We found this circuit in a 1977 National Semiconductor Databook. The circuit can use other FETs like the BF245 and has an input impedance of 10 megohms. The circuit gain is unitary.
Excitation of power loads with a T-MOS transistor (Motorola) using TTL-LS (Low Power Schottky) logic,...
This circuit is from the November 1974 issue of Radio Electronics magazine. The capacitor...
Found in American documentation from the 90s, this CMOS circuit detects the source of a signal and can...