We found this circuit in the December 1998 issue of Electronics Now magazine. RF transistors such as the BF494 or BF495 can be used. The circuit works at lower frequencies.
August 2017 - The PIC32MM microcontrollers of the Microchip 32-Bit Family can be obtained from...
This circuit was found in a 80s American documentation. The zener diodes determine the points of...
This circuit monitors the state of a 12 V battery and can be used directly with one, or even in a...