Author Topic: New Project a BatterRUSEr (Read 33306 times)

Godzil · « **Reply #25 on:** August 21, 2015, 01:19:05 pm »

@AF6LJ : Ok I'll add one

Added one, could you check if it match your expectations?

EEVblog · « **Reply #26 on:** August 21, 2015, 01:32:24 pm »

Silkscreen Probes The Monkey on the underside!

Godzil · « **Reply #27 on:** August 21, 2015, 01:39:16 pm »

Quote from: EEVblog on August 21, 2015, 01:32:24 pm

Silkscreen Probes The Monkey on the underside!

That would make sense!

Berni · « **Reply #28 on:** August 21, 2015, 01:58:35 pm »

While looking at the thread i was wondering if the static draw could be solved by adding some sort of mosfet switch circuit to connect the battery directly to the output when the voltage is above 1.2V and only switch on the converter when it drops.

I know 1.5V is a really small voltage to drive a mosfets gate with, but perhaps there are special ones that can do this?

timb · « **Reply #29 on:** August 21, 2015, 02:26:59 pm »

Quote from: NANDBlog on August 21, 2015, 11:33:09 am

Quote from: onlooker on August 21, 2015, 11:17:17 am
Joke aside, I am really interest to see some real test results that is not constrained by miniaturization. Betteriser claimed miniaturization that can deliver 1.5A. Did they really show the 1.5A part?
No, but they already showed a 3D model, and a monkey's ass.
Jokes aside, more than 6 years ago Michrochip demoed me the MCP1642 which is a boost converter working down to 0.35V after startup. The output voltage is minimum 2V. They designed it to drive gadgets (way too noisy for anything important) from a single primary cell, and it costs 0.35 USD. I guess they are smashing their head into the wall, because they should have made the output voltage go to 1.5V.

Hehe... Jim Williams did one better. Here's a discrete design using a single LTC1440 comparator and JFET that *STARTS* and runs from as little as 275mV: http://cds.linear.com/docs/en/application-note/an113f.pdf

Sent from my Tablet

Godzil · « **Reply #30 on:** August 21, 2015, 03:43:32 pm »

I'm working on a new revision, more to come later tonight (UK time) or during the weekend, I hope you will enjoy the updated version!

mewyn · « **Reply #31 on:** August 21, 2015, 04:07:24 pm »

Quote from: EEVblog on August 21, 2015, 04:41:06 am

Quote from: mewyn on August 20, 2015, 10:51:11 pm
My layout:

Is that big inductor you've got there, or are you just pleased to see me?

Yes.

I figured in making this I wanted to surpass the Batteriser in performance, be able to make something that didn't have that little pissant inductor that they used, one which I doubt would be able to hold enough energy to deliver a hundred milliamps, let alone the amp and a half they are saying it can deliver. It already couldn't fit in a battery compartment, so you know, just go whole-hog and make it as good as I can

eas · « **Reply #32 on:** August 21, 2015, 05:24:08 pm »

I've been working on my own approach to this problem. The theory of operation is that I create a small black hole and take advantage of time dilation to make it seem like the battery is lasting 8 times longer. Its complete bullshit, of course, but my assumption is that the sudden appearance of a tiny black hole is going to going to misdirect people from my little con.

Oh, any ideas on how I can create the black hole? I've decided ultracapacitors are a good starting point, and some of those cool rare-earth magnets, and some sort of crystal... Oh, and I'll call it a "green hole" for marketing purposes, of course.

fcb · « **Reply #33 on:** August 21, 2015, 05:47:33 pm »

I hope none of you get burgled by industrial spies looking to steal your prototypes. Also, in England, one might call the device a Twateriser.

firewalker · « **Reply #34 on:** August 21, 2015, 06:00:02 pm »

Stop calling the 1.5 volts cell a battery.

Alexander.

AF6LJ · « **Reply #35 on:** August 21, 2015, 09:41:10 pm »

Quote from: Godzil on August 21, 2015, 01:19:05 pm

@AF6LJ : Ok I'll add one

Added one, could you check if it match your expectations?

That's Great

c4757p · « **Reply #36 on:** August 21, 2015, 09:44:22 pm »

Quote from: fcb on August 21, 2015, 05:47:33 pm

Twateriser.

