This polarity inverter circuit for voltages down to about -12 V was found in the December 1992 issue of Radio Electronics magazine. The current is a few mA.
Found in a 70’s documentation, this circuit can operate with signals up to 10 MHz. The operational...
This filter has a regulated source configuration. It can be implemented with almost any...
We found this circuit in a 1975 radio amateur documentation. The circuit uses TTL technology and...