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Author Topic: Surface Mount Diodes/LEDs  (Read 1015 times)

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Offline Bealman

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Re: Surface Mount Diodes/LEDs
« Reply #15 on: October 01, 2019, 08:34:18 AM »
Thanks, buddy, will do.  :thumbsup:
Vision over visibility. Bono, U2.

Offline Railwaygun

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Re: Surface Mount Diodes/LEDs
« Reply #16 on: October 02, 2019, 07:20:42 AM »
Shop details here

https://laisdcc.com/

https://laisdcc.aliexpress.com/store/2977030

Or email stanley@laisdcc  for a local stockist
« Last Edit: October 02, 2019, 07:23:11 AM by Railwaygun »
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Offline geoffc

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Re: Surface Mount Diodes/LEDs
« Reply #17 on: October 02, 2019, 09:34:22 AM »
Available in the UK from CM3Models either direct or via eBay

Geoff

Online ntpntpntp

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Re: Surface Mount Diodes/LEDs
« Reply #18 on: October 02, 2019, 10:15:38 PM »
Just a quick heads-up to those who've bought one of the resistance boxes I mentioned:  I had the back off mine just to have a nose about how it's made.  I'd had visions of proper multi-pole rotary switches, but it's just copper tracks and SMD resistors with wipers on the selector knobs.   That's all fine, except mine seems to be plastered with way more grease than it needs, and I also found a few strands of stuff embedded in the grease.  These seem to be from where the fibreglass PCB was cut, but at least one strand was copper not fibreglass and was causing a short  so I managed to blow a set of LED lights I was working on  :censored: 

Might be worth having the back off yours if you've bought one and just checking it over?






« Last Edit: October 02, 2019, 11:55:48 PM by ntpntpntp »
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Offline Bealman

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Re: Surface Mount Diodes/LEDs
« Reply #19 on: October 02, 2019, 11:49:55 PM »
@Malc of this parish had the same problem. He may like to comment on it.

Mine arrived on Monday, and the first thing I did was take it apart. Not impressed!

I have several opinions about this unit, and am going to write a review in the electronics section when I get time... hopefully today.  :beers:
Vision over visibility. Bono, U2.

Online NinOz

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Re: Surface Mount Diodes/LEDs
« Reply #20 on: October 03, 2019, 03:42:21 AM »
...
I'd had visions of proper multi-pole rotary switches, but it's just copper tracks and SMD resistors with wipers on the selector knobs.
I was expecting to see similar, multi-position single pole with 1/4w resistors hanging off each position.  However should work ok until the wipers cut/wear away the copper pads.  I doubt that I will reach that many operations.
Mine has been ok but I just initially checked each position with DMM.  Will have to open and check for any possible stray pieces that could move and short.
Thanks.
To be called pompous and arrogant - hell of a come down.
I tried so hard to be snobbish and haughty.

| Carpe Jugulum |

Offline Bealman

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Re: Surface Mount Diodes/LEDs
« Reply #21 on: October 03, 2019, 05:30:47 AM »
Mine arrived on Monday and I am currently writing a review of it in the electronics section.
Vision over visibility. Bono, U2.

Offline themadhippy

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Re: Surface Mount Diodes/LEDs
« Reply #22 on: October 03, 2019, 06:58:40 AM »
Little  tip for using  resistance boxes,when working up in value always go from 9 to 19,then back to 10,if  not you risk ended up with 0 ohms across the terminals which might let magic smoke escape
Don't fart before your arse is ready

 

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