This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz to 100 kHz and modern equivalent components can be used. The circuit is from Ferranti.
This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old...
April 2017 - Mouser Electronics already has in stock the new HMC8400, Analog Devices low noise...
This circuit was found in documentation by Linear Technology from the 90's. The circuit makes...