This circuit was found in Radio Electronics from the 90s. The CMOS integrated circuit is a PLL not easy to obtain today. The output stage can be exchanged for another one with greater power.
This circuit is from an old French documentation from the 70s. The coupler admits equivalents and...
This fast trigger circuit allows the counting of up to 300 pulses per minute. The circuit is from...
Frequency modulated signals up to 500 kHz can be decoded with the PLL we show. The demodulated signal...