BENEFITS PULSE START Technology In metal halide lamps an arc passing between two electrodes in a pressurized tube causes various metallic additives to vaporize and release large amounts of white light. Traditional metal halide MH lamps use probe-start technology.

Metal Halide Lamp Wikipedia

But what sets the two apart.

Halide lamps using starting electrode. A starting probe electrode and two operating electrodes. Pulse start lamps produce the same desirable color characteristics as regular metal halide lamps. When it comes to metal halide lamps probe start and pulse start reign supreme.

Probe-start uses three electrical contacts. Starting Probe Electrode vs. This reduces tungsten evap-.

Early studies found pure tungsten electrodes unsatisfactory because of high evaporation rates. Like fluorescent lamps HID lamps require a ballast to start and maintain their arcs. About 24 of the energy used by metal halide lamps produces light 65-115 lmW making them generally more efficient than fluorescent lamps and substantially more efficient than incandescent bulbs.

Developed in the 1960s they are similar to mercury vapor lamps but contain additional metal halide compounds in the quartz arc tube which improve the efficiency and color rendition of the light. HID - Pulse Start. Normal MH Lamp Operation not pulse start 1 When the lamp is cold the halides and mercury are condensed on the fuzed quartz tube.

This starting electrode is located next to one of the main electrodes inside the arc tube. A metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides. The lamp of claim 1 where said heat source comprises a source of light for providing immediate light before start-up of light generation from said arc tube.

Statistical lag time component. Mogul Base - Position Oriented. One starting probe electrode and two operating electrodes.

Starting Probe Electrode vs. The present invention provides a metal-halide discharge lamp with a quartz discharge tube and an auxiliary or starting electrode which is maintained disconnected from the remote main electrode of the discharge tube whenever the lamp is running at its normal operating temperature. Metal Halide Pulse Start Ballasts Three electrodes are present in the arc tube of a probe-start MH lamp.

A an arc tube containing a vaporizable metal halide and first and second spaced electrodes. Lamps High intensity discharge HID lamps require auxiliary equipment Remote Mounting Ventures see Low Light Levels Traditional metal halide light bulbs use probe start technology which uses three electrodes a a starter electrode and two operating electrodes a in the arc tube to start the light bulb. This will lower the margin requirement forEN0 andEN0 so that for a given pulse amplitude and width pulse breakdown will occur.

Traditional Metal Halide lamps use probe-start technology requiring a standard Metal Halide ballast for operation. The method used to initially strike the arc varies. Product Description link to tech bulletin ANSI CodeBallast Ref.

A typical starting voltage and current waveform in a 75 W metal halide lamp with clean electrodes. Once the arc tube reaches its run. One starting probe electrode and two operating electrodes.

Traditional metal halide light bulbs use probe start technology which uses three electrodes a starter electrode and two operating electrodes in the arc tube to start the light bulb. When a mercury vapor or metal halide lamp is ener-. Probe start metal halide bulbs contain a special starting electrode within the lamp to initiate the arc when the lamp is first lit which generates a slight flicker when the lamp is first turned on.

Pulse start metal halide lamps are similar to traditional metal halide lamps but offer some different and unique benefits. It is a type of high-intensity discharge gas discharge lamp. Starting high-density discharge lamps Figure 6.

To start the lamp a discharge is created across a small gap between the starting probe electrode also called the starter electrode and the operating electrode. Electrode composition and control gear effects Sodium scandium metal halide lamps typically use electrodes containing 12 of ThO 2. Like all other gas discharge lamps metal halide lamps require auxiliary equipment to provide proper starting and operating voltages and regulate the current flow in the lamp.

A metal halide gas discharge lamp comprising. When the light bulb first turns on a discharge is created across a small gap between the starter probe electrode and the nearby operating electrode. The discharge tube of this lamp does not have a starting electrode see Figure 1.

METALARC PULSE START lamps use an arc tube with substantially higher fill pressure than standard metal halide lamps. When it comes to metal halide lamps probe start and pulse start reign supreme. Metal halide lamps require electrical ballasts to regulate the arc current flow and deliver the proper voltage to the arc.

By filling a small amount of tritium gas in the discharge tube or installing a miniature UV tube outside the discharge tube the lamp is easily started by the trigger. When the lamp is turned on current passed through the starting electrode and jumps the short distance to the main electrode see the diagram below this is aided by argon gas. The most common metal halide compound used is sodium iodide.

The lamp is called a Plus Start metal halide lamp. But what sets the two apart. A discharge is sent between the starting probe electrode and one operating electrode.

Mercury-vapor lamps and some metal-halide lamps are usually started using a third electrode near one of the main electrodes while other lamp styles are usually started using pulses of high voltage. However pulse light lamps lose less heat than their conventional peers due to a high-voltage ignitor instead of a probe electrode. Probe-start uses three electrical contacts.

Probe Start Metal Halide Lamps. Probe Start Metal Halide. The start-up electrode allows these lamps to be started us-ing a much lower start-up voltage than required by HPS lamps.

Lamp Starting Both mercury vapor and halide lamps use a separate starting electrode. For medium to high watt metal halide lamps where mercury pressures are typically on the order of 5 atmospheres. A discharge is sent between the starting probe electrode and one operating electrode.