Found in Philips' 90s documentation, this small source can use modern transistors like the BD135 for TR4 and the BC series for the rest.
This xenon lamp circuit, also a stroboscope, was found in the May 1996 issue of Electronics Now...
This signal injector uses a single integrated circuit as an oscillator, producing rectangular...
This circuit takes advantage of the temperature variation of the component with the air flow that...