This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was found in a 1980s documentation. The diodes are commonly used.
This circuit is based entirely on SCRs. The circuit is from an American 80's documentation; and the PUTs...
This circuit was obtained from a 1978 Practical Wireless. It causes an LED to flash at a frequency that...
Found in an American publication, this circuit applies to almost any operational amplifier. The power...