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.
In the figure we have an application for NLAS5113, a new device from on Semiconductor...
This circuit, which draws numbers from 00 to 99, was found in an Italian magazine from 1974, but...
The filter shown in the figure, suggested by Motorola, operates at a cut-off frequency of 1 kHz,...