@kuruman ... THANKS! I thought I had searched the entire Internet attempting to find a pdf Exactly like that, LoL ... Obviously I gave up the search prematurely.
@jrmichler ... Thanks for the Reply! Honestly it is somewhat satisfying to note the PDF linked by Kuruman solves the problem of...
Hey Folks! Just need a quick sanity check ... Putting in a new 4in well and submersible pump ... trying to wrap my brain around the "physics" of it ... Here is what I ***Think I Know*** :
1) The Energy required to move any given volume of water to ground level can be calculated using M*G*H ...
lundyjb,
In general when discussing RAM, EEPROM and FLASH memories the capacity is given in 2^X format. Therefore 2K represents 2^11 = 2048 Bytes. Assuming the starting address is 0x00, and the memory is organized as 8 bit words, the last address would be 0x7FF (2047d). Directly addressing...
Ooops, I blew this calculation...
184 Magnets/2 = 92 Magnet Pairs ==> 92 * 3000rpm = 276,000 Flux Changes / Min
(not Hz)
276,000 / 60 = 4600 Flux Changes / Second = 4.6kHz Equivalent
For the second case, 75,000/ 60 = 1.2kHz
As the literature I have read suggests induction heating...
I am idly curious about induction heating; specifically for heating 80L-100L of water from 20C to 100C as efficiently as possible with an emphasis on as little waste heat going to the surrounding environment as possible. I have done some precursory reading (...
cabraham,
At the peril of encouraging the perpetual motion crowd, I would like to point out that in a way your ME buddy was right...but certainly NOT the way he was thinking about it...
The actual manifestation is in the form of regenerative braking. Obviously this concept does NOT involve...
babyd3k,
Welcome to PF!
1000W @ 12Vdc is 83A! Switching 83A is a non-trivial feat! 83A is in the welding range of currents, and needs special attention. There are relays capable of handling these kinds of currents, but they are expensive, very expensive. There are semiconductors capable of...
whocouldshebe,
Welcome to PF!
As this thread has been periodically revived since 2004 (!) I think there may be a somewhat more practical way to "capture" high-voltage, low current energy from storms, LOL. The experiment begins in 1867 with a man named "Lord Kelvin", (...
RJK,
Welcome to PF!
Controlling "hundreds of Amps" to a DC motor is problematic and expensive, but certainly possible. I wouldn't go ordering any SCRs until you have fully investigated how an SCR actually works; the short version is that while turning an SCR "ON" is fairly trivial, turning...
Jaynte,
The obvious answer is to "clean up" the channel/bus, perhaps using differential pairs, fiber optics, shielded cable, proper trace isolation, etc. I can't think of a way to "repair" bad bytes w/o adding significant overhead or having a priori knowledge about the data. Even if you sent...
sophiecentaur,
Thank you.
michaeljaycla,
As I have stated, my greatest worry is for your safety. You do not have a clue what you are doing, and you are playing with some very dangerous components. You have continually rejected good advice, and insinuated that the good advice was in some way...
lukex,
You are likely to run into other problems using 3.3M & 2.7M voltage divider to power anything! The nominal current through your voltage divider is 1.5uA ( 9V/6M = 1.5uA). Assuming you have the 2.7M resistor connected to V+ and the 3.3M connected to ground, you would have a nominal...
Hey Tina,
Because I think you are looking for a "real-world" answer, there are some things you should consider:
1) Lead-Acid batteries have a much longer life span if they are not depleted more than 50%. This means that your 125Ah battery should not be discharged more than ~60Ah.
2)...
MJay82,
I would consider a DSO an "essential tool" to anyone who actually builds and debugs circuits, but I am NOT an engineer, I am a hobbyist. Simulation software has come a very long way, and many of the things that use to require breadboards, scopes and meters now can all be worked out...