This circuit was found in a 1967 General Electric manual. It shows a SCR control with unijunction and zener diode. The triac depends on the controlled load.
This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The...
This circuit was found in a 1987 magazine. It measures monitors the heartbeat through electrodes. The...
In the figure we show a widely used configuration for the CA3140. The power of this circuit can be...