We found this circuit in a 1967 IEEE documentation. The circuit uses discrete components of the time based on the 1.13 MHz frequency used with oscilloscopes at the time.
April 2017 - The kit for STMicroelectronics STM32F7 32-bit microcontrollers is available from...
This traditional unijunction transistor configuration was found in a 1980s documentation. The functions are...
This different configuration for a crystal galena radio or modernized since a diode is used, has a...