This circuit doubles the frequency of an audio signal, thus changing its timbre. The circuit was found in an Elektor from the 90s. The components are common today.
Found in a 1980s telecommunications documentation, the circuit presented acts as a product...
It can be obtained from Mouser Electronics new transceiver modules long range (LORA) Microchip...
Working with the previous circuits, this circuit resets after 1 second. The circuit is from Radio...