This medium power circuit is from an English publication from 1989. The integrated circuits are of types that are still obtainable. The power supply must source at least 2A.
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We found this circuit in an American documentation from the 60's. The transistors are made of...
Unlike white noise, pink noise has a spectrum whose amplitude decreases with frequency. This...
This transmitter for the 7 MHz range, as we can assume by the number of turns of the coil, since the...