Control circuit for electronic load determining lamp switching operation

摘要

An electronic load (22) emits output signals not only for the preheating of an earlier state, for the instantaneous discharge and for the maintenance of the discharge in a lamp 921), but also for a control circuit. A multiplier (23) receives signals from the load and gives out a value proportional to the product. There is a preheat control circuit (24) for the lamp. An adder (25) sums the output signals of the multiplier and the preheat control circuit. Another circuit determines the input voltage to the load. A new-start and time control circuit (27) sends out a signal to the preheat control circuit and receives signals from the adder via a resistance block as well as from the circuit determining the load voltage.