This circuit is from a Radio Electronics from August 1992. The transistor used allows the control of motors up to about 5 A. It must be equipped with a heat sink.
This circuit is connected to the sum key of a common calculator. Adjusted to produce a pulse per...
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
This oscillator was found in a 1967 General Electric documentation. The UJT is P-channel, an unusual...