Two sensors are used in this simple remote-control circuit, one to switch on and one to switch off the relay. The circuit is from 1986 documentation. The transformer has 12 V of secondary.
In the figure we have a modified multiplier circuit that can operate with the sextuplicator with...
This amplifier with an OTA has a gain of 40 dB. The power supply must be symmetrical. Found in...
This circuit uses a diode as a sensor, activating a relay when a certain temperature is reached. The...