Projects

Simple Touch Switch

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Project Owner : Nurazzaman Ahmed
Created Date : Sat, 07/04/2012 - 23:50
Project Description :

  

Circuit Notes


 

The MPF102 (Q1) can be replaced with a NTE451 or ECG451, but still widely available. JFET-N-CHAN, UHF/VHF AMP 
The 2N3565 (Q1/Q2) can be replace with a 2N2222(A), BC107, BC108, BC109(A/B/C), NTE123A, or ECG123A. 
The TIP31 (Q3) can be replaced with a NTE196 or ECG196, but is a common type and widely available. 
NO suffix.

The 'Touch Plate' can be anything non corrosive. I use a silver quarter. You can also use a small relay instead of the #53 bulb. The phone number for DigiKey is 1-800-Digi-Key.

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