The integrated circuit used is uncommon today. The circuit was obtained in the Philips integrated circuits manual of 1990. The reference voltage-range is from 0.5 to 9.0 V.
This circuit in a receiver that allows the capture of distant stations with short waves. The...
This simple circuit of low power with an LM386 includes the highly sensitive audio preamplifier...
This circuit is from old documentation but can be applied to modern equivalent components. The...