This 600 kHz circuit is designed to locate a lost boat anchor. The circuit has a range of up to 10 meters. The transistor admits equivalent.
In the figure we show a trigger circuit for triacs with a unijunction transistor. The circuit is...
The oscillator in the figure has its frequency determined by the crystal. The indicated value is...
This circuit was found in the November 1959 Radio Electronics magazine; The circuit generates a...