Question: what is the difference between metal halide and pulse start metal halide?
Answer: Traditional metal halide (MH) lamps use probe-start technology. ... Pulse-start MH lamps do not have the starting probe electrode (Figure 2). Instead they have a high-voltage ignitor that works with the ballast to start the lamp using a series of high-voltage pulses (typically 3 to 5 kilovolts).