This circuit was found in the July 1969 Radio Electronics magazine. The circuit controls resistive loads and universal motors with power according to the SCR used.
We found this relaxation oscillator in a 1967 General Electric documentation. The frequency is given...
This circuit was found in the September 1984 issue of Radio Electronics magazine. The circuit has...
Although the BD135 transistor is not specifically for RF applications, some of them can easily...