This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s edition. The circuit is based on components of the time.
Figure shows the basic application of a data selector using the 4051 . The same configuration is...
This circuit can produce signals up to 100 kHz depending on C1 and R1 adjustment. The output has a...
This buffer with high input impedance and low output impedance was found in Motorola's Linear...