12v power supply sorted

[96terrano]

well i have been wanting a 12 volt power supply in my room for years, think i even said here ages ago....anyway, i wanted it for running car parts instead of going out to my 4x4 all the time, have been experimenting with old step-down transformers from random electronics, PSUs etc and nowt had the required AMPs well, i have finally sorted my problem.....and it's simple, got the old 100AH battery that was from my terrano, heaved it up to my bedroom connected a trickle charger and a voltmeter, perfect, 12V power on demand in my bedroom:D when the battery gets low, i just connect the trickle charger, also, ill be mounting a volt & amp meter on the wall over the battery so i can keep an eye on it when in use

sorted:D


see it powering a jaguar radio with a Ford Maverick speaker connected:D

i will be sitting the battery in the corner of my room on a table, all neat tidy and out the way!



3753

[96terrano]

3754

[Fez_uk]

12v power supplies are cheap enough.

Also worth mentioning possible hydrogen from charging could potentially cause some issues?

[96terrano]

12v power supplies are cheap enough.

Also worth mentioning possible hydrogen from charging could potentially cause some issues?

Aye, but theirs no power supplys thatll chuck out the right amps
And yes, that did cross my mind about hydrogen, but I have a extractor fan rigged up as I do spray painting, so its all well ventilated and no h&s risks

[Fez_uk]

How many amps do you need?

[96terrano]

How many amps do you need?

Minimum of about 60 possibly, what will a terrano sized starter motor take under no load?

[Thomas-the-Terrano2]

I would have batter and charger linked full time, but not venting in habited room,

perhaps could be in shed then a 12V cables run to room.

thinking when charge in situ in caravan, its sealed vents to outside not into interior,
you say no h&s but could be fun with house insurance if does go wrong. ie fire etc.

[edgerton19]

Vented lead acid on charge in a bedroom is not a good idea.

1) During charge some acid vapour will be released (large hole in carpet)
2) Hydrogen and oxygen are evolved towards the end of charge and can explode spreading acid over you and your bedroom (more holes in carpet and curtains).
3) If the battery gets shorted there is a very significant fire risk (and more holes in carpet).

If you need a 20A or 30A REGULATED power supply then they are available at reasonable cost. I manage most of my design and test with either a Farnell LT30-2A (twin channel adjustable 30V 2A) or a Farnell L30-5 (adjustable 30V 5A) both are fully regulated. My 12V transmitter power supply is rated at 13.5V 25A and is small (switch mode) and has ouput protection. Large batteries live in the garage.

[96terrano]

Vented lead acid on charge in a bedroom is not a good idea.

1) During charge some acid vapour will be released (large hole in carpet)
2) Hydrogen and oxygen are evolved towards the end of charge and can explode spreading acid over you and your bedroom (more holes in carpet and curtains).
3) If the battery gets shorted there is a very significant fire risk (and more holes in carpet).

If you need a 20A or 30A REGULATED power supply then they are available at reasonable cost. I manage most of my design and test with either a Farnell LT30-2A (twin channel adjustable 30V 2A) or a Farnell L30-5 (adjustable 30V 5A) both are fully regulated. My 12V transmitter power supply is rated at 13.5V 25A and is small (switch mode) and has ouput protection. Large batteries live in the garage.

Hmmm ok, thanks for that, in not to bothered about the carpet as its already got burn holes etc in it as all my room is is a car parts store and somewhere I test and build electronics and had a bed in it :lol but I know what you mean, thing is, I do not actually have a shed, these power supplys you're talking about, are they DC? As I really need somthing to mimic a 12v battery

[Deano400]

As said, lead acid battery in bedroom= bad idea.

Did you think about one of those cheap start n charge packs ?

They have a sealed battery in them plus are easily charged and the batteries inside them are designed to be cycled unlike a car battery which will soon die if you keep discharging it.

[Deano400]

just a really quick look on ebay finds this.

http://www.ebay.co.uk/itm/Car-Battery-booster-jump-start-compressor-12v-boat-van-portable-12-volt-power-/140990960129?pt=UK_Recovery_Tools&hash=item20d3b75201

I'm sure there's more and maybe cheaper

[96terrano]

just a really quick look on ebay finds this.

http://www.ebay.co.uk/itm/Car-Battery-booster-jump-start-compressor-12v-boat-van-portable-12-volt-power-/140990960129?pt=UK_Recovery_Tools&hash=item20d3b75201

I'm sure there's more and maybe cheaper

Christ, I forgot about those:doh:doh:doh:doh, theyll be ok to use inside I guess too?

