LDRs Matched Sets Post #1678
Guys/Gals
I bought 125 LDRs. Was thinking on a equalizer but its not going to happen.
I have many matched sets and would sell them to you if you are interested. Email me for 4.
All are silonex nsl-32sr2
http://www.alliedelec.com/Search/Pr...SR2S&R=6993011&SEARCH=6993011&DESC=NSL-32SR2S
http://www.alliedelec.com/Images/Pr.../SILONEX-INC_ACTIVES-AND-PASSIVES_6993011.PDF
http://www1.silonex.com/audiohm/levelcontrol.html
Process:
I placed them in a jig and ran voltage in through 100, 9.96k, 22.1k, 47k resistors each for about 10minutes placing the next resistor in series before removing the previous to make sure the LED never turned off. I wrote down each reading and entered into a spreadsheet. Made a graph and selected the best matches. I bagged and tagged each set of two pairs and am now halfway through putting each set of pairs into another test jig to listen to them and make sure that they are in fact matched. So far I am having stellar success with great matching.
After including the work on building the jigs, testing, entering data, testing again, placing and removing from jig I estimate each LDR has taken me well over an hour to test. I think I need a more efficient method!
If you are interested let me know by email.
Uriah
Guys/Gals
I bought 125 LDRs. Was thinking on a equalizer but its not going to happen.
I have many matched sets and would sell them to you if you are interested. Email me for 4.
All are silonex nsl-32sr2
http://www.alliedelec.com/Search/Pr...SR2S&R=6993011&SEARCH=6993011&DESC=NSL-32SR2S
http://www.alliedelec.com/Images/Pr.../SILONEX-INC_ACTIVES-AND-PASSIVES_6993011.PDF
http://www1.silonex.com/audiohm/levelcontrol.html
Process:
I placed them in a jig and ran voltage in through 100, 9.96k, 22.1k, 47k resistors each for about 10minutes placing the next resistor in series before removing the previous to make sure the LED never turned off. I wrote down each reading and entered into a spreadsheet. Made a graph and selected the best matches. I bagged and tagged each set of two pairs and am now halfway through putting each set of pairs into another test jig to listen to them and make sure that they are in fact matched. So far I am having stellar success with great matching.
After including the work on building the jigs, testing, entering data, testing again, placing and removing from jig I estimate each LDR has taken me well over an hour to test. I think I need a more efficient method!
If you are interested let me know by email.
Uriah
Patrick, I am here. I already explained how I did my testing and it has nothing to do with .25db. I have no idea how to figure .25db and would but I could ever hear .25db.
I am at this point sold out of LDRs however I have purchased another 100 because I have had several subsequent requests for matched pairs.
I include the test results to whoever buys them and they can make up their mind if they want the pair. If you are interested I can give you the results of a few pair later this week or weekend and you may put the results in the algorithm to find out if they meet your needs.
Uriah
I am at this point sold out of LDRs however I have purchased another 100 because I have had several subsequent requests for matched pairs.
I include the test results to whoever buys them and they can make up their mind if they want the pair. If you are interested I can give you the results of a few pair later this week or weekend and you may put the results in the algorithm to find out if they meet your needs.
Uriah
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