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debs3759
Joined: 18 Jan 2006
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 Posted: Mon Apr 03, 2006 12:55 pm Post subject: Need help identifying Beckman memory chips |
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I've got these 6 Beckman chips that I belive to be memory (possiboly DRAM, but I'm not sure), but I can't find any information about them. Does anybody know anything about them?
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CPUShack
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jd
Joined: 01 Jan 2006
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| Posted: Mon Apr 03, 2006 12:59 pm Post subject: |
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..Hummmm.. Debs....They allmost look like static ram.....not sure either tho...
Glin 
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debs3759
Joined: 18 Jan 2006
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| Posted: Mon Apr 03, 2006 1:28 pm Post subject: |
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| CPUShack wrote: | | these are more likely to be something like opamps or line drivers. |
| GlinGlin wrote: | | ..Hummmm.. Debs....They allmost look like static ram.....not sure either tho... |
Is there a reasonably simple way to test unknown chips like these, to get a vague idea? Whatever they are, they cost next to nothing... The seller thought they might be memory chips, but I bought them knowing they might be just about anything...
If they could be op-amps or line drivers, I'll have to look up what either of them actually does (not that I would start collecting either chip type on the basis of having these, but it's good to have an idea what I have...)
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CPUShack
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fRaSsL
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| Posted: Mon Apr 03, 2006 1:32 pm Post subject: |
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These are resistor networks.
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CPUShack
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debs3759
Joined: 18 Jan 2006
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| Posted: Mon Apr 03, 2006 1:40 pm Post subject: |
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| fRaSsL wrote: | | These are resistor networks. |
That'll make them easy to test then  Good thing they were cheap!
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Hippo
Joined: 01 Feb 2006
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| Posted: Mon Apr 03, 2006 2:06 pm Post subject: |
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| fRaSsL wrote: | | These are resistor networks. |
I would probably go with that too however normally on resistor packs you have an indication of the resistance on the package. Nothing on that package relates to a E range of resistor.
Edit: Actually they might be Zero ohm links. Look here on this very site and notice the resistor part on the end. '0' in your case may mean Zero Ohms.
http://www.cpu-world.com/CPUs/Odd.html |
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debs3759
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| Posted: Mon Apr 03, 2006 2:23 pm Post subject: |
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Best way for me to check that is to put some batteries in my multimeter when i can get to the shop - at least that is a simple test that won't damage any of the other chip types it could be
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sammyc
Joined: 09 Dec 2005
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| Posted: Mon Apr 03, 2006 2:35 pm Post subject: |
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I turned those beckmans down off Richard 
But - interestingly Genna has one of these in his database under 'inidentified chips'
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debs3759
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| Posted: Mon Apr 03, 2006 3:12 pm Post subject: |
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I only bought them because I got them for the £0.99 opening bid Mind you, as they appear to not be what he thought and I hoped, it looks like £0.99 well wasted 
I didn't find the "unidentified chips" link - is that the "odd chips" link that Andy posted above? If so, it's only a similar chip, not the same - although as discussed above, it seems likely that it is the same type of chip and I can test it to see if it is a resistor network
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Hippo
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| Posted: Mon Apr 03, 2006 3:48 pm Post subject: |
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| If its a Zero ohm network then you should either get a dead short from the pins across the chip or from one of the pins to all the others. If it isnt then you will get a resistance reading. |
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