Definitely silly question

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CasperGriswoldBacon
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Definitely silly question

Postby CasperGriswoldBacon » Fri Feb 12, 2021 3:34 pm

I picked up a couple of old traffic lights with some other stuff I bought last week. I think they were originally on a base and powered by a 1950's battery. Should I be sticking AC or DC to get them to light up(if they work)?

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windcutter9f
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Re: Definitely silly question

Postby windcutter9f » Fri Feb 12, 2021 3:43 pm

They are old ASTRA traffic lights,they should have a base which held a flat 4 1/2v battery and a switch to control the bulbs,Don`t put 12v into them,you will blow the bulbs.

Ray.

CasperGriswoldBacon
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Re: Definitely silly question

Postby CasperGriswoldBacon » Fri Feb 12, 2021 3:48 pm

thanks windcutter. that's what I thought. So how would I test them? A battery? Edit. Sorry I meant there is not some way of running them off mains power rather than a battery?

4472
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Re: Definitely silly question

Postby 4472 » Fri Feb 12, 2021 5:16 pm

Only run them off the mains via a 4.5 volt transformer !!
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Bufferstop
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Re: Definitely silly question

Postby Bufferstop » Fri Feb 12, 2021 5:29 pm

Test them with a 4.5volt flashlamp battery, the flat type with long brass tangs on the top. For powering from the mains use a multivoltage dc adaptor set to 4.5 or 5V, they might even work down on 3V so try that first. Unless there's a switch on the back of the head you are a couple of wires short, if the battery was in the base one wire may be via the metalwork.
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CasperGriswoldBacon
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Re: Definitely silly question

Postby CasperGriswoldBacon » Fri Feb 12, 2021 5:33 pm

Cheers. The way they were loose from the bases suggested someone had modified them to run off something other than a battery but i'm pretty sure I haven't got a transformer with that voltage. Yeah the one wire confused me a bit

kebang
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Re: Definitely silly question

Postby kebang » Thu Feb 18, 2021 5:01 am

How about using an old phone charger as a supply?

muggins
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Re: Definitely silly question

Postby muggins » Thu Feb 18, 2021 7:18 am

Bufferstop wrote:Test them with a 4.5volt flashlamp battery, the flat type with long brass tangs on the top.


Can you still get those?


Bigmet
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Re: Definitely silly question

Postby Bigmet » Thu Feb 18, 2021 9:37 am

muggins wrote:
Bufferstop wrote:Test them with a 4.5volt flashlamp battery, the flat type with long brass tangs on the top.


Can you still get those?

Alternatively just lash together 3 AA's if you want to go the battery route to try this item. 'Everyone' has a pack of AA's to power their 17 remote controls, don't they?

CasperGriswoldBacon
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Re: Definitely silly question

Postby CasperGriswoldBacon » Thu Feb 18, 2021 9:10 pm

cheers for the battery links. I may be back asking about suitable bulb replacements 8)

muggins
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Re: Definitely silly question

Postby muggins » Fri Feb 19, 2021 8:30 am

My enquiry about availability of the 4.5v battery with the brass strip contacts came about because of a brainfart. I was confusing the EverReady 1289 with the ones which used to power the ubiquitous EverReady pushbike front lights until they quickly died, got forgotten about, leaked and ruined the lights. That one was of course 3v ... :oops:


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