This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating amplifiers with the same characteristics and the power supply must be symmetrical.
April 2017 - Microchip's new PICLF153 microcontrollers that already incorporate analog and...
With the precision given by the crystal this circuit provides signals of several frequencies for the...
The transistors of this circuit found in an English 1980s documentation may be the modern BC548...