Found in a 1960s RCA manual, this circuit uses components from the era. For the indicated circuit R1 is 28ohm and R2 is 1 k.
Microsemi Le87536 Dual Differential Amplifier Microsemi / Microchip is making available through Mouser...
This circuit is from a Radio Electronics magazine from July 1979. It uses the well-known IC 7107, a...
This circuit was found in a 1976 technical publication. It is possible to obtain an 11 dB gain in...