This variable gain circuit for analog video signals was found in a 90s Linear Technology documentation. The circuit has an adjustable gain between -12 and +8 dB.
The circuit shown in figure 1 generates an intermittent tone in a piezoelectric transducer when...
Equivalent triacs and any diac may be used in this circuit of the 1977 GE semiconductor manual. The...
We found this circuit in the December 1968 issue of Radio Electronics magazine. The circuit is...