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 circuit was obtained from a Philips documentation from 1970. It can be built on modern...
The modified Hartley oscillator seen in the figure can generate signals ranging from 3 MHz to 10...
This circuit was found in an American publication from the 1970s. The circuit uses components from...