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PhrazeMaster 9th January 2011 07:44 AM

Wiring SPST Switch with Neon Lamp
2 Attachment(s)
Hi gang,

I' ve got a lighted SPST switch I'm going to use on a microphone preamp I'm building. The switch has a built-in neon lamp. I'm confused because there's 3 terminals coming out the bottom of the switch. When I connect a DMM to terminals 1-2, I get continuity when the switch is on. Across terminals 1-3, or 2-3, there is no change when I flip the switch to either position.

I am attaching the datasheet for the switch. This will be the switch that energizes the power torroid, so it will be connected directly to mains. I don't want to make a stupid mistake.

Can anyone advise how to wire this correctly? I am attaching both the datasheet for the switch, as well as a crude layout/wiring diagram of the power supply. The "front panel switch" at the bottom of the diagram is the neon lighted switch in question.



Crude Wiring:
Attachment 204522

Switch datasheet:
Attachment 204521

PhrazeMaster 9th January 2011 08:05 AM

1 Attachment(s)
After more research, I ran across a post on another forum that suggested something like this. I did not indicate the neon lamp between terminals 2-3, but they are indicated on the datasheet. What do you think?



Attachment 204524

Spiny 9th January 2011 04:11 PM

Only one switch has the neon in the PDF the CRE22F2BBRLE

this is wired 1 to Live, 2 to torroid 3 to neutral, so the light comes on when the power is switched on, if you swap 1 and 2 the neon will stay on all the time... :D

your wiring is correct, don't forget to sleeve the contacts for safety :eek:

PhrazeMaster 9th January 2011 06:31 PM

Excellent; thank-you!!!

Would you see a problem using .25" crimp connectors with insulation on them, or is using crimp contacts a bad idea?

Thank-you again!

Spiny 9th January 2011 07:25 PM

I use 1/4" insulated crimps where the switch has them ;) reliable and safe when the top is off the equipment. :D

PhrazeMaster 9th January 2011 08:28 PM

Lol you're funny!


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