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48VDC bulbs needed
I have a 48V DC system installed in the 1990s, but upgraded periodically. My lighting runs off the solar panels or the batteries. My problem is getting good light bulbs that can handle this current. I originally used 4-pin flourescent bulbs with an adapter made in Montana. The adapters burned out faster than the bulbs.
Now I am using bulbs from 12V Monster in China. They make LED bulbs that can handle 25-80 volts. My issue with them is the lousy shortcut manufacturing. I find the bulbs do not last long, some 30 mons, others 2 months.... but never more than 3 months.
Performing a forensic on a non-working LED bulb. I disassembled the bulb. The bulb is wired with two 22g strand conductors from the LED panel, terminated in a control module. The module has two stranded conductors, one to the center contact on the edison base, and the other is stripped back 1/2 inch and pinched between the edison base metal and the plastic bulb housing.
As an experiment, I manually tested the broken bulb I had disassembled, on a 48VDC source. The LEDs illuminated to full brightness.
12V Monster is not soldering the negative conductor to the edison base similar to US manufacturers. It is obvoius that the stranded conductor heats up and either melts into the plastic housing, breaking the electrical connection, or the strands burn back one by one, until no contact remains. I contacted them two years ago when I discovered this issue and even sent them pictrues of how their bulbs were failing, and how I repaired a bulb.
Well, after two years, they are still short-cutting the negative conductor by pinching it between the plastic base and the metal edison base.
Can someone point me to a source for 48VDC bulbs of any type, LED, Flourescent, or Incandescent? I am really tired of paying $6 for a bulb that lasts maybe 250 hours of use.
Thank you
Now I am using bulbs from 12V Monster in China. They make LED bulbs that can handle 25-80 volts. My issue with them is the lousy shortcut manufacturing. I find the bulbs do not last long, some 30 mons, others 2 months.... but never more than 3 months.
Performing a forensic on a non-working LED bulb. I disassembled the bulb. The bulb is wired with two 22g strand conductors from the LED panel, terminated in a control module. The module has two stranded conductors, one to the center contact on the edison base, and the other is stripped back 1/2 inch and pinched between the edison base metal and the plastic bulb housing.
As an experiment, I manually tested the broken bulb I had disassembled, on a 48VDC source. The LEDs illuminated to full brightness.
12V Monster is not soldering the negative conductor to the edison base similar to US manufacturers. It is obvoius that the stranded conductor heats up and either melts into the plastic housing, breaking the electrical connection, or the strands burn back one by one, until no contact remains. I contacted them two years ago when I discovered this issue and even sent them pictrues of how their bulbs were failing, and how I repaired a bulb.
Well, after two years, they are still short-cutting the negative conductor by pinching it between the plastic base and the metal edison base.
Can someone point me to a source for 48VDC bulbs of any type, LED, Flourescent, or Incandescent? I am really tired of paying $6 for a bulb that lasts maybe 250 hours of use.
Thank you
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