Search found 18 matches

by rebeltaz
Tue Nov 17, 2009 5:02 pm
Forum: Computer Programming
Topic: looking for power supply info for Databrick II
Replies: 5
Views: 1734

Re: looking for power supply info for Databrick II

Just in case anyone else needs this info... I have discovered (and verified) that the ground pin is indeed the lower right and the positive pin is the upper left. This is looking straight on at the power connector.
by rebeltaz
Tue Oct 20, 2009 9:27 pm
Forum: General Discussion
Topic: capacitor or MOV?
Replies: 12
Views: 3725

Re: capacitor or MOV?

Ok.. Thanks... I appreciate the info. I guess I need to find some MOVs then...
by rebeltaz
Tue Oct 20, 2009 9:25 am
Forum: Computer Programming
Topic: looking for power supply info for Databrick II
Replies: 5
Views: 1734

Re: looking for power supply info for Databrick II

You and I seem to be on the same wavelength... :grin:

That was the next step I took - asking around on eBay. So far no response. And the person selling just the computer is who I purchased this from in the first place, so they would be of no help...

Thanks anyway!
by rebeltaz
Mon Oct 19, 2009 9:00 pm
Forum: General Discussion
Topic: capacitor or MOV?
Replies: 12
Views: 3725

Re: capacitor or MOV?

Its a 2200 pf 250v probably ceramic capacitor with prebent leads for automatic insertion. I beleive the X1Y1 stuff relates to a safety designation. I have seen these on line entry filters. Across the line is one designation. Line to grd is another and neutral to ground yet another . And it's purpos...
by rebeltaz
Mon Oct 19, 2009 8:37 pm
Forum: General Discussion
Topic: capacitor or MOV?
Replies: 12
Views: 3725

Re: capacitor or MOV?

Tzap, I have attached a photo of it... this one is KX222M instead of KX472M, but the component is identical.

Hakelsup, I like your suggestion! I'm always up for a good explosion. :cool: I will give that a try tomorrow.

Image
by rebeltaz
Mon Oct 19, 2009 8:32 pm
Forum: Computer Programming
Topic: looking for power supply info for Databrick II
Replies: 5
Views: 1734

Re: looking for power supply info for Databrick II

Thank you Tzap, but that was the first place I went - straight to the manufacturer. Unfortunately, they informed me that most of the employees there don't even know about this device and therefore, were unable to be of any help.
by rebeltaz
Mon Oct 19, 2009 5:10 pm
Forum: Computer Programming
Topic: looking for power supply info for Databrick II
Replies: 5
Views: 1734

looking for power supply info for Databrick II

I know this is way obsolete, but I think it will serve my purposes. I just bought a Datalux Databrick II portable computer with a touchscreen monitor on eBay that I am planning on using for a car MP3 player. I didn't think figuring out power supply would be a problem, but I was wrong... From what I'...
by rebeltaz
Mon Oct 19, 2009 5:05 pm
Forum: General Discussion
Topic: capacitor or MOV?
Replies: 12
Views: 3725

capacitor or MOV?

I have a bag full of components that I find regularly in television and DVD/VCR power supply circuits. They are small, circular, blue components with two leads and the following numbers printed on them: KX472M X1Y1 BS415 From their position in the power supply circuits on the AC power line, I was un...
by rebeltaz
Thu Sep 10, 2009 8:50 am
Forum: General Discussion
Topic: possible help using a vacuum flourescent display?
Replies: 5
Views: 1020

Re: possible help using a vacuum flourescent display?

The datasheet is the datasheet that the manufacturer provided me for this custom board. I only meant that the self-test routine described in the datasheet was inadvertently left in from the original design.

Thanks...
by rebeltaz
Wed Sep 09, 2009 7:50 am
Forum: General Discussion
Topic: possible help using a vacuum flourescent display?
Replies: 5
Views: 1020

Re: possible help using a vacuum flourescent displ

Hi, A quick idea (i did not study the data sheet very well yet) would be to try the self test first. Did you try that test first, and if so, what were the results? Yeah... I did attempt to try the self-test mode, but since this is a custom designed display, I think they reused part of the original ...
by rebeltaz
Mon Sep 07, 2009 7:24 pm
Forum: General Discussion
Topic: possible help using a vacuum flourescent display?
Replies: 5
Views: 1020

possible help using a vacuum flourescent display?

I have a now obsolete vacuum fluorescent display manufactured by IEE. I contacted the company and they were kind enough to send me a datasheet for the device. Unfortunately, I can't seem to get it working right. This particular display was custom designed for a customer as a serial device. I have tr...
by rebeltaz
Thu Dec 27, 2007 10:39 pm
Forum: General Discussion
Topic: 6v battery indicator
Replies: 13
Views: 4117

terri wrote: Oh, and one of the specifications was "simplicity."
Yeah. Great. Thanks.
by rebeltaz
Thu Dec 27, 2007 6:29 pm
Forum: General Discussion
Topic: 6v battery indicator
Replies: 13
Views: 4117

Re: 6v battery indicator

Hi Derek. Myself, I'd use the LM3914 chip. You'd only need 5 resistors for setting any voltage points to turn on the leds. You can have regular LEDs (up to ten) or can use a BAR display. Just google the LM3914 to get the datasheet. Also this IC doesn't require resistors to the LEDs. Hope this helps...
by rebeltaz
Thu Dec 27, 2007 2:05 pm
Forum: General Discussion
Topic: 6v battery indicator
Replies: 13
Views: 4117

Well, you still have to know your setpoints, even if it's going to measure open circuits. I don't know why people automatically go to integrated circuits to solve a simple problem like this. All you need is a voltage divider with three taps, with the LED limiter resistances figured into the taps. O...
by rebeltaz
Thu Dec 27, 2007 10:32 am
Forum: General Discussion
Topic: 6v battery indicator
Replies: 13
Views: 4117

MrAl wrote:Hi there Derek,

There are a number of approaches to this problem, the simplest
is probably just a four comparator chip like the LM339 and a
voltage reference diode (both very cheap).
Thank you.. I will see what I can do.