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.
We found this configuration in the ON Semiconductor thyristor manual. The triacs depend on the...
This circuit was found in an old documentation. It converts DC voltages and its maximum current...
This circuit makes use of comparators and common operational amplifiers, having been found in...