Found in American documentation from the 1980s, this circuit has a throughput of 700 Hz and a flat response of 400 to 500 Hz, with crystals of 3 MHz. Crystals of 2 to 15 MHz can be used.
September 2017 - Texas Instruments PCM186x and PCM186x-Q1 Audio ADCs can be found at Mouser...
This circuit uses a dual-gate MOSFET, a rare component today. We found it in American...
This JFET amplifier was found in documentation from 1958. The circuit has voltage gain of 4 and 10...