Electronic Cw Bug Keyer Circuit


Posted on Apr 23, 2012

This keyer uses skin conductivity to simulate the old-fashioned mechanical CW bug keyer. When the dit paddle is touched the bias on the inverter, ICl-a is shunted to ground, and it produces a logic high, causing oscillator sections CD to generate a low-frequency square wave keying Ql for a series of dits.


Electronic Cw Bug Keyer Circuit
Click here to download the full size of the above Circuit.

When the dah paddle is touched, section b produces a logic high, driving keyer Ql on.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Digital LCD thermometer ( PIC16F871 )
5V supply
Low-Distortion Amplifier/Compressor
LINUSBot - Line Follower Robot using Arduino
Nixie low voltage PSU
supercapacitor usb light
LEDs or lamps sequencer circuit
LED Volt Meter Circuit LM324
N1FN Key Collection
Super Buffer for Guitars
FM Crystal Radio Receivers
Door touch switch circuit (CD4069) schematic



Top