This circuit is suggested by National Semiconductor in its Linear Applications Handbook. The LM3909 integrated circuit consists of a very low consumption oscillator with a power supply of 1.2 V.
This circuit was obtained from an American 80's documentation. The operational ones can be...
This circuit uses two Raytheon RC4558 operational amplifiers that are similar to the 741. The...
This configuration for 3 A currents with a maximum input voltage of 30 V appears elsewhere on this...