I found these unusual Target Module Short Arcs on Ebay from over in Israel. So you know that if one is good, 4 are better. I made an offer for 2, 3 or all 4 and they accepted the offer for 4. This is part of an 80's vintage TOW 2 Missle System Training System. I've never seen a "T" shaped SA lamp before with the extra "leg" being a separate ignitor electrode. Maybe the reason for it is to save wear on the Cathode from the repeated high Voltage strikes? The built-in ignitor is a problem in that it requires 400 VDC input in addition to 24 VDC input. Not easy to come by a 400 VDC, 3-5 Amp capacity power supply that I could also use to power the lamp once started. If using separate supplies for starting and running, then consideration has to be given to the two power supplies frying each other during ignition and startup. So I am guessing that I can ignite these lamps conventionally (between Cathode and Anode - not using the dedicated starting electrode and ignitor) with my universal arc lamp power supply. They are infra-red only with a curved window and a special coated rear reflector. Maybe I can adapt a clear lens? They weigh about 13 lbs and the manual says they are 8" tall. I just found the complete TM manual so will read up on it.
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