We found this receiver on a single chip in the 1976 Siemens integrated circuits manual. The circuit is of the super heterodyne type using ceramic filter in the IF.
Using the HA2400 this circuit can generate signals of a few megahertz depending on R and C. The...
We found this amplifier for hearing aids or hearing aid using only transistors in a documentation from the...
This circuit drives a load with a delay given by the RC timing components. The circuit is from...