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This variable frequency oscillator was found in an old American documentation. Transistors allow more modern equivalents and coil data are found next to the diagram for several frequency bands.
Suggested by Philips in 1966 documentation, this limiter can be found elsewhere on this website....
March 2017 - Microchip's new 8-bit PIC16F15354 microcontrollers can now be obtained from Mouser...
This circuit was obtained from a Poptronics in June 2001. The magazine no longer exists, but the...