This circuit was found in old documentation, but the setting applies to any operational. Resistors and capacitors determine the frequency. For the indicated values the frequency is 10 kHz.
The 4518 can be cascaded to count to values higher than 10. The output EN of this device can be...
This oscillator uses a ceramic resonator to determine the frequency. This kind of element is found...
This small transmitter appeared in the March 1989 issue of Radio Electronics magazine. The...