This very low power amplifier is designed by Amperex for hearing aids. It is based on TAA370 which is not an integrated circuit that can be found today.
Originally created to feed the filaments of a 12AX7 as an audio preamplifier to eliminate the...
This circuit has a scale of 0 to 2.56 V, but it can be changed by changing the values of the...
I found this circuit in an old documentation from 1982. The circuit can be assembled with the...