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how can I generate 12 volts AC or DC using only household water pressure, and what is the smallest this generator can be? Can it be smaller than 120cc?
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This popped up during a related search:
http://www.ashdenawards.org/
I haven't looked at it...
By M Griffin on 4 December, 2009 - 1:03 pm -
You need to calculate the energy available based on physics before you go any further. What is the...
By Walt Boyes on 3 December, 2009 - 10:37 pm -
If you can find it, 20-something years ago Smithsonian Magazine did a feature on the use of...
By curt wuollet on 3 December, 2009 - 10:30 pm -
Yes, see if you can conveniently enlarge the stream :^). Seriously though, people need to consider...
By Bruce Durdle on 3 December, 2009 - 8:55 pm -
Check out http://www.ecoinnovation.co.nz/c-55-hydro-generators.aspx
Mike can customise a system...
I've been interested in all the information on this topic. I have a small stream running right...
i have some confusion about control valve choking phenomena...
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Just my two cents worth:
Noise and vibration due to chocking in gas/vapor passing CV is the...
I have some problems on the TCI.
it stops when the operating system of the HMI start.
it stops when the operating system of the HMI start.
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eng_ahmad,
i think there is a problem in the dongle try to remove it and return it again then...
Last week we tried to do fuel change over after two month. we did 6 time but it was not successful.
I am learning more about MODBUS, and I would like to know how I make the Modbus device communicate with the PC.
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http://izitechnology.com/ has a modbus to email gateway that is very good...
Assistance on sensing wind velocity and wind speed using analog inputs to an Ethernet I/O controller.
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By M Griffin on 4 December, 2009 - 2:56 pm -
Different sensors have different physical characteristics, so you need signal conditioning if you...
Wasim,
The system architect is me. If I had to retrofit into legacy applications I may think...
By Wassim Daoud on 3 December, 2009 - 5:28 pm -
hello,
Are you using OPC? OPC is an open standard, i am really curious about your system...
All card failure in Mark VIe panel
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>Can you tell us exactly what GE did to
>solve this problem. We are in contact
>with...
>we got same problems. you must contact
>Ge to install the last switches version.
Can you...
By lemed on 3 December, 2009 - 2:21 pm -
we got same problems. you must contact Ge to install the last switches version....
NetDDE diagnostic software for monitoring and displaying nodes?
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By Jeremy Pollard on 3 December, 2009 - 11:02 pm -
Check out DDESPY ... an older program that can 'see' the comms... not sure where to find it but...
Once again, we have a great unit that is obsolete. I am hoping someone knows of a good field mountable wide temperature range single loop controller that can be polled via RS485 or HART.
HP ratings of induction motors
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By JLo on 3 December, 2009 - 2:39 pm -
What you were reading in the motor nameplate was the rated power (800 hp), and the permissible...
EPLAN vs. AUTOCAD Electrical
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I bought ePlan compact for $500 two months ago. It is nice, but extremely cryptic! There is...
DB addressing DataType as S5timer conversion to Proface.
GE PLC control vs. AB-Rockwell: which is better?
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By bob peterson on 2 December, 2009 - 2:53 pm -
I have done mostly AB with a smattering of GE along the way.
The AB programming environment is...
By Steve Myres, PE on 2 December, 2009 - 2:27 pm -
Either will do the job.
I find the GE hardware a little cheesy looking but haven't seen a whole...
Most of my experience is with GE 90 series PLCs and the old System One (Kony, TI305, DL305). While...
GE 7FA Hydraulic oil leak from GCV#03 v/v
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By Greg Ponto on 2 December, 2009 - 1:36 pm -
Isolation valves can be installed on the hydraulic oil supply lines for the GCVs/SRV and IGV. This...
How to upgrade an intouch application
what is load ANGLE?
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By Phil Corso on 30 November, 2009 - 11:41 pm -
Mohan... obviously it is harder to describe "load-angle" than it is to...
Bruce,
You've used this description several times before, of a machine increasing speed when...
By Bruce Durdle on 28 November, 2009 - 2:45 pm -
Hi Mohan,
Since you are a mechanical engineer, I will try to explain using a mechanical...
By Bruce Durdle on 27 November, 2009 - 2:23 pm -
The rotor of the turbine and generator is a device that stores kinetic energy. It is in balance...
like to know how di I make the Modbus device communicate with the PC using Maxdna DCS system
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By Raffi on 30 November, 2009 - 10:23 am -
II am faced with the same challenge with the Max Controls DCS system.
Look to see if your RTU...
LCN Suspect Alarm after connecting app-node TPN server with OPC optimizer
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By SPR on 30 November, 2009 - 12:35 am -
Dig in a little deep. Check system maintenance and system errors from Even history menu in system...
In the architecture the tps app-node is before LCNE. So basically the app-node is connected to LCNE...
green n yellow cable segments between nodes should have same length. Moreover, in LCN suspect...
Having LCNA and LANB with different lengths might cause a problem. We have not been receiving an...
Run lcn diag - and see "net media" -reset time- try to connect LCN A and look on...
Both cables must have the same length....
Can MSDE data base administration gets integrated with EIMS or there Will be compatibility issues?
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By M Griffin on 28 November, 2009 - 12:26 pm -
What do you mean by "integrate"? What are you trying to accomplish that you are not doing...
Looking for CM104 communication module documentation
Whether each machine in a redundant server(s) in a 88xA system of ABB requires a license dongle
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Licensing can be applied to either a single dongle or a single Ethernet card, redundancy in...
We have 3 Aspect servers and 3 pairs of Connectivity servers and don't have a dongle in any of...
How to communicate with ADAM 5000 Hardware using a serial program made in 'C'
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By Roy Matson on 27 November, 2009 - 6:57 pm -
Ritika,
First of all check your cable with a multimeter if you check the voltage between...
By curt wuollet on 26 November, 2009 - 1:14 am -
That illustrates the point :^). Someplace along the line, the symbols I put in to illustrate were...
SERVO VALVE NULL Bias Current
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An update (sorry for not updating for so long)
1) The turbine with reversed (positive null bias,...
LCN slow down when connecting TPN server to Matrikon ODH with OPC optimizer on the App-Node
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By Gilbert Waniandy on 26 November, 2009 - 4:06 pm -
Hi Lalas,
My name is Gilbert Waniandy and I am the Support Manager for MatrikonOPC.
I would...
Looking for advice on motors used on homemade vibrating conveyor control
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By Roy Matson on 25 November, 2009 - 11:44 pm -
You have it right. the solenoid type are used in mining feeders. As you say they are fixed...
A sensor that gathers relative position in coordinates (X,Y) from one object to another.
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By Roy Matson on 25 November, 2009 - 11:39 pm -
How about two ultrasonic or radar level transmitters one for X one for Y mounted on the vehicle...
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Mustgo, n.:
Any item of food that has been sitting in the refrigerator so
long it has become a science project.
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