This circuit was found in a 90s American publication. The same configuration appears in several places on this site, obtained from different sources. The lamps can be replaced by LEDs.
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...