This circuit was found in a Ferranti documentation from 1969. The transistors are common types of the company at the time. Smaller equivalents may be used. The output power is of the order of 150 mW.
The purpose of this circuit is to convert a short-lived pulse into a negative rectangular pulse. The...
This circuit using current components was found in an old documentation. It is a sequential circuit...
This circuit beeps when the sensor is triggered by the opening of the freezer door or other...