Christmas tree bulbs for my Carver dial lights - diyAudio
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Old 15th June 2014, 01:22 AM   #1
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Location: Mar del Plata, a BIG seasonal getaway city, can see the Ocean from our residence.
Default Christmas tree bulbs for my Carver dial lights

Well my CFM-15cb Carver finally blew the panel lamps. I know they're in series. I figured one is blown, so I'll take the good one & measure it...& see if it matches a Christmas tree bulb. If it's less & doesn't draw so much, all the better as a sub-voltage will keep it alive longer. So dusty inside!!



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Old 16th June 2014, 03:12 PM   #2
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Christmas tree bulbs are LED's now. They drop typically 1.3 v. You need to set the resistor to draw about 10 ma. Many such replacement bulbs have an internal resistor already, so you have to take a power supply and an ammeter to find out what is in there.
The white ones may drop more voltage as they can be several junctions in series.
Some circuits can pick up noise from the sharp edge of the semiconductor junction. Depends on how close the LED is to the high gain circuit points.
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