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.
The circuit presented consists precisely of an oscillator (multivibrator) that takes advantage of the 4...
This 13.6 V power supply with 8 A output was suggested by Texas Instruments in the documentation of...
This circuit was obtained in an Italian magazine Sperimentare of 1975. The coil consists of 100...