This driver for audio signals using the TAA435 integrated circuit was found in Philips 1968 documentation. The integrated circuit is difficult to obtain today.
This preamplifier circuit for turntable cartridges was found in the March 1994 issue of...
We found this common application of the 741 operational amplifier in a 1977 documentation. The...
By pressing PB, the capacitor is charged by firing a triac that keeps on driving for a time that...