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Post  duke.johnson on Wed Feb 18, 2015 7:02 pm

Hey Guys
I'm replacing a bunch of battery operated electric eye faucets and making them hardwired with transforms, you most likely don't care about that detail. Anyways, I'm going to end up with about 20 of these little "C" size 1.5 volt battery boxes.  Seems like they would make great glow drivers for 1/2A.  I couldn't bring myself to throw them away without asking if anyone could use one.  Let me know, you pay the shipping and it's yours.
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Post  Marleysky on Wed Feb 18, 2015 8:29 pm

Cool PM sent. Cold
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Post  Marleysky on Sat Feb 28, 2015 9:52 pm

Duke - thanks for the freebie. Lookalike I was the only one to request one. Thought I send back a report that when the holder is filled with 4 - 1.5 volt c cells the output voltage is 6 volts (6.32 volts PM my VOM). Gonna have to get a voltage resistor or speed control dial to lower the volts down to 1.5 for the glow heads. Otherwise I'll be ordering new glow heads from Bernie by the box full! I'm so old I forgot the difference between series and parallel connections, and assumed this battery box was like my cox starter box but with 4 batteries. lol!
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Post  dinsdale on Sat Feb 28, 2015 11:57 pm

Marleysky wrote:Duke - thanks for the freebie. Lookalike I was the only one to request one. Thought I send back a report that when the holder is filled with 4 - 1.5 volt c cells the output voltage is 6 volts (6.32 volts PM my VOM). Gonna have to get a voltage resistor or speed control dial to lower the volts down to 1.5 for the glow heads. Otherwise I'll be ordering new glow heads from Bernie by the box full!   I'm so old I forgot the difference between series and parallel connections, and assumed this battery box was like my cox starter box but with 4 batteries. lol!
I use similar battery boxes. It's a doddle to re-wire the box to parallel the batteries. I also have what was an 8 x AA in series box (12v) which is now an 8 x AA in parallel box (1.5v). Stiff(ish) wire is easy to come by.
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Post  duke.johnson on Sun Mar 01, 2015 12:39 am

So, they don't work?
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Post  microflitedude on Sun Mar 01, 2015 1:25 am

duke.johnson wrote:So, they don't work?

They're wired in series, which gets you 6.0v rather than 1.5v if wired in parallel. They can still be used, you just need to rewire them accordingly.
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Post  duke.johnson on Sun Mar 01, 2015 2:10 am

Rene-I sorry, I didn't know they were wired that way. If you can use it, I'll send your shipping cost back to you.

Can someone post a picture/drawing of the difference. I'm a plumber, not electrician.
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Post  microflitedude on Sun Mar 01, 2015 3:20 am

With series, each added cell adds to the terminal voltage while maintaining the same amount of current of a single cell. On the other hand, parallel wiring maintains the same voltage but increases current with each added cell, for applications that require more current draw.

With high resistance circuits like glow plugs, you want to send the coil enough current to keep it lit without dropping too far below nominal voltage.

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Post  roddie on Sun Mar 01, 2015 7:02 am

Understanding series vs. parallel connections can be tricky if you haven't read-up on the subject. Most people don't need to understand the difference.. because the work has already been done for them. Replacing batteries simply requires looking at a diagram in the battery box. Most multi-battery (AAA/AA/C/D) devices are series wired. Two 1.5V cells (in series) =3V, three cells =4.5V four cells =6V etc. Replacement flashlight bulbs are typically rated for either 3, 4.5, or 6V. The old "boom-box" radio/cassette players were typically powered by X8 "D" cell batteries "in series" (12V) and often came with a cord-set for plugging into your vehicle's 12V cigarette-lighter receptacle.

I'm still learning about how to "properly" wire-up custom speaker systems. If multiple speakers are wired incorrectly to a single channel.. you can damage your amplifier because of the ohms resistance.
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Post  Marleysky on Sun Mar 01, 2015 11:58 am

duke.johnson wrote:So, they don't work?

Yes, they work just fine. As is, they (it) will put out 6 volts. With a little bit of change to the wiring, like microflightdudes diagrams it'll put out 1 1/2 volts.
With the wiring changes made and a little strap of Velcro or two, mounted to your forearm and wired to a Hot-glove, it will make a great glow power box! No, I'm keeping it. Biplane
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Post  duke.johnson on Sun Mar 01, 2015 1:49 pm

Rene-sounds good just wanted to make sure you were happy. And that exactly what I'm going to do with mine.

Matt- Thanks, that just like plumbing water heaters that way. You'd think if I understand water and can plumb anything in my head, I should be able to understand current. But with electronics, I usually need a picture.
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