| Subject | Date Asked | Expert |
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| Career choices in electrical engineering | 6/30/2006 | John F. Iannuzzi |
Q: My son is looking to do a degree next year and is unsure about what job he ultimatly wants to do. he ...
A: David, Questions like this are very difficult to answer especially when a young person is involved ...
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| SMPS current limiting | 6/28/2006 | John F. Iannuzzi |
Q: I am building a DC SMPS laboratory kit for a Uni project that needs to be able to implement about 8 ...
A: It's difficult for me to answer this question without additional information on the "floating" ...
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| help | 6/28/2006 | John F. Iannuzzi |
Q: I am studying electrical and computer engineering in a Greek university. My studies last 5 years, ...
A: You are asking quite a few things! I guess the first thing to ask yourself is "what am I passionate ...
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| help | 6/28/2006 | cleggsan |
Q: I am studying electrical and computer engineering in a Greek university. My studies last 5 years, ...
A: You are thinking correctly to consider the course work and the working opportunities. But, you ...
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| Phase comparator | 6/28/2006 | cleggsan |
Q: May you explain the phase comparison of two signals.Sir actually i am using 2.5kHz of frequency for ...
A: From the Data Sheet: General Description The MM74C932/MM54C932 consists of two independent output ...
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| 7segment display | 6/26/2006 | John F. Iannuzzi |
Q: Will want to know how to build display circuit with one 7 segment display, eight switches for 0 to 7 ...
A: Wolfe, are you sure that this is the correct part number? It sounds very old. I suggest that you ...
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| OUTSIDE STATIC ELECTRICITY | 6/26/2006 | Donald C. Barnett |
Q: CAN A PERSON WALKING AROUND OUTSIDE IN DIRT AND LEAVES CREATE STATIC ELECTRICITY TO GET A SHOCK IF ...
A: A person could get a shock under any conditions that make him be at a different potential as the ...
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| Electrical Resistance Tomography | 6/25/2006 | cleggsan |
Q: I would like to know about electrochemical principle that apply in Electrical Resistance ...
A: Maybe these images will give you some ideas of the current distribution within the electrolyte. ...
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| measuring low current | 6/25/2006 | John F. Iannuzzi |
Q: What other method I can use measuring as low as 10pA current other than IV conventer. Please give me ...
A: Mike, There are quite a few questions here. For the current measurment, you may want to go to ...
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| Phase comparator | 6/25/2006 | cleggsan |
Q: I want to compare the phase of two ac signals i-e whether they are in phase or out of phase.The ...
A: Phase comparison can be done by viewing them on an oscilliscope screen; but you want an output that ...
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| Phase comparator | 6/25/2006 | John F. Iannuzzi |
Q: I want to compare the phase of two ac signals i-e whether they are in phase or out of phase.The ...
A: Rizwan, The output that you are describing is that of an exclusive-OR function. If you could ...
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| transformer | 6/24/2006 | Donald C. Barnett |
Q: ------------------------- dear sir, i want to know whether neutral is present in delta connection ...
A: Generally not. The main idea of a delta connection is to supply a balanced three-phase load. Usually ...
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| Power Supplies | 6/22/2006 | cleggsan |
Q: I have a hand held game that requires 5 volts and a power supply that states 5.5 volts. Will using ...
A: Probably not, but you must know about the current capacities and the regulation qualities of the ...
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| Oscillator | 6/22/2006 | cleggsan |
Q: Someone say that LC oscillator is 'low phase noise'. I don't known about that. Can you explain for ...
A: Phase noise is usually because the Q of the circuit is low - and has a high bandpass for the noise. ...
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| transformer | 6/21/2006 | Donald C. Barnett |
Q: why transformers are built in delta(star)construction. what is the function of star winding if we ...
A: This one is pretty theological. Transformer connections are based on various needs and system ...
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| Medium voltage cable terminations | 6/21/2006 | Donald C. Barnett |
Q: The medium voltage (6.9kv) cables at our plant have had the shields grounded at both ends for 25 ...
A: Yep. It is routine in generating plants to ensure that the MV cables are grounded at only one end. ...
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| power surgeing | 6/18/2006 | Donald C. Barnett |
Q: Why does my lights get brighter when i turn my toaster on please help
A: I am assuming that what you probably mean is, you notice the lights get brighter AFTER they get a ...
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| simple to construct Voice Over SMB -- ASK | 6/18/2006 | cleggsan |
Q: I am trying make voice over either ELF or VLF frequency band , I saw some info reguarding vocoder ...
A: Here is an interesting discussion: ...
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| reg.....transformers | 6/16/2006 | cleggsan |
Q: sir... can u please explain about transformer bus coupler. and please recommend me some sites which ...
A: https://www.abb.com/global/abbzh/abbzh251.nsf!OpenDatabase&db=/global/seitp/seitp328.nsf&v=9AAC72000 ...
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| reg.......transformers | 6/16/2006 | cleggsan |
Q: ...i was very much satisfied for ur answer of my last question..... i would like to know.."why ...
A: Transformers can be connected in series, parallel or any way necessary to fullfil their intended ...
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| Generators | 6/15/2006 | Russ Kinner |
Q: There are so many ways to calculate the needed size of a generator. What would be the most accurate?
A: There is no easy way to specify that data - you need to know if the load can have a high inrush ...
