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.
This circuit activates an incandescent lamp at dusk and goes out at dawn. The sensor is an LDR and...
We found this circuit in a Philips documentation from 1969. It makes use of transistors of the...
This high input impedance tone control circuit was found in American documentation from the 1980s....