Using the 555 and 7400 this circuit was found in the September 1977 Radio Electronics magazine. The power supply must be made with a voltage of 5 V.
This circuit is ideal for recovering vinyl media with a linear response from the RIAA curve of the...
Some delicate sensors such as reed-switches and even sensors made with small metal plates do not...
This circuit was obtained in a manual for radio amateurs from 1975. It is a circuit that allows the...