Search found 309 matches
- Sun Jan 28, 2007 12:40 pm
- Forum: General Discussion
- Topic: Wireless (inductance) recharging
- Replies: 3
- Views: 4583
If you have an old appliance around you might as well canabalize the charging coil since it's already designed and built for you. Or you could take it apart and copy the design. One point worth noticing is that the charger has a series capacitor so that it is a resonant circuit tuned for when the ap...
- Wed Nov 15, 2006 2:11 pm
- Forum: General Discussion
- Topic: Combined Heat and Power
- Replies: 4
- Views: 4715
This isn't a new idea, it is a good one. Previously the term was co-generationan an idea based on the priciple of generating electricity in a location where the waste heat can be used. Since generation less than 30%efficient the other 70% can be used to heat domestic hot water or for space heating i...
- Thu Oct 19, 2006 4:47 pm
- Forum: General Discussion
- Topic: infrared thermometer
- Replies: 4
- Views: 4991
- Wed Jul 26, 2006 7:09 pm
- Forum: General Discussion
- Topic: Electric Cars
- Replies: 54
- Views: 30879
Putting economics/politics/oil in a context of insignificance only demonstrates a lack of connection with reality. These are the most powerful forces on the planet. Oil is expensive not because it is in short supply or because it cost more to produce but only because it's the best source of energy a...
- Wed Jul 26, 2006 4:22 pm
- Forum: General Discussion
- Topic: Electric Cars
- Replies: 54
- Views: 30879
You can dream or you can do a little arithmetic. $.20 gets you around 3kwh of electricity which is around 4 horsepower-hours. If the 20 mile trip takes 1/2 hour that averages out to 8 hp. Remember that a car has to be able to keep up with traffic and go up hills. It also has to meet safety requireme...
- Tue Jul 25, 2006 6:24 pm
- Forum: General Discussion
- Topic: Electric Cars
- Replies: 54
- Views: 30879
Welcome to yesterday. The electric car was dead on arrival. No electric car was ever made that couldn't have been improved by taking out the batteries and motor and replacing it with a good ic engine. Now the hybrid is the hearthrob of the enviormentally conscious. I think that in time the slightly ...
- Thu Jul 20, 2006 5:37 pm
- Forum: General Discussion
- Topic: 90vdc pwm controller
- Replies: 31
- Views: 20058
- Fri Jul 14, 2006 6:09 pm
- Forum: General Discussion
- Topic: Stock market driving oil prices
- Replies: 5
- Views: 5299
I don't see your logical leap from oil prices to the stock market. It seems that both are driven as much by emotion as by economics. The difference is that the stocks go down when somthing bad happens or is pending while oil prices go up when anyting threatening like a war or hurricane is happening....
- Mon Jun 26, 2006 7:26 pm
- Forum: General Discussion
- Topic: hybrid math
- Replies: 19
- Views: 15116
- Mon Jun 26, 2006 6:50 pm
- Forum: General Discussion
- Topic: hybrid math
- Replies: 19
- Views: 15116
- Thu Jun 15, 2006 6:16 pm
- Forum: General Discussion
- Topic: Changing a bulb?
- Replies: 15
- Views: 10892
- Fri Jan 13, 2006 2:18 pm
- Forum: General Discussion
- Topic: diode resistance checks?
- Replies: 3
- Views: 4072
Re: diode resistance checks?
Resistance readings on a diode depend more on the meter than the diode. Getting consistant readings on known good parts is the best you can do.
The diode check feature gives you go/no go and often tells you the forward voltage of the part.
The diode check feature gives you go/no go and often tells you the forward voltage of the part.
- Thu Jan 05, 2006 3:44 pm
- Forum: General Discussion
- Topic: paralleling a tractor solenoid
- Replies: 7
- Views: 6378
Re: paralleling a tractor solenoid
It should work.
The only problem you might have is the motor spinning before it engages. In that case you might have to employ some kind of delay.
The only problem you might have is the motor spinning before it engages. In that case you might have to employ some kind of delay.
- Mon Dec 26, 2005 11:31 am
- Forum: General Discussion
- Topic: "Perfect" LED current limiting challenge
- Replies: 255
- Views: 222615
Re: "Perfect" LED current limiting challenge
<small>[ December 28, 2005, 08:53 AM: Message edited by: josmith ]</small>
- Sun Dec 25, 2005 8:00 am
- Forum: General Discussion
- Topic: Non Existent Items
- Replies: 10
- Views: 8360
Re: Non Existent Items
The first one I ever heard was "left handed monkey wrench". Monkey wrenches are over anyway so that one won't play.
It's getting cold in here,have to go down to the boiler and get another bucket of steam!
It's getting cold in here,have to go down to the boiler and get another bucket of steam!