Cw Keyer

Posted on Jun 22, 2012

This electronic keyer uses four ICs (five, if the optional sidetone oscillator is desired) and operates from dc sources of 9 to 15

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

V. A 2N2222 is used as a keying transistor. If isolators or more power handling ability is desired, a 6-V relay can be keyed with the 2N2222 and the relay in turn can be used to key the transmitter.

Leave Comment

characters left:

New Circuits



Popular Circuits

Simple high-volt supply
Photo stop action
Tarry light
15W Inverter Circuit 12VDC to 120VAC
Reading an SD card with an ATMEGA168
fluorescent lamp project
Automatic Muting Circuit For Audio Systems PCB
Laser Controlled ONOFF Switch
LED current limiter accepts ac or dc
Inductor saturation tester alternative route to dump the excess energy
Access Flash Drives with a Microcontroller
Three reversing operation of the reverse brake circuit