Author Topic: Can a MV lamp be ballasted by a resistive dimmer?  (Read 832 times)
Binarix128
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Can a MV lamp be ballasted by a resistive dimmer? « on: July 10, 2019, 06:01:28 PM » Author: Binarix128
What happen if I try to ballast a 220V 50Hz 100W MV lamp in a resistive dimmer? Can work or the lamp will blow up?

My current is 220V 50Hz.
The dimmer is max. 100W 220V 50Hz.
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dor123
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Re: Can a MV lamp be ballasted by a resistive dimmer? « Reply #1 on: July 10, 2019, 08:19:35 PM » Author: dor123
I think a resistive dimmer can't ballast MV lamp.
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Re: Can a MV lamp be ballasted by a resistive dimmer? « Reply #2 on: July 10, 2019, 09:44:05 PM » Author: Medved
No. The dimmer does not limit the current, it is just chopping it in time, so whatever current the load draws, it is let to draw for only fracrion of the time (tge exact fraction is then the dim level).
With only a dimmer and a discharge in the circuit, you have no current limitation, so the current would just be some fraction of an "infinite" (very large,very poorly controlled), so anything even close what the lamp needs or even tolerate...
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