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 can be used both as a beat oscillator and for testing and adjusting AM receivers for...
Using a 4046 PLL, which is not very common nowadays, this circuit was found in the October 1994...
Found in a 1991 Hobbyst Handbook, this circuit monitors both battery and alternator voltage. The set...