This circuit is from the 1992 Radio Electronics Handbook. The components used are from the period, with emphasis on the 2-digit display driver.
The traditional circuit was taken from a French magazine Radio Plans that no longer exists but can...
March 2017 - Microchip's new 8-bit PIC16F15354 microcontrollers can now be obtained from Mouser...
Found in a 1980s telecommunications documentation, this balanced modulator circuit uses...