puff to off circuit


Posted on Feb 6, 2014

This is a circuit diagram of a simple circuit in which the LED burning can be activated only by a gust OFF. A condenser mic (M1) is used to feel your breath. When the S1 button is pressed, transistors Q2 and Q3 as a couple wires attached will be activated and drives LED shines. LED remains in this condition. When you puff on a condenser mic, the s


puff to off circuit
Click here to download the full size of the above Circuit.

ound pressure converted into a voltage signal at the output. This voltage signal is amplified by the transistor Q1. Since collector of Q1 coupled to the emitter of the pair attached, the couple will stop doing as there ever was a signal from a condenser mic for panting and the LED will go OFF. Push button switch S1 should be pressed again to turn the LED ON. The following is a schematic drawing:




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Power tool torque control
CELLPHONE SERVICE-PHANI BUGUDUR
Dynamic Microphone Preamp
Light Bulb Pirani Gage Project
pic digital clock timer
simple swr and pwr meter
photo sensor control relay
automatic pet feeder
AT89C51-12PI AT89C51 80C31 Microcontroller With 4K Bytes Flash Use AT89S51
Advanced Laser Diagnostics Laboratory
pulse induction metal detector with DSP
Description of an active reversible in-phase/quadrature modulator carrying out frequency UDC
PWM - Pulse Width Modulation for DC Motor Speed and LED Brightness 2
Video Digitizer Project
Phase indication by vectorscope



Top