Intermittent pulsing gas ignition system

A pulsing ignition system for gas fired devices having a source of electrical power, a burner provided with an outlet, and a fuel valve for controlling the flow of gas to said burner;

• said system comprising
• an electrical ignition element of resistance material adaptable for connection to said source of electrical power, and located in proximity to said burner outlet for igniting gas flowing thereto when said ignition element is energized and brought to a gas ignition temperature,
• electrical pulse generating means in circuit with said electrical ignition element, said pulse generating means having a predetermined on/off cycle and being adapted to provide energizing current to said electrical ignition element during said on cycle, of a value sufficient to energize and heat said electrical ignition element to a gas ignition temperature, and current of reduced value during said off cycle thereby permitting said electrical ignition element to cool during said off cycle,
• said pulse generating means including a gate controlled rectifier, and a flip flop circuit having its output connected to the gate of said gate controlled rectifier,
• and electrical control means connecting said fuel valve and said electrical pulse generating means for operation of said electrical pulse generating means when said fuel valve is open.