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.
This circuit was found in the January 1989 issue of Radio Electronics magazine. The circuit sends...
We found this TTL power supply circuit in the December 1972 issue of Radio Electronics magazine. The...
This circuit was found in an American documentation from the 1980s. The sensitivity ranges from...