Only for reference this is a circuito f a commercial receiver of the year 1958. The circuit uses coils and transformers hadr to find in our days. The circuit is destinated to receive MW stations.
This is stage is transformer coupled and was found in na old publication of the year 1958. The...
This Hartley-type audio oscillator was obtained in an earlier 1973 publication. It can be...
Two LEDs are used in this TTL circuit. Frequency is given by C1 and C2. Power supply must be a 5 V...