Latest threads in ⏚ Electrical Engineeringshow only best voted threads
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voltage spike
My electric utility shut my power off for 10 minutes to change a cable on a pole. I was not home. When I returned about 2 hours later my computer sounded like it was on but I knew I had shut it off...
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17 years ago
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Power Grid Synchronization and Reactive Power
Hi, Once a generator is connected/synchronized to a grid and everything is running normally. Can there be a reverse reactive power flow from the grid to the generator? What would happen in cases of...
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17 years ago
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fluorescent light question
In old style long fluorescent tubes, you had the tube plus the starter & the choke/ballast. What's happened to the starter & the choke/ballast in the current compact models? Also I had heard that the...
19
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17 years ago
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Analyze the 1090 MHz channel and simulation with ns-2
Hi all ! I have to analyze the capacity of the 1090 MHz channel used by airplanes' transponders to transmit/receive air traffic surveillance services (such like ADS-B and TIS-B). ADS-B (Automatic...
2
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17 years ago
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Motor Coil Design
Hey Can somebody tell me, how Poles are formed inside the motor with the windings?
6
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17 years ago
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can you help how to interface adc kit with microprocessor kit PLEASE!
I have 8 bit resolution ADC kit which has 8 channels and 8086 microprocessor kit. Now i want the microprocessor to processor digital data output from the ADC. My problem is I don't know how to make...
2
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17 years ago
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POWER System design & simulation.
Hi. I m in search of THE BEST way to design and simulate the electrical power systems. Can anyone, kindly, guide me through the best software or stuff that could help me. Thank u very much.
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17 years ago
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I Need buck-boost 18volts@12 amp Converter
Hi Guys, I need to boost and regulate a cars power system from 11.5 v (drained batt) to 15 volts input (max alt. charging), to a regulated 14~18 volts @ 10~12 amps, about 140~200 watts. I cant find a...
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17 years ago
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Tire pressure alarms
The local TV news announced that all new cars sold in US after this summer would include built-in devices to warn about low tire pressure: more automotive electronics. I found a paper by NHTSA that...
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17 years ago
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FET circuit to switch power to IC?
A 555 circuit running from battery power needs to be turned on and off. A switch for this purpose cannot be added due to lack of space. The "on" signal will be from an existing momentary pb switch...
32
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17 years ago
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Can I run this with a rotary phase converter I use on my Bridgeport mill?
Hi folks, new to the group (as of today). I have a machine (grinder) that has the below tag on it. can I run this with a rotary phase converter. As it is now, I have a 230m outlet that runs to a...
2
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17 years ago
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PowerPlot v2.5 for ETAP 4.0
Hi everyone.... I have ETAP 4.0.0.c software....and i want to run relay coordination with powerplot v2.5...but i can't...because i don't have the button....can you help me to solve this problem ? or...
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17 years ago
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Make your own mig with batteries and inductor ?
Hi chaps, Looking to do some mig welding but only have single phase power which means I wont be able to generate the currents needed for aluminium 3" plate. ie. Somewhere around the 150 to 200Amp...
5
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17 years ago
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Failed Circuit Breaker?
All the downstairs lighting in my house has failed. It is all on the one circuit breaker. When I checked the circuit breaker in the box. It was still in the open/on position. Is it possible for a...
5
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17 years ago
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Cooling performance with 2 fans?
I've got a piece of lab test equipment that's about 30 years old. The cooling fan is very loud and I'm looking for ways to quiet it down. I measure the fan's noise at 53dB (using A-weighted dB meter...
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17 years ago
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