This circuit is from the 80's, using an integrated of the time. The circuit serves as a reference, as this type of dialing is no longer used today.
This circuit was obtained in a manual for radio amateurs from 1975. It is a circuit that allows the...
We found this circuit in a 1983 English magazine, but it can be easily assembled today, as all...
The fraction of watt amplifier shown can be powered by voltages from 6 to 9 V. It is not...