TDA audio amplifier circuits are produced in generally by Philips and SGS ... Its high current capability (up to 3.5 A) and the ability to drive very low impedance loads (down to 1.6 ohms) makes this ...

Piezoelectric tubular positioners that drive manipulators in scanning tunneling microscopes require high-voltage, low-current drive circuits. The circuit in ... Operational amplifier IC 1 provides ...