This high input impedance circuit is suggested by Motorola's 1993 Linear Interface ICs. The power supply must be symmetrical. The circuit has a differential input.
Found in a 1967 manual, this circuit uses transistors from the era to generate a linear ramp...
This circuit is from Popular Electronics from October 0, 1981. The diodes can also be 1N4004 and...
This circuit was obtained in a Texas Instruments publication. It is a third-order filter with...