This circuit is from an Electronics World of 1968. The transistors are of the time and the power is supplied with a voltage of 40 V. The circuit is high fidelity.
This audio signal relay was found in an American 1980s documentation. The relay is in accordance...
September 2017 - Texas Instruments PCM186x and PCM186x-Q1 Audio ADCs can be found at Mouser...
The figure shows how to obtain a capacitance digitally with 4066 switches. The table shows the...