Touch sensor circuit

294

05:25:57

When you build this circut,  not need the switch , just connect wire  on LED +ve terminal  and then leave open and another wire connect with the base of the  transistor , now  you got two separet touch sensor terminals one from LED and one from the Base ,  when you touch with your finger those terminals the LED light will be lit.

published 6 years ago

wyoelk

6 years ago

Lower the resistor to 150 ohms to increase the led brightness. Leds in this app are all set for 20ma and 2v. Nice job

hurz

6 years ago

@wyoelk, 150 Ω ???? 9V-2V = 7V and 7V/150Ω = 46.7mA its for a current limiting resistor a little to small, right?

wyoelk

6 years ago

470 ohms * 6.52ma=What the heck am I missing?? Let alone 350 ohms* 8.67ma=

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