Wiring SPST Switch with Neon Lamp

PhrazeMaster · 9th January 2011, 07:44 AM

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.

Thank-you,

Mike

Crude Wiring:
Mains-Switch-Scheme.jpg

Switch datasheet:
Power Switch CR_Series.pdf

PhrazeMaster · 9th January 2011, 08:05 AM

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?

Thanks,

Mike

Mains-Switch-Scheme2.jpg

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...

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

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.

PhrazeMaster · 9th January 2011, 08:28 PM

Lol you're funny!

Thank-you!

9th January 2011, 07:44 AM	#1
PhrazeMaster diyAudio Member Join Date: Sep 2006	Wiring SPST Switch with Neon Lamp 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. Thank-you, Mike Crude Wiring: Mains-Switch-Scheme.jpg Switch datasheet: Power Switch CR_Series.pdf

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9th January 2011, 08:05 AM	#2
PhrazeMaster diyAudio Member Join Date: Sep 2006	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? Thanks, Mike Mains-Switch-Scheme2.jpg

9th January 2011, 04:11 PM	#3
Spiny diyAudio Member Join Date: Feb 2008	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... your wiring is correct, don't forget to sleeve the contacts for safety

9th January 2011, 06:31 PM	#4
PhrazeMaster diyAudio Member Join Date: Sep 2006	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!

9th January 2011, 07:25 PM	#5
Spiny diyAudio Member Join Date: Feb 2008	I use 1/4" insulated crimps where the switch has them reliable and safe when the top is off the equipment.

9th January 2011, 08:28 PM	#6
PhrazeMaster diyAudio Member Join Date: Sep 2006	Lol you're funny! Thank-you!