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 can switch signals in the 3.5 to 30 MHz band. We found it in a QST magazine from the...
This is the receiver for the CB17133E. Its main feature is that it uses only transistors. The...
This is another one of the many versions of Nicad battery chargers that we have on the website and in...