[kitchenman]

http://www.maplin.co.uk/compact-battery-jump-starter-with-260-psi-air-compressor-624730

Does 300 amp, keep it charged or it will die:doh:doh:doh

[Fez_uk]

No point in even getting those jump starter batteries, just buy a small 7ah sealed lead acid battery as thats usually all thats in them.

How often will you use the higher amps? Rarely then you might aswell get a small 5-7a bench PSU and if you need higher amps go to the 4x4 or shed and use a big battery.

You may not mind burn holes in the carpet but what about your face/skin?

[firebobby]

Ryan, I thought you were living in Toby on your drive :confused:

[96terrano]

Ryan, I thought you were living in Toby on your drive :confused:

Not permanently, just when its warm weather:D

[96terrano]

No point in even getting those jump starter batteries, just buy a small 7ah sealed lead acid battery as thats usually all thats in them.

How often will you use the higher amps? Rarely then you might aswell get a small 5-7a bench PSU and if you need higher amps go to the 4x4 or shed and use a big battery.

You may not mind burn holes in the carpet but what about your face/skin?

Aye, not much in the high region, mostly just testing radios etc

[briggie]

just get or make a genny :augie

[96terrano]

just get or make a genny :augie

Aye, well, if you remember, I was going to make one but couldn't find a engine cheap:doh

[briggie]

60 amps is some serious current to be flying around ya bedroom ...... :eek:

[96terrano]

60 amps is some serious current to be flying around ya bedroom ...... :eek:

It's fine, its more a workshop if anything, even used a angle grinder up their a few times :augie

My bed is separate to where I do work

[briggie]

just curious what safety / fire precautions you have in place mate

[96terrano]

just curious what safety / fire precautions you have in place mate

I have 2 fire extinguishers, one co2 and another foam I think, flammable materials are kept high off the work area so no risk their, also, the main plug I use for testing/running electrical things had a breaker. Ohh and I'm in the process if rigging up a good extractor fan system

[Fez_uk]

just get or make a genny :augie

Won't that be a bit loud in a house? :doh

[briggie]

Won't that be a bit loud in a house? :doh

not with his radios :augie:lol:lol

[96terrano]

not with his radios :augie:lol:lol

Aye, my radio will muffle it :lol

[jims-terrano]

OK how about this solution. Make like a small kennel outside, place battery in there and run cables from charger and feed to bedroom from there. That way you can still use the battery and charge with no risk of spills or worse in your bedroom. If charger wires and feed wires are all good connections there shouldn't be any sparks. Use good fuses at battery end of all cables. Make a fused distribution board in your bedroom with multiple outputs all fused nice and safe.

This I'm sure will appeal to your sense of adventure and general playing:thumbs

[96terrano]

OK how about this solution. Make like a small kennel outside, place battery in there and run cables from charger and feed to bedroom from there. That way you can still use the battery and charge with no risk of spills or worse in your bedroom. If charger wires and feed wires are all good connections there shouldn't be any sparks. Use good fuses at battery end of all cables. Make a fused distribution board in your bedroom with multiple outputs all fused nice and safe.

This I'm sure will appeal to your sense of adventure and general playing:thumbs

Indeed it does:naughty will need some huge jump leads as my house is quite tall, not a bungalow

[briggie]

I like it jim :thumb2 , could even put 2 or 3 batteries in parallel to increase the enormous current available if required

[96terrano]

I like it jim :thumb2 , could even put 2 or 3 batteries in parallel to increase the enormous current available if required

Aye, that'll work as I'll just sit the battery under the kitchen window and have cables running up to my window and through

[jims-terrano]

I like it jim :thumb2 , could even put 2 or 3 batteries in parallel to increase the enormous current available if required

Better still Solar Panels and run the house lighting from 12v. Mind you I reckon someone on here will of done that already. Wonder who that is, the rebel that he is:rolleyes:

Ahh and don't forget for good measure a wind turbine

[jims-terrano]

Indeed it does:naughty will need some huge jump leads as my house is quite tall, not a bungalow

2.5mil twin and earth will sort low current supply no probs. As for any heavy load it still may be safer done outside.

