This driver for audio signals using the TAA435 integrated circuit was found in Philips 1968 documentation. The integrated circuit is difficult to obtain today.
The figure shows how to use an oscilloscope for diode test. The circuit presents the...
We found this circuit in the October 1991 issue of Radio Electronics magazine. The circuit uses...
This circuit was obtained from an English magazine from 1977. It is a toy musical instrument that...