This amplifier for hearing aid was found in a 1968 documentation using an integrated of the time. The power is from a battery, the consumption of 1.65 mA and the power of about to 1 mW.
Pressing and releasing S, the capacitor C1 charges and discharge slowly through the oscillator...
We found this circuit in a 2005 Linear Technology manual. The circuit makes use of the LT6101 and...
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...