[briggie]

Better still Solar Panels and run the house lighting from 12v. Mind you I reckon someone on here will of done that already. Wonder who that is, the rebel that he is:rolleyes:

cant wait till ryan passes his ham radio exams :augie

[96terrano]

cant wait till ryan passes his ham radio exams :augie

Aye, me neither:naughty havnt been doing much recently because I'm doing ne driving a lot:doh I have a busy life :lol

[spiderpig37]

Why not kit a shed out in garden and play about in there
Grinding spraying and what only knows going on in the bedroom you might find your self living in toby when ma and pa kick you out

[96terrano]

Why not kit a shed out in garden and play about in there
Grinding spraying and what only knows going on in the bedroom you might find your self living in toby when ma and pa kick you out

Aye, but can't aford a shed at this minute:doh would love one:naughty. Ohh ma and pa Dont mind strangely, I'll just yell down the stairs, 'I'm firing up the angle grinder' and they're fine, as Long as the doors are shut :D

[solarman216]

Bally hell the lad has not lived yet, I remember stripping my motor bike down in the kitchen and washing the bits off in an enamel bowl full of petrol, this was in a house in Chiswick London many moons ago, Rick

[96terrano]

Bally hell the lad has not lived yet, I remember stripping my motor bike down in the kitchen and washing the bits off in an enamel bowl full of petrol, this was in a house in Chiswick London many moons ago, Rick

got a transferbox upstairs, that good enough:lol

[solarman216]

got a transferbox upstairs, that good enough:lol

Not really, but if you spill the oil on your carpet it will stink for months, Rick

[96terrano]

Not really, but if you spill the oil on your carpet it will stink for months, Rick

yup, youre right their:augie

[solarman216]

you keep at it lad, you are well OK, as they say "one life live it" I have and no regrets, Rick

[96terrano]

you keep at it lad, you are well OK, as they say "one life live it" I have and no regrets, Rick

Indeed:D you'll probably be able to tell from my posts, I am always pushing boundaries....well....at least trying:lol

Thanks for you're support :bow:clap:thumbs

[briggie]

you keep at it lad, you are well OK, as they say "one life live it" I have and no regrets, Rick

ryan would make a great apprentice for you rick , like minds and all that :thumb2

[96terrano]

ryan would make a great apprentice for you rick , like minds and all that :thumb2
Aye, I'd generally be happy working for him, Shame about the distance, maybe when I get my LDV van ill come down for a week or two :D

[solarman216]

ryan would make a great apprentice for you rick , like minds and all that :thumb2

I would have him tomorrow, but distance is an issue, but yes I like his style, Rick

[solarman216]

I have just had the OK on a rather large job so maybe Ryan would be willing to come and stay for a month or so to help out? Rick

[briggie]

I have just had the OK on a rather large job so maybe Ryan would be willing to come and stay for a month or so to help out? Rick

if he cant afford the train fare , I will contribute summat :thumb2

[96terrano]

I have just had the OK on a rather large job so maybe Ryan would be willing to come and stay for a month or so to help out? Rick

That would actually be pretty cool, but I can't drive yet, but when I pass my test and get a van, to live in, then yes, I'd be more than happy to travel down, you seem a smashing bloke :D:thumb2

[96terrano]

if he cant afford the train fare , I will contribute summat :thumb2

Awe, thanks :)

[solarman216]

if he cant afford the train fare , I will contribute summat :thumb2

not necessary mate the job will pay expenses, Rick

[96terrano]

not necessary mate the job will pay expenses, Rick

Hmmm, well, when I pas my test, I generally might take you up on that offer, as you're down nearish London aren't you?

[solarman216]

no this job is to be completed this summer so you get you backside down here by train with sufficient clothes and I take care of the rest, Rick

[96terrano]

Pm sent

[spiderpig37]

Thats a cracking offer ryan jump at it wouldnt cost that much to get to the south coast and wages earnt will get you back
A month with rick might get you focussed
Grab the offer you will only regret it if you don't
Andy

[firebobby]

Thats a cracking offer ryan jump at it wouldnt cost that much to get to the south coast and wages earnt will get you back
A month with rick might get you focussed
Grab the offer you will only regret it if you don't
Andy

Totally agree, go for it Ryan
Just think, you could also be Ricks winch bitch when he goes off roading ;)

[MudLifeCrisis]

But Ryan got badly sunburnt in Scotland the other day , how will cope in sunny Bexhill :lol

[96terrano]

But Ryan got badly sunburnt in Scotland the other day , how will cope in sunny Bexhill :lol

Yes yes:rolleyes::lol:lol

[MudLifeCrisis]

Ryan in Bexhill

[96terrano]

Ryan in Bexhill

:lol but black absorbs heat. Unless I rig up a AC system........hmmm:naughty:sly