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| | | [[DIYbio:Notebook/Open_Gel_Box_2.0/2009/01/30|Open Gel Box 2.0 conference call 2009-01-30 Minutes (page moved)]] |
| === Open Gel Box 2.0 conference call 2009-01-30 ===
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| : notes by *'''[[User:Jonathan Cline|jcline@ieee.org]] 16:54, 30 January 2009 (EST)'''
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| Discussion on gel box and p/s design:
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| Goals for gel box & related;
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| 1. standardization; pick what we want, have everyone use it; get everyone on the same page for experimental results, etc.
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| 2. safety; pick the best reagents & components for safety
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| 3. Compare up front costs -vs- run rate costs
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| --- "ease of use for hobbyist"; professional equip is meant to run 1000's of times; hobby equipment may run 100 times; different cost model. May want lower up front with higher run rate cost, if it makes sense.
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| (Norman) Result of gel box are going into biz plan competition
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| (norman) standardizing the power supply to power multiple components (gel box, thermocycler, etc.)
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| (mac) http://www.ponoko.com/ - open source manufacturing
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| (jonathan) Look at discovery channel dna explorer for business target volumes and costs
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| Reasons for building a custom supply:
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| 1. (norman) wants to supply the illuminator, etc as well; peripheral support (LEDs, peltier device)
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| 2. presumed lower cost? TBD.
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| 3. (tito) experimenting with different voltages for those designing the gel box (however end user won't need variable voltages?)
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| Power requirement;
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| 1. Norman's results show 60v, 90v, 120v
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| 2. Norman's results show 100mA is sufficient
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| Why use a variable supply? Fixed supply is OK.
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| 1. (norman) fixed supply anywhere in the range 90-120 for "FAST RUN"
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| 2. (norman) fixed supply anywhere in the range 60v for "SLOW RUN"
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| 3. (tito) would like to test "better faster gels" (would need 300v) -- wait on the results on this; this will "gel system 3.0", not now
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| :: (jonathan) philip is building the experimenter-supply for ~300VDC variable output; coming soon
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| :: (jonathan) try the nixie supply for ~150V-180VDC for experimenting
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| (Tito) Where can I buy a supply right now w/o any electronics construction that does this? Only found this one: http://educationalscience.com/merchant.ihtml?merchantid=4&pid=3178&step=4&passwordstatus=:passwordstatus
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| :: (jonathan) At $100 seems cheap. Price makes sense because of manufacturing volume. Not a lot of volume for this voltage range ~100v supply.
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| :: (jonathan) closest other method is to use +12V supply into off-the-shelf inverter to 120VAC then use a bridge+RC to filter to ~90VDC.
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| What other peripherals might need to be connected?
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| (jonathan) Also see, the DIY spectrophotometer; possible "peripheral" to "gel system".
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| http://www.rsc.org/Education/EiC/issues/2007Sept/BuildYourOwnSpectrophotometer.asp
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| (jonathan) customer wants a full set of equipment to use in the lab
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