Using 3 ports, this rectangular oscillator was found in the March 1996 issue of Electronics Now magazine. The maximum frequency is a few megahertz, determined by R1 and C1.
This circuit was found in a Philips documentation from 1966. Its purpose is to drive the solenoid...
This 9 V amplifier has a gain of 20 and provides a power of a few hundred milliwatts. The circuit is...
Found in a 1964 Electronic Design, this circuit shows how to modulate a signal with a dynamic low...