This variable voltage regulator circuit has a power stage capable of supplying currents up to 1 A. The power transistor must be equipped with a heat sink.
Found in an English Maplin documentation from 1983, this circuit generates separate frequency...
This circuit uses a piezoelectric transducer to produce sounds like a buzzer. Frequency is...
Guitar preamp (CB22146E) Found in an English publication from 1989, this circuit uses a still...