Found in Unitrode documentation, this oscillator uses some unusual components today such as PU and the 3 M potentiometer. The power can be made with voltages around 15 V.
This receiver is from European documentation from the 90s. The integrated circuit is uncommon, and the coil...
When S1 is closed, the L1 lamp turns on and the L2 lamp turns off. The circuit is powered...
The circuit shown in the figure modulates an infrared beam with a sinusoidal signal generated by a...