This power supply is designed for 30W deuterium lamps (D2 lamps).
Model No. MD330 can be used for H2 (Hydrogen) and He (Helium) lamps, too. Just for Hydrogen lamp, output current can be modified to 450mA.

• High stability with high performance current control
• Compact size by using switching type power supply
• Workable with DC24V
• Insulated input for lighting start and output for lighting monitor are available, and those can be easily connected with logic IC.

Mode No.
  MD310 - for 2.5V
  MD330 - for 10V

External dimensions and connector pin assignment

Connector		No.	Function
CN1	Power	1	DC24V 1)
		2	GND
CN2	External input/output	1	Lamp on/off control 2)
		2	GND for above
		3	Lighting status in operation 3)
		4	GND for above
CN3	Lamp output	1	Anode
		2	Shield (electrode support)
		3	Filament
		4	Filament/Cathode

1) Use power of 70W or more due to rush current
2) About 10mA current runs at 5V operating voltage
3) 390Ω of open collector output

Specifications

Based on 30 minutes after lighting lamp at the temperature of 25°C±1°C

Parameters				Requirement
Input			Input DC voltage	24±2.4V
			Input power during lighting	Max 50W
Output			Output voltage before lighting	Typ 200V
			Output voltage during lighting	Typ 80V
			Output current	300±15mA
			Fluctuation of current	Typ 0.005％
			Drift of current	Typ ±0.02%/h
			Pre-heating	25±5sec
			Trigger voltage	Min 600V
Filament	For 2.5V MD310	Pre-heating	Voltage	2.5±0.2V
			Current	Typ 4A
		In operation	Voltage	1±0.1V
			Current	Typ 1.8A
	For 10V MD330	Pre-heating	Voltage	10±0.5V
			Current	Typ 1.2A
		In operation	Voltage	7±0.4V
			Current	Typ 1A
Cooling method			Air cooling	0.3 cubic meter/min
Operating ambient temperature				0 to 40°C
Storage temperature				－10 to 60°C
Operating & Storage humidity				Max 80%Rh
Weight				250g