This circuit was obtained from an 80's Radio Electronics. The circuit decodes “scrambled” or sinusoidal encoded signals by providing an audio signal at the output.
Found in Burr Brown documentation from the 90s, this circuit applies to several operational ones....
This circuit has appeared on our site several times as a battery status monitor. In this...
This circuit was obtained from an English magazine from 1981. The magazine no longer exists, but...