Electronic switching device

摘要

A feed unit (1) connected to the mains supplies the electronic switching device (20) with the required voltage. With the onset of dusk, a photocell (2), for example an LDR resistor, starts to conduct and a random number generator (3-5) consisting of a clock (3), a random pulse generator (4) and counter (5) begins to run. The random number generator (3-5) switches at aperiodic intervals a flip flop circuit (6) which switches the loads (13) on and off via a relay driver (7). The loads (13) are, in particular lamps, lights, radio, television or magnetic tape devices. The device is used for burglary protection by simulating the presence of a person in an empty residence. <IMAGE>