This resistance meter was found in an English documentation from 1989. The operational amplifier admits an equivalent and the transistor can be a BC558 or BC559.
August 2017 - Mouser Electronics has already for dispatch Microchip MIC28515 Controlled Regulators for...
This circuit was found in a 1978 English magazine. It is a configuration that aims to select the...
Found in an Electronic Design from the 90's, this circuit simulates a 100 W resistor. The power...