We found this circuit in the 1983 edition of the Electronics Experimenter handbook. The circuit uses components that are common today, although many admit equivalents.
This circuit generates 50, 100 and 200 Hz signals from a 2.2768 MHz TV crystal. The circuit can be...
The figure shows how to use the LM3900 to drain current from a load of up to 20 mA with the...
Frequency modulated signals up to 500 kHz can be decoded with the PLL we show. The demodulated signal...