Jay_Diddy_B · « **Reply #37 on:** August 22, 2015, 11:48:31 am »

Hi,

Please check this link:

http://www.urbandictionary.com/define.php?term=TWAT

I hope we are talking definition 4 or 6.

Jay_Diddy_B

Macbeth · « **Reply #38 on:** August 22, 2015, 12:25:19 pm »

It's usually 2 and 5 in the UK. Used in much the same way as cunt.

Jay_Diddy_B · « **Reply #39 on:** August 25, 2015, 03:58:08 am »

Hi,

I have built the BatterRUSEr.

Here is the latest version of my schematic:

And the board layout:

This is a photograph of the blank board next to an AA battery:

And the assembled board:

Initial Tests

Vin was set to 1.1V (nominal)
The load current was set to 250 mA (nominal)

Vin, measured at the board 1.0893V
Iin = 425 mA

Vout, measured at the board 1.4965V
Iout, measured 251.45mA

Power In = 463mW

Power Out =375mW

Measured Efficiency = 375/463 x100 = 81%

Note: No attempt was made to optimize the efficiency. There is not too much I can do, only inductor selection.

Even with this simple measurement 20% of the power is lost in the boost converter.

I will do some measurements as time permits.

What would you like me to measure?

Regards,

Jay_Diddy_B

pickle9000 · « **Reply #40 on:** August 25, 2015, 04:31:07 am »

If anyone asks for a comparison between kilohamsters to milligerbils then that's probably the batterizer guys.

Joule Thief · « **Reply #41 on:** August 25, 2015, 04:47:35 am »

Quote from: pickle9000 on August 25, 2015, 04:31:07 am

If anyone asks for a comparison between kilohamsters to milligerbils then that's probably the batterizer guys.

If that happens we can have nanofrog answer their inquiry!

pickle9000 · « **Reply #42 on:** August 25, 2015, 04:52:38 am »

Quote from: Joule Thief on August 25, 2015, 04:47:35 am

Quote from: pickle9000 on August 25, 2015, 04:31:07 am
If anyone asks for a comparison between kilohamsters to milligerbils then that's probably the batterizer guys.

If that happens we can have nanofrog answer their inquiry!

And be very careful with your answers, they will end up in the next video proof.

pickle9000 · « **Reply #43 on:** August 25, 2015, 05:14:22 am »

@ Jay_Diddy_B

I apologize for the interruption, we will now return to scheduled programming...... in theory

AccountRemovedPerUsersRequest · « **Reply #44 on:** August 25, 2015, 05:57:14 am »

Quote from: pickle9000 on August 25, 2015, 04:31:07 am

If anyone asks for a comparison between kilohamsters to milligerbils then that's probably the batterizer guys.

No need to ask because we already know the answer: the ratio between kilohamsters and milligerbils is 800%. However you need to ask if you need a scientific explanation. The original mathematical formula is almost impossible to solve because of "clapping monkey constant" in it.

A.

EEVblog · « **Reply #45 on:** August 25, 2015, 06:04:27 am »

You should be able to get 90% with that puppy with careful selection.

AmmoJammo · « **Reply #46 on:** August 25, 2015, 07:00:04 am »

Quote from: EEVblog on August 25, 2015, 06:04:27 am

You should be able to get 90% with that puppy with careful selection.

Wouldn't that only be at the ideal current though? doesn't the efficiency vary with load anyway? so even if it does 90% in one situation, 80% seems like a reasonable assumption, as a best case scenario, for the butteriser, especially considering its limited space for an inductor.

Jay_Diddy, what does your boost converter do with a 500ma load? or 1.5 amps like the butteriser claims to do?

Delta · « **Reply #47 on:** August 25, 2015, 07:47:33 am »

Good work Jay!

Can you get some AA batteries and try running various products directly and then with your BatteRUSER, see which has the longer run time?

pickle9000 · « **Reply #48 on:** August 25, 2015, 08:14:01 am »

@Jay_Diddy_B

- Have you made multiple boards?
- Do you have dummy AA's so you can plug into a real device easily?

I was thinking a two cell configuration is normally what I see in a product.

deephaven · « **Reply #49 on:** August 25, 2015, 08:57:36 am »

@Jay_Diddy_B

What's the consumption at light loads and no loads?


EEVblog Main Site	EEVblog on Youtube	EEVblog on Twitter	EEVblog on Facebook	EEVblog on Odysee

Author Topic: New Project a BatterRUSEr (Read 33306 times)

Share me