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SEN / CEN All JFET IV Converter Evaluation Pack

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#141
payment sent as personal payment 'money's owed', all fees covered

i'll do what i can to help with 9018/9012 setup yes. is the optional buffer for the AVCC/2 reference allowed for on the vref pcbs? will this require another heatsink? time to buy the article before asking further q's. kinda funny that the bias cut could turn out to be more complicated than the IV stage. we should try to organise a GB of A123 LiFePO4 batteries
 
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#145
necplusultra & CeeVee mailed and said they did not receive the instructions, though they were on the original email list (addresses correct).

I have resent to both of them.

If any of you did not receive instructions by email, please get in touch by email or PM via the forum.



Thx,
Patrick
 
#149
Apparently a few people did not receive my original payment instruction email, for whatever reason.

I have sent the instruction again by both email and PM (via DIYA forum) to those involved.
I believe many have received them now.

If you still have not, please drop me a PM via the forum.


Sorry for the extra trouble,
Patrick
 
#152
PCBs ready, waiting for heat sinks (and payment).
Shown here the SEN Vref version.


Patrick
 

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#157
thanks, thats excellent, will fit quite nicely in a case already starved of space with the first ackodac+NTD1 IV. coupled with a compact multiple regulator board for it it should be quite neat.

people looking for multiple lifepo4 and lion battery chargers should look towards radio controlled racing brand multiple chemistry chargers like FMA. mine which was purchased a few days agoFMA cellpro 10XP will charge all of the batteries at once, FAST and can be left hooked up to the PC to monitor charge and charging can be initiated with a click of the mouse. it may even be able to be scripted. charges at up to 15A, so about 10 minutes to fully charge a 10 cell 33v @ 2300mah A123 pack (or 20 or 30 if 2-3 cells are wired in parallel for each position, which is what i'll do, i'll set it up as a 4S3P pack for ~10v per supply.

these are handy and certainly easier than wiring up your own charger for some of these less than straight forward, less than passively overcharging chemistries.

I don't recommend getting a cheap facsimile of one though as some are outright dangerous and others are simply useless. i had a thunder power charger, quite a reputable brand but only does 6S packs and has a pretty funky balancing circuit that took forever to do accurate balancing, often timing out with an error after a couple hours trying. so i gave up and bought a higher end one. i figure it'll come in handy for years to come and is adaptable to new chemistries as they are released by upgradable firmware. will do lead acid, all known lithium types, NIMH etc etc
 
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#159
excellent, hopefully the linear audio mag i bought last week gets here in time. i do wish they also made it so that you get an electronic pdf edition for reading on iPad etc., as that could be delivered online straight away with the hard copy for reference. i don't think it should be instead of it, real magazines are becoming a rarity and its nice to have a collection, but electronic is much more handy and versatile, could even have simulations to accompany the articles
 
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