Employing the XR2206 IC, this circuit was found in the May 1977 issue of Radio Electronics magazine. The formula next to the diagram gives the component values as a function of frequency.
This circuit was found in a 1966 General Electric documentation. The circuit makes use of PUTs...
This circuit uses na Unijunction Transistor (UJT) to produce a modulation tone for several...
This circuit causes one LED to light up if the voltage falls below the value set in R3 and the...