#garfield Logs

Mar 27 2015

03:54 katsmeow-afk http://www.ebay.com/itm/OPA552-High-Voltage-High-Current-Power-OpAmp-60V-2A-DIP-8-OPA552PA-USA-/181149840281
03:55 katsmeow-afk the first one can be heatsunk, the 2nd one is a dip-8
03:59 katsmeow-afk swings to 2v of rails, so to goto zero volts, you need the Vss to be -3v
04:15 katsmeow-afk http://www.ebay.com/itm/APEX-PA42-HIGH-VOLTAGE-POWER-OPERATIONAL-AMPLIFIERS-IC-OP-AMP-350V-60mA-/131458028141
04:16 katsmeow-afk thing is, all those cost 2x..4x as much as a TDA7293 TDA7292 etc
04:19 katsmeow-afk http://www.ebay.com/itm/Burleigh-PZ-70-High-Voltage-DC-Op-Amplifier-Unit-0-1000V-Variable-PARTS/131468623482
09:57 rue_house all too rich for my blood
10:06 rue_house keep in mind I'm trying to make this out of parts I already have
14:34 katsmeow-afk the TDA729x are under $2 each, and would replace several TIP4x transistors and their mounting hardware
14:35 katsmeow-afk there's the usual issue of them going obsolete in the long trip from China
14:36 katsmeow-afk we are having a lil winter again, which is normal for here
14:36 katsmeow-afk one yr about this time there was inches of snow on the gnd
14:36 katsmeow-afk was hard tosolder to
14:45 tsmeow-afk ponders using 74hc259's as programmable neurons, because they are like bit-wise 138's with 373 latches buil
14:46 katsmeow-afk it would have 3 inputs and 8 outputs
14:46 katsmeow-afk and act really wierdly
15:04 katsmeow-afk ooo,, dangerous chip: http://www.ebay.com/itm/LOT-OF-16-NEW-ISSI-61C416-12KX-CMOS-CACHE-RAM-/291063366402
15:04 katsmeow-afk because it's never going to be found in the wild again, if you ever need another one, you are already out of luck
15:05 katsmeow-afk it was designed for the 80386, it's a plcc/qfp, it's 4k words of 16bits
15:27 katsmeow-afk might make a good one-off diy cpu core, 4096 registers in 16bit increments, qty 16 of the chips for $5, 12ns access time isn't really terrible
15:58 katsmeow-afk next-to-last directions for making "home made baked beans" : Then, pour in three cans of good ol� pork �n beans. They�re the best beans for making baked beans. Everyone who�s anyone knows that!
16:03 katsmeow-afk --
16:05 katsmeow-afk you realise that with 2 6502 in a C64, #1 can be running program, and #2 being the human interface, it's possible #2 can change #1's code and variables while it is executing, without #1 having a clue it's been done?
16:05 katsmeow-afk --
16:06 katsmeow-afk (well, with exceptions: cannot change a line of code or a variable that is currently in use, and some pauses in #1 execution speed are inevitable but minor)
19:14 katsmeow-afk with 4096 registers, you could bank them as 16 registers by 256 deep, for almost instant stack operations on the whole reg set at once
19:15 katsmeow-afk and building with two chips, so you could emulate a dual-port-read 16bit operation, you could single-port-read 32bit words
19:18 katsmeow-afk take $20 to buy+s&h to make 16 register cores
19:19 katsmeow-afk yipes, it's 7pm
19:22 katsmeow-afk found some wonderful drains for 5 gallon homer buckets , outfitting the whole 100-bucket garden would cost only $800 ,,,,, i declined
19:34 katsmeow-afk HarborFreight has their $60 mig cart on sale atm for $35. It might fit
19:34 katsmeow-afk scopes, and HF says it's "100 lb rated". If i were the typical city
19:34 katsmeow-afk dweller tho, i'd go right from HF to HomeDepot/Lowes and buy a 3ft
19:34 katsmeow-afk length of steel (or heavy aluminum) angle to spread those tiny front
19:34 katsmeow-afk wheels farther apart.
19:34 katsmeow-afk Cheap insurance for reduced tipping and
19:34 katsmeow-afk resultant scope tossing. HF has larger cheap tiny caster wheels, in
19:34 katsmeow-afk assorted mounting styles and colors, including a Tek-blue, if you
19:34 katsmeow-afk are so inclined.
22:19 katsmeow-afk oo,, "Moto Rola Re Gulators" !
22:49 katsmeow-afk .... (glaciers melting at, literally, a glacial pace) ....
22:51 katsmeow-afk Research by Climate Central, a nonprofit climate science and journalism organization, found that $71 billion of Florida property sits on land less than two feet above the high tide line.
23:18 katsmeow-afk India is quickly erasing any doubts about the sincerity of its solar ambitions. In fact, several Indian banks recently committed to loaning $57B for green technologies by 2022, coincidentally the same date that the Indian government plans to have installed 100 GW worth of solar PV.
23:28 rue_house i'm back
23:28 katsmeow-afk you are?!
23:28 katsmeow-afk [citation needed]
23:30 katsmeow-afk the Disability Insurance Trust will run out in 2016 if nothing is changed.
23:30 rue_house worked late
23:31 katsmeow-afk lucky you
23:32 tsmeow-afk wrote a lot to channel while talking to herself t
23:35 katsmeow-afk Home Depot has topsoil, real soil, not fertilized pine bark chips, 40lbs for $2
23:36 tsmeow-afk about ba
23:37 katsmeow-afk figure a sq ft of ground 8" deep shuld be topsoil, then a sqft of gnd is $4
23:38 katsmeow-afk or an acre of it should be $173,000
23:38 katsmeow-afk but an acre of top soil is NOT $173,000
23:38 katsmeow-afk no farm pays $173,000 for an acre
23:39 katsmeow-afk my 12 acres would be worth $2 million if it had 8" of topsoil onit???
23:41 katsmeow-afk the customary rate for rural land here is $0.05 per sq ft ,,, but Home Depot sells the dirt for $4 per sq ft
23:41 katsmeow-afk what a rip
23:44 katsmeow-afk of course the land here ,,, you can't put a shovel into it, it's difficult going with a small demo hammer, altho a 150lb jackhammer works well till you get past 2ft deep, then it's slow going for it too
23:45 katsmeow-afk and forget about getting an average dozer or front end loder into it, it's almost indistructable by Case 580 backhoe
23:56 katsmeow-afk wait,, if a new crockpot can be had for $15, why would i build one to use a $15 stovetop pot?