We found this circuit in an 80's manual. The same configuration can be adapted to make use of modern operational amplifiers. The power supply is symmetrical.
This circuit was found in Italian magazine (1988), but can be mounted with ease even with the...
This circuit was found in an American 1980s documentation. The components are current but most...
This circuit of old American documentation (1965) can be applied to any transistor. | Clique na...