![]() The choke limits the peakĬurrent and serves to smooth the DC. The balancing reactance schematically is a iron core choke. Would be 1.4 *110 or about 154v volts DC. If the charger is connected to 110 volts AC, the peak output into a light load ![]() "how do I achieve the 150v output indicated on the equipment nameplate? " Last edited by EricS on Apr 12:34 pm, edited 2 times in total. I'm confused - how do I achieve the 150v output indicated on the equipment nameplate? Unless the voltage specs for the bulbs in the chart above are not as meaningful as they are claimed to be. The nameplate on my Handy Charger indicates up to 4A (OK, this one is easy - two bulbs in parallel add their current capability) and up to 150v DC. Other Westinghouse product literature I've found indicate this same bulb as being optimized for a 1.5A load at 30v DC. According the the chart above, it's a 2A 75vDC bulb. Two of these bulbs were also used in the Westinghouse telephone battery charger. My charger came with a Westinghouse S-289415-B bulb in it. Likewise, GE 189049 is an alternate to Westinghouse Rectigon 289416 (both 6A 90v, though the schematic above says 125v for these bulbs.) It also looks like GE 189048 is an alternate to Westinghouse Rectigon 289414 (both 6A 60v) The meter for the front panel cleaned up nicely as well. I didn't want to disturb the plates any more than necessary - I just cleaned up the outermost layer. There is some minor rust between a few of the transformer plates, but I didn't make any effort to remove it. How do I determine what the "proper" current values are? What numbers do I multiply together to find the "target" reading? I can determine voltages of the +A and +B windings (I'll be able to actually measure them once I get things back together). I am still a little confused about the impedance voltage. I suppose one way to identify them on ebay is to ask the seller if it fits into a standard lamp socket. ![]() I wonder how universal the 2.5v filament is, or does filament voltage vary like that of more "modern" vacuum tubes.
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