This circuit for communications receivers was found in the January 1974 issue of Radio Electronics magazine. The transistors are Japanese types of the time, as the circuit was part of equipment of that origin.
This simple circuit can make use of any general-purpose transistor. The power comes from the...
This system of sequential lights for shop windows, discotheques, stores, does not use integrated...
This circuit was found in an American documentation of the 90s. Optical resources with the LDR as a...