proximity switch


Posted on Mar 28, 2007

As shown, the proximity switch 555 as the core component monostable trigger circuit. 555 Trigger Pin 2 through the large resistance R2 connected to VDD, is waiting for a trigge


555 as the core of a circuit diagram of proximity switch
Click here to download the full size of the above Circuit.

r condition. When the body close to or touch the metal plate electrodes, since the sensor signal 555 is triggered, a one-shot pulse output. C2 filtering for interference. The circuit can be used for electrical appliances, toys or alarm circuit.




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