Touch Switch low cost by Timer IC 555

This Touch Switch circuit use a part compares with voltage 2 group , within the integrated circuit timer LM555 or NE555. For perform wait for catch the change of voltage , which be born from way leakage touches by change a finger. When the value is Resistance at drop the pate which build with pin 2 of the integrated circuit is valuable are down the level is Voltage output (pin 3). Will have the condition voltage high for apply the work and other circuit next. The detail is other , a friend sees in the circuit yes.

Touch Switch By IC 4001 & 4020
Circuit Touch Switch By IC CD4001, CD4020 This be touch switch be simple again the circuit. It use integrated digital circuit is important equipment, and use volt power supply low just 9V. By use single metal, it works in the character turn ON and turn OFF. By when touch for the first tim ...
Touch Switch using digital IC
If friends seek touch switch Circuit model to be simple. I begs for to advise this circuit, use integrated digital circuit number IC CD4001 perform be Schmitt Trigger , and the integrated circuit IC 4020 perform be two divider circuit. It is control electric appliances work with Relay by ...
Standard Touch Switch by Gate of IC 4011
This circuit uses a 4011 logic gate digital as the bases of the touch switch. It are Standard and very easy because I used a Gate of IC 4011. In circuit at pin 2 of 1/4 IC is Hi logic "HI" alway. If touching the plate connected to the 2 numbered,so logic output is Hi ,but don't touching ...
Touch Switch using UJT 2N3819
This be Very Simple Touch Switch Circuit. It used UJT 2N3819 is Main part numbers should set up this outside building circuit. When stay far from electric line or Power Line very much. Enough touch at infront touch 1 metal and 2 make Relay work ON get. When but urgent touch 2 meta ...
Simple Touch Switch One Shot by 4011
Here is a simple touch control switch, I use IC 4011. Logic HI at output is timer pulse delay control by C1 1S = C1 4.7uF(micro farad), After touching the plate connected,so well pulse output. Detail more, Please read in this image circuit. Related Links Circuits Micro touch sensor ...