Author Topic: What's this please? (Component Advice)  (Read 556047 times)

0 Members and 1 Guest are viewing this topic.

Offline G7PSK

  • Super Contributor
  • ***
  • Posts: 3698
  • Country: gb
  • It is hot until proved not.
Re: What's this please? (Component Advice)
« Reply #550 on: June 02, 2014, 08:37:54 am »
The board looks like phenolic resin, what it was used for I have no idea.
 

Offline xquercus

  • Contributor
  • Posts: 47
  • Country: us
Re: What's this please? (Component Advice)
« Reply #551 on: June 02, 2014, 12:06:08 pm »
Can anyone take a shot identifying the micro in the attached pic?  It's an 18-pin DIP package and reads:

LESTER 2409
01950 V1.0
9650     L1

The 9650 is likely a date code.  This is in a Invacare Action "24 Volt Fully Automatic Battery Charger" manufactured in 1997.  All the other parts are easy to ID but this is an oddball.
 

Offline daqq

  • Super Contributor
  • ***
  • Posts: 1823
  • Country: sk
    • My site
Re: What's this please? (Component Advice)
« Reply #552 on: June 02, 2014, 12:20:37 pm »
Most likely a re-branded microcontroller (guessing by the adjacent ceramic resonator). A PIC would be my guess by the power line (big fat line) position in the middle.
Believe it or not, pointy haired people do exist!
+++Divide By Cucumber Error. Please Reinstall Universe And Reboot +++
 


Offline tsmith35

  • Regular Contributor
  • *
  • Posts: 242
  • Country: us
Re: What's this please? (Component Advice)
« Reply #554 on: June 02, 2014, 03:27:29 pm »
Lester 240901950 shows up in searches, but no datasheets that I could find.
 

Offline xquercus

  • Contributor
  • Posts: 47
  • Country: us
Re: What's this please? (Component Advice)
« Reply #555 on: June 02, 2014, 08:20:51 pm »
Thank you, guys.  I did quite a bit of searching and missed that Lester was the name of the company that manufactured the entire charge controller.
 

Offline amyk

  • Super Contributor
  • ***
  • Posts: 6848
Re: What's this please? (Component Advice)
« Reply #556 on: June 03, 2014, 12:39:09 pm »
Most likely a re-branded microcontroller (guessing by the adjacent ceramic resonator). A PIC would be my guess by the power line (big fat line) position in the middle.
Position of the resonator doesn't fit with any PIC I know.

On the other hand, it does fit the Zilog Z86.
 

Offline Terabyte2007

  • Frequent Contributor
  • **
  • Posts: 527
  • Country: us
  • It is purpose that created us... That defines us..
Re: What's this please? (Component Advice)
« Reply #557 on: July 30, 2014, 01:30:42 pm »
I am relatively sure these are PCB fuses but I can't seem to find the rating. Does anyone know what the rating of these is?

Thanks,
Eric Haney, MCSE, EE, DMC-D
Electronics Designer, Prototype Builder
 

Online PA0PBZ

  • Super Contributor
  • ***
  • Posts: 4360
  • Country: nl
Re: What's this please? (Component Advice)
« Reply #558 on: July 30, 2014, 01:47:12 pm »
One black band = 2A according to this:




No warranties whatsoever of course...
Keyboard error: Press F1 to continue.
 

Offline Terabyte2007

  • Frequent Contributor
  • **
  • Posts: 527
  • Country: us
  • It is purpose that created us... That defines us..
Re: What's this please? (Component Advice)
« Reply #559 on: July 30, 2014, 01:59:11 pm »
One black band = 2A according to this:




No warranties whatsoever of course...

Thanks, this helps!

I may sacrifice one for a test!  :D
« Last Edit: July 30, 2014, 02:02:35 pm by Terabyte2007 »
Eric Haney, MCSE, EE, DMC-D
Electronics Designer, Prototype Builder
 

Offline Sionyn

  • Frequent Contributor
  • **
  • Posts: 848
  • Country: gb
Re: What's this please? (Component Advice)
« Reply #560 on: August 01, 2014, 11:58:27 am »
anybody recognise the manufacture logo of this microswitch looks like alps, but i can't find any datasheets about alps micro switchs
eecs guy
 

Offline AndersAnd

  • Frequent Contributor
  • **
  • Posts: 568
  • Country: dk
Re: What's this please? (Component Advice)
« Reply #561 on: August 01, 2014, 12:04:23 pm »
anybody recognise the manufacture logo of this microswitch looks like alps, but i can't find any datasheets about alps micro switchs
Yes that's an Alps switch.

ALP Switch Disassembly and Assembly Guide http://projectfed.blogspot.dk/2012/12/repairing-omron-and-alps-buttons.html

Repairing Omron and Alps buttons http://projectfed.blogspot.dk/2012/12/repairing-omron-and-alps-buttons.html

Alps SKCL/SKCM series http://deskthority.net/wiki/Alps_CM

From this link here's an old Alps keyboard switch with the same Alps logo which has since been replaced with a more modern ALPS logo:

« Last Edit: August 01, 2014, 12:13:43 pm by AndersAnd »
 

Offline Sionyn

  • Frequent Contributor
  • **
  • Posts: 848
  • Country: gb
Re: What's this please? (Component Advice)
« Reply #562 on: August 01, 2014, 09:44:14 pm »
cheers  AndersAnd i moding this agetec aracde stick to usb
eecs guy
 

Offline Hex173t

  • Contributor
  • Posts: 25
  • Country: us
Re: What's this please? (Component Advice)
« Reply #563 on: August 02, 2014, 05:48:36 pm »
I have this device that is made by WRE (Wide Range Electronics), model 642-115.  Inside is what looks like a transformer, but there is no secondary output.  It draws 9.5 amps when on, is very heavy, and when on with a steel nail on it it orients the nail from left to right.

My best guess is it's a degausser.  Does anyone know this device?

 

Offline AndersAnd

  • Frequent Contributor
  • **
  • Posts: 568
  • Country: dk
Re: What's this please? (Component Advice)
« Reply #564 on: August 02, 2014, 05:58:22 pm »
I have this device that is made by WRE (Wide Range Electronics), model 642-115.  Inside is what looks like a transformer, but there is no secondary output.  It draws 9.5 amps when on, is very heavy, and when on with a steel nail on it it orients the nail from left to right.

My best guess is it's a degausser.  Does anyone know this device?
Yes a degausser / magnetic eraser to delete magnetic tapes, floppy discs, hard drives or similar.
A "transformer" with no secondary is just a coil. In this case the coil is used to create a very strong magnetic field.
Don't put a mechanical watch or credit card anywhere near it.


Hee's a similar one with a magnetic tape on top of it.





the most expensive one I found for sale with a quick search on eBay is 779 USD, so you never know, it might still be worth something:
http://www.ebay.com/itm/400742606111

« Last Edit: August 02, 2014, 06:17:59 pm by AndersAnd »
 

Offline Richard Crowley

  • Super Contributor
  • ***
  • Posts: 4310
  • Country: us
  • KE7GKP
Re: What's this please? (Component Advice)
« Reply #565 on: August 02, 2014, 06:19:33 pm »
Many of the final-generation digital tape media were very-high-coercivity and required very strong magnetic fields to erase the tape.  Thus the high prices for what would have otherwise simple commodity degaussers (half-a-transformer as AndersAnd said.)
 

Offline Hex173t

  • Contributor
  • Posts: 25
  • Country: us
Re: What's this please? (Component Advice)
« Reply #566 on: August 02, 2014, 06:26:16 pm »
Well how about that?  I got it for free, figuring I could use the enclosure for something.  It's not as big as the high dollar ones on ebay but still, might be worth more than I paid.

Thanks all

Bill
 

Offline Terabyte2007

  • Frequent Contributor
  • **
  • Posts: 527
  • Country: us
  • It is purpose that created us... That defines us..
Re: What's this please? (Component Advice)
« Reply #567 on: August 02, 2014, 07:16:09 pm »
While cleaning up my parts bin I found this. Curious, I wanted to see what it was so I pulled out my Fluke and measured about 11 MOhms. I then checked it again and got 7M. So I pulled out another DMM, my Amprobe, 9M, again another Fluke, 15M. I then checked it with my Electrometer, 23M, I then used my LCR meter, 3.4K, 2nF capacitance and no inductance. But the curious problem, I get widely different measured values across all my test gear which has me curious as to what this is? If anything, just out of curiosity!
Eric Haney, MCSE, EE, DMC-D
Electronics Designer, Prototype Builder
 

Offline SeanB

  • Super Contributor
  • ***
  • Posts: 15397
  • Country: za
Re: What's this please? (Component Advice)
« Reply #568 on: August 02, 2014, 07:26:43 pm »
It is a diode............

Likely 1N745 200V zener diode.
« Last Edit: August 02, 2014, 07:29:35 pm by SeanB »
 

Online PA0PBZ

  • Super Contributor
  • ***
  • Posts: 4360
  • Country: nl
Re: What's this please? (Component Advice)
« Reply #569 on: August 02, 2014, 07:28:03 pm »
What is it ,glass? Is there any text on it beside the C D I'm imagining to see?
Keyboard error: Press F1 to continue.
 

Offline Terabyte2007

  • Frequent Contributor
  • **
  • Posts: 527
  • Country: us
  • It is purpose that created us... That defines us..
Re: What's this please? (Component Advice)
« Reply #570 on: August 02, 2014, 07:30:07 pm »
What is it ,glass? Is there any text on it beside the C D I'm imagining to see?

It might be glass or an epoxy resin of sorts. It has CD printed twice on it. SeanB mentioned it may be a diode, but it does not have the properties of most diodes I worked with.
Eric Haney, MCSE, EE, DMC-D
Electronics Designer, Prototype Builder
 

Offline Terabyte2007

  • Frequent Contributor
  • **
  • Posts: 527
  • Country: us
  • It is purpose that created us... That defines us..
Re: What's this please? (Component Advice)
« Reply #571 on: August 02, 2014, 07:35:02 pm »
It is a diode............

Likely 1N745 200V zener diode.

Thanks, I'll take a look at the datasheet.
Eric Haney, MCSE, EE, DMC-D
Electronics Designer, Prototype Builder
 

Offline Terabyte2007

  • Frequent Contributor
  • **
  • Posts: 527
  • Country: us
  • It is purpose that created us... That defines us..
Re: What's this please? (Component Advice)
« Reply #572 on: August 02, 2014, 07:49:03 pm »
It is a diode............

Likely 1N745 200V zener diode.

Your right, it's a zener. Never even thought to check that, the coding on the part got me. Not sure I ever ran across banding like that with a zener diode. Thanks!
Eric Haney, MCSE, EE, DMC-D
Electronics Designer, Prototype Builder
 

Offline AndersAnd

  • Frequent Contributor
  • **
  • Posts: 568
  • Country: dk
Re: What's this please? (Component Advice)
« Reply #573 on: August 03, 2014, 11:25:44 am »

It is a diode............

Likely 1N745 200V zener diode.
Why 745?

As far as I can tell the color code is violet (7), yellow (4), blue (6) and the 4th ring looks brown (A) but the picture isn't too well lit, so I'm not entirely sure from the picture if the 4th ring is brown (A) or red (B)? So shouldn't it be 1N746A or 1N746B?
The brown or red 4th ring indicates it's an 'A' or 'B' model respectively: 1N746A or 1N746B according to this Diode Color ID Chart : http://www.crystalradio.net/cal/diodeid.shtml


You can also entered the color code as an 1N color code in MiscEl [Miscellaneous electronics calculations]: http://www.miscel.dk/MiscEl/miscel.html

1N746A screenshot:


1N746B screenshot:
« Last Edit: August 03, 2014, 11:50:01 am by AndersAnd »
 

Offline SeanB

  • Super Contributor
  • ***
  • Posts: 15397
  • Country: za
Re: What's this please? (Component Advice)
« Reply #574 on: August 03, 2014, 11:35:36 am »
Easy enough to tell if it is a 3v or 200V zener then, use a resistor and a 10v supply. I got the diode part right, though I probably misread the colours on it.

5, 6 what is a simple one digit error in the LSB going to do anyway............ ;)

 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf