Signal Conditioner

Posted on Aug 1, 2012

This circuit takes audio from a receiver that might have a weak CW or tone signal and uses a PLL (Ul) to recover the wea

Signal Conditioner
Click here to download the full size of the above Circuit.

k signal. Ul produces a low on receipt of a tone or note of frequency, determined by Rl, R7, and C2. The output of Ul (pin 8) goes low, keys tone generator U2, and produces a new tone. The circuit is useful in cleaning up CW reception in static, noise, etc.

Leave Comment

characters left:

New Circuits



Popular Circuits

Coil-less FM Transmitter
Digital Main Voltage Indicator
ADUC816 1MIPS 8052 MCU + 8kB Flash + Dual 16-Bit ADC + 12-Bit DAC
The ATL-3 Loop Antenna
80M CW QRP rig
DC-coupled multi-stage amplifier circuit b
555 tri-color flash circuit diagram ornaments