Where to buy an A4 Neon bulb for Gates SA-39?

supafuzz · Post by **supafuzz** » Thu Aug 06, 2015 5:15 am

Where to buy an A4 Neon bulb for Gates SA-39?
thanks

emrr · Post by **emrr** » Mon Aug 10, 2015 5:38 am

I've always gotten them from Mouser. After watching them fail over the years, sometimes quickly, I've changed to an appropriate Zener diode, with much better life, regulation, and meter drift. I've done this with half a dozen units at this point.

supafuzz · Post by **supafuzz** » Mon Aug 10, 2015 7:58 am

thanks Doug.
I found some but what is the part number for thee zenier? also does that need any modification?
And if the bulb is out is it ok to run the compressor??

emrr · Post by **emrr** » Mon Aug 10, 2015 10:33 am

1N4758A-TP

The regulated power section will have no reference, so you might blow up your meter if it slams due to lack of power stability. I wouldn't do it.

http://groupdiy.com/index.php?topic=36432.0

supafuzz · Post by **supafuzz** » Mon Aug 10, 2015 11:59 am

ok thanks I'll wait until the bulbs arrive.

supafuzz · Post by **supafuzz** » Mon Aug 10, 2015 12:02 pm

ok I thought this was a bulb...I'm not electronically savvy so where does the diode go?
does it replace the bulb?

emrr · Post by **emrr** » Wed Aug 12, 2015 7:06 am

It replaces the bulb. You can just barely see it soldered to the bulb holder inside the units in 2 different units pictured in that thread link. Orientation must be correct, in doubt confirm ground side for diode. Bigger pic here:

https://farm5.staticflickr.com/4091/508 ... 4d36_o.jpg

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Where to buy an A4 Neon bulb for Gates SA-39?

Where to buy an A4 Neon bulb for Gates SA-39?

found some

thanks

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