Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Oddvar on April 09, 2018, 10:08:42 am

Title: 230 volt pilot light
Post by: Oddvar on April 09, 2018, 10:08:42 am

Hi, is there any tips on where to buy 230v pilot light for tube amp?

Title: Re: 230 volt pilot light
Post by: 92Volts on April 09, 2018, 10:19:04 am

Standard pilot lights are 6.3v, which is (usually) produced by your transformer for tube filaments regardless of your primary/wall voltage.

If you can't/don't want to do it that way... I'm not sure standard pilot lamp holders/sockets are rated for 230v even if you COULD find a suitable bulb.

You might want to look for a switch or power socket with a built in light. Whichever types are sold in your country would (hopefully) operate on 230v.

Title: Re: 230 volt pilot light
Post by: BruceF on April 09, 2018, 10:32:49 am

My sound city 200 has small neon lights on it.   Maybe something like this:

https://www.grainger.com/product/20C856?cm_mmc=PPC:+Google+PLA&s_kwcid=AL!2966!3!166588026673!!!g!81031655397!&ef_id=Wmn6MAAABvCHi9Gt:20180409153126:s

Title: Re: 230 volt pilot light
Post by: Leevi on April 09, 2018, 11:52:14 am

I don't know where you come from (Scandinavia?)


http://en.uraltone.com/electronic-components/leds-lamps-opto/lamps-e10-ba9/glimm-light-230v-ba9s-base.html


/Leevi

Title: Re: 230 volt pilot light
Post by: rake on April 09, 2018, 12:03:47 pm

I just ordered a 230v neon panel lamp from Mouser Electronics.

Title: Re: 230 volt pilot light
Post by: Oddvar on April 10, 2018, 08:52:25 am

On the Marshall 18 watt Hoffman layout the pilot light seems to be between the two 230v leads?  (I am from Norway)

Title: Re: 230 volt pilot light
Post by: Leevi on April 10, 2018, 09:23:28 am

Quote

(I am from Norway)

... neighboring country;) they deliver to Norway

/Leevi

Title: Re: 230 volt pilot light
Post by: kagliostro on April 10, 2018, 09:23:49 am

As pilot light do you mean only the lamp or all the unit (lamp + mount unit) ?

Franco

Title: Re: 230 volt pilot light
Post by: sluckey on April 10, 2018, 10:20:53 am

Quote from: Oddvar on April 10, 2018, 08:52:25 am

On the Marshall 18 watt Hoffman layout the pilot light seems to be between the two 230v leads?  (I am from Norway)

Hoffman's Stout is wired for 120VAC operation. The pilot lamp is a 120VAC neon lamp assembly available in his parts store. You can use a 120V neon pilot light assembly by putting a 220K resistor in series. But, since 240VAC neon pilot light assemblies are readily available, you should just use one of those.

Title: Re: 230 volt pilot light
Post by: kagliostro on April 10, 2018, 11:28:50 am

I was asking because is not difficult also to find this kind of unit (good if you have few space)

(https://i.imgur.com/0BtQsoP.jpg)

Franco

Title: Re: 230 volt pilot light
Post by: PRR on April 10, 2018, 12:56:26 pm

> where to buy 230v pilot light for tube amp?

You can steal one out of a toaster or other simple 230V appliance. Look inside and be sure it connects to the wall-cord, not on the far (low volt) side of a power transformer.