This circuit is from a 1980s Signetics documentation. The circuit separates the modulation signal from a carrier. The used components are not common today.
The circuit presented in the figure is an amplifier for stereo sources with the Maxim MAX9723...
This circuit was obtained in an old English magazine (TSI) 1998 and consists of a Schmitt trigger...
Fluorescent lamps in the range from 4 to 40 W can be powered on from cells or batteries. The lamp...