This circuit was obtained in a 1999 English magazine. We can easily assemble it with a BD136 or even TIP32 transistor and its supply can be made with voltages from 9 to 12 V.
Rechargeable Nicad batteries type AA, C or D can be recharged with this circuit, which is nothing...
The figure circuit is a modulated tone generator, with the effect of interval beeps. The frequency of...
This circuit, very traditional, was found in a practical Elettronica of 1977. The source cannot be of...