We found this circuit in a Hands-On Electronics from the 90s. The circuit must be connected to an external amplifier. Frequency control is capacitive, using an antenna for this purpose
Found in an old Raytheon transistor manual, this 4-scale voltmeter has an accuracy that depends on the...
This circuit was obtained from a 2005 Linear Technology application manual. The circuit is...
August 2017 - The PIC32MM microcontrollers of the Microchip 32-Bit Family can be obtained from...