Hello all, Well, I have done the priliminary pass on this thing and don't know what to think.
I've attached a JPG of the jig from my digital camera for your perusal, I hope this is acceptable (sez she donning helment, flack jacket and nomex drawers :). Below is what I shared with Ole Bob on the subject: The preliminary testing of the laser/cds jig do not encourage me. The following is what data I did compile: Cullysprings DW (all batches so far use this), right out of the bottle: 0.27 ohms Batch 9301, 10 second switch, IcO: 0.305 mA, Icf: 2.81 mA, Initial resistance: 129 ohms, Final resistance: 43 ohms. Four hour run. This also gave a 0.27 ohm reading off the cds. Batch 9302, 1 second switch, Ico: 0.439 mA, Icf: 1.051 mA, Initial resistance: 261 ohms, Final resistance: 56 ohms. 5 hour run. This gave a reading of 0.35 ohms. Batch 9401, 5 second switch, Ico: 0.419 mA, Icf: 3.01 mA, Initial resistance: 194 ohms, Final resistance: 8 ohms. 3 hour 15 minute run. THis gave a reading of 0.31 ohms. Initial and Final resistances were measured at one set of probes giving about a minute for the readings to stabilize, used 2K scale. Positioning of the laser on the cds makes a difference. Not totally sure about this yet, but the "center" of the cds somewhat wider than the laser beam seems to remain stable. I had to beef up the jig to minimize the movement caused when turning the laser on. Batch ???, this is a DC batch that I still have around - noticibly yellowish. This was before I started keeping tags on the samples so no other data is available. This one gave a reading of 0.33 ohms. Thoughts? Thanks & take care, Vikki. -- Victoria Welch, WV9K, DoD#-13, Net/Sys/WebAdmin SeaStar.org, vikki.oz.net "Walking on water and developing software to specification are easy as long as both are frozen" - Edward V. Berard. Do not unto others, that which you would not have others do unto you.
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