Touch Plate Circuit With High Sensitivity PCB

Posted on Feb 5, 2014

Here is a high sensitive touch plate circuit using NE555 which turns on a buzzer when anyone touches the metal plate or by hovering his hand over the plate. From the previously published touch control switch circuit, this circuit has an advantage of high sensitivity that it can detect an input voltage as low as 1 micro volt. This circuit is attac

Touch Plate Circuit With High Sensitivity PCB
Click here to download the full size of the above Circuit.

hable to various designs such as touch plate lightning or motor control with necessary alterations. As i said before, the main component of this circuit is a 555 IC which triggers when the pin no. 2 gets a voltage about 1 micro volt. The relay connected at the output will allow you to use this as a switching circuit. In this specific circuit, a UJT is connected through an output transformer to produce a sound.

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