We found this circuit in the September 1992 issue of Radio Electronics magazine. It can be triggered by any signal above ½ Vcc, where Vcc is the supply voltage.
This circuit was found in a 1968’s General Electric documentation. The circuit uses components from...
The circuit shown in the figure consists of an amplifier for stereo sources with Maxim's MAX9723...
This simple preamplifier with two transistors may be used in a wide range of applications. The...