This circuit for VCR recording heads was found in the February 1990 issue of Radio Electronics magazine. The circuit is use do observe signal in an oscilloscope.
Found in Radio Electronics from the 90s, this circuit is based on the 555 directly feeding a small...
This 1 MHz oscillator was found in an Electronics World of 1969. The circuit uses a...
This circuit was found in a 1966 General Electric documentation. The circuit makes use of PUTs...