Microprocessor-controlled gas appliance utilizing a single electrode spark ignition system and a pulse width modulated proportional valve

摘要

The present invention is a gas appliance comprising a burner, a conduit, a control circuit, and a valve. The burner is adapted to burn a fuel and producing a flame. The conduit is connected to a source of the fuel and adapted to convey the fuel to a burner. The valve is interposed on the conduit between the source of fuel and the burner and is in electrical communication with the control circuit. The control circuit is adapted to provide a pulse width modulated signal to the valve whereby the valve provides a substantially linear flow rate of fuel to the burner.