This circuit was found in an American documentation from 1969. Indications of the used transistors are not given, but general-purpose types can be tested.
With this circuit it is possible to control an operational amplifier so that it switches an input...
This circuit consists of a traditional amplifier version with complementary output using BD series...
This circuit was obtained from a Texas Instruments 1985 document. The circuit is powered by 1.5 V...