[Outlaw]

Quote: (Originally Posted by Steve)

To make this you should be able to find the 9V plug very easily. Any hobby or electronic supplies shop should have it.

The Meg side requires:
1 – MOLEX p/n 03-06-1023 Connector Receptacle 2-pos .062
2 – MOLEX p/n 02-06-5135 Connector Terminal Female 24-30 AWG Gold

Search for availibility on Octopart You are bound to find a supplier that suits you. I have found DigiKey excellent

Thanks Steve. i'll try. my main concern is if they ship to Cyprus. i guess it wont be that costly, but most companies don't ship over here which is sad really.

Have some green.

Spyros

[steveharriss]

Moray Brown on this forum has these made up for sale. Reasonable price. Just waiting for some for my save a dive kit. PM him, I'm sure he'd be happy to post to Cyprus.

[steveharriss]

Received mine. Well made and handy as a back up.

[Outlaw]

Quote: (Originally Posted by steveharriss)

Moray Brown on this forum has these made up for sale. Reasonable price. Just waiting for some for my save a dive kit. PM him, I'm sure he'd be happy to post to Cyprus.

Thanks Steve,

who is Moray Brown? how do i find him? any contact or email details?

Thanks.

[Silent]

Find him here ---> http://www.rebreatherworld.com/members/moray-brown.html

[Outlaw]

Quote: (Originally Posted by Silent)

Find him here ---> http://www.rebreatherworld.com/members/moray-brown.html

thanks Silent.

green on your way!

Spyros

[Gilles]

Quote: (Originally Posted by Gilles)

One needs to also investigate if you could pack two 9V volt cells (in parrallell) to double the capacity.

Hopefully my battery welding days are over. Seems to work ok in the secondary. Looking at the tech specs of these 9V batteries, they have a nice continuous loss of voltage with depletion, hopefully failing in a very predictable manner.

[Outlaw]

Quote: (Originally Posted by Gilles)

Hopefully my battery welding days are over. Seems to work ok in the secondary. Looking at the tech specs of these 9V batteries, they have a nice continuous loss of voltage with depletion, hopefully failing in a very predictable manner.

Gilles,

that is some nice pics. call me stupid, but i was never good with electronics. (in terms of volt, amp, etc).

isn't that configuration making the output, 18v? could you explain a bit more? or do you aim to get a longer duration on that? because i have found some batteries on the net, which are supposed to be giving a triple amount of working time. i'll try and find a link and will post it for you.

to be honest, after this thread came up, i sort of liked the idea of having those batteries into my unit. that would have saved me from welding 5 batteries together and puting tape etc.

One question though. is it clear that a 9volt battery will work fine. what i mean is that people have tested them on their megs, as a "save a dive " battery, which would probably mean that it was used only for 3-4 hours at the most, if i am right. has anyone had them for ages on their unit? that isthe guy to ask if the electronics are ok.

Thanks.

Spyros

[Gilles]

Quote: (Originally Posted by Outlaw)

Gilles,

that is some nice pics. call me stupid, but i was never good with electronics. (in terms of volt, amp, etc).

isn't that configuration making the output, 18v? could you explain a bit more? or do you aim to get a longer duration on that? because i have found some batteries on the net, which are supposed to be giving a triple amount of working time. i'll try and find a link and will post it for you.

to be honest, after this thread came up, i sort of liked the idea of having those batteries into my unit. that would have saved me from welding 5 batteries together and puting tape etc.

One question though. is it clear that a 9volt battery will work fine. what i mean is that people have tested them on their megs, as a "save a dive " battery, which would probably mean that it was used only for 3-4 hours at the most, if i am right. has anyone had them for ages on their unit? that isthe guy to ask if the electronics are ok.

Thanks.

Spyros

Ask me a legal question, then you'll see


By connecting the batteries parallel (+ with + and - with -) you will double the charge capacity (physical equivalent of doubling the size of a cylinder). These 9V batteries have a capacity of about 625 mAH. By connecting them in parallel, it now becomes 1250mAH, still with 9V.

If you were to connect them in series (+ with -) as we do with the 5 AA cells, then you add the voltage (physical equivalent of doubling pressure to your cylinder), and you would end up with 18V, and frying the electronics.


The 5 AA in series have some 8V and some 2800 mAH capacity, so will still last twice as long as the above paralleled 9V cells. I have had welded cells fail on me during a dive, and thus have preference for something like this if it works.

It seems ok on the secondary, and I will see how it lasts and how the voltage drops with time. Depending, I'll then try on the primary.

[wedivebc]

Does anone know what minimum voltage is accecptable when using 9v batteries? There must be some point where battery failure is imminent and should be changed.