This low-frequency sine wave oscillator was found in the December 1995 issue of Electronics Now magazine. The two-transistor circuit is a Wien or Vienna bridge operating at 1 kHz.
With this circuit, a relay can be activated from an alternating signal with frequency up to a few...
With this circuit the visually impaired can easily locate important places inside the house, such...
In the figure we have the way to use the transistors of an old-paired pair as a trigger circuit. The...