This circuit was found in an Electronic Design from 1964. The components are from that time and can be replaced by equivalents. The modulation ranges from 0.25 to 0.75 of the 20 kHz pulses.
November 2016 - NXP ARM Cortex microcontrollers for serial interfacing applications, NXP 32-bit...
This simple earphone receiver was sold in the 1960s in Japan. The circuit uses a single germanium...
Rumble is a low frequency rumble that occurs with turntables. If the reader recovers recordings on...