Electronic circuit for an automatic control device in a hot-air heating system

摘要

An electronic circuit for an automatic control device for a hot-air heating system, which enables a previously selected number of starting cycles and, in the event of ignition, continuous operation of the hot-air heating system, the heating device containing a combustion sensor and being controlled by an intermediate control stage. The output of the extinguishing (turn-off) circuit (3) is connected to the monitoring input of the digital counter (2), whose outputs (Q(i)) and (Q(i+1)) are connected to the inputs of the logic gate circuit (6) which is in turn connected, on the output side, to the first input of the logic gate circuit (7). The output (Q(i+2)) of the digital counter (2) is connected to the inputs of the logic gate circuit (5), which is in turn connected on the output side to the second input of the logic gate circuit (7) whose output is connected to the first input of the intermediate control stage (8), the output (Q(i+n)) of the digital counter (2) being connected both to the monitoring input of the pulse generator (1) and to the inputs of the logic gate circuit (4) which is connected, on the output side, to the second input of the intermediate control stage (8). <IMAGE>