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Concentrated arc lamp power supply

Concentrated arc lamp power supply

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Light Information

Light Information

Manufacturer:George W. Gates & Co.
Model Reference:GZ2U
Electrical
Wattage:2 watts
Voltage:115 volts
Physical/Production
Factory Location:USA

File information

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Filename:IMG_20191119_224822.jpg
Album name:SilverRay / Power supplies and ballasts
Keywords:Gear
File Size:644 KB
Date added:Nov 21, 2019
Dimensions:2464 x 1848 pixels
Displayed:43 times
Date Time:2019:11:19 22:48:22
DateTime Original:2019:11:19 22:48:22
Exposure Bias:1 EV
Exposure Time:1/70 sec
FNumber:f 2.65
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Focal length:3.7 mm
ISO:75
Make:samsung
Model:GT-I9300
Software:NJH47F
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James
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Nov 21, 2019 at 01:02 PM Author: James
Very interesting indeed. It seems to be a complex thing for what I thought was a simple lamp to operate. Do you know what is the schematic / principle of operation?

I see a nice old Selenium rectifier in the box, plus resistances and a transformer. But what is the lamp starter switch connected to and how is the discharge ignited?

I suppose the principle is that the transformer first steps down the mains to something closer to the lamp voltage. Then the selenium block creates DC - are there capacitors to smooth the ripple? There is probably also a resistor or other transfo tapping for the momentary light output booster. The ignition is maybe based on a small solid state tesla coil / flyback transfo. It would be great if you can see how that works! I have never lit any of my concentrated arc lamps due to this uncertainty.
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Nov 21, 2019 at 01:50 PM Author: SilverRay
I didn't redraw the circuit from box but I think that it's really simple device -- probably the main circuit has no transformer, only bridge rectifier and capacitors, connected to lamp thru big wire resistor.
Ignition is simple and smart -- in parallel to output circuit thru the button and other resistor connected the choke with big inductance. At the time then the button is pressed the choke is "charging", when the button is released, the high voltage pulse from choke goes to lamp.
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