This circuit was found in a 1968 Hughes documentation. The transistors are from that time. The coil is for the medium or short-wave range.
This turntable filter was found on an 80's Elektor. The circuit makes use of operational features...
This simple half-wave control using an SCR, which may be TIC106, has been obtained from a US...
This circuit uses common components at the time of its publication in the 1980s. The circuit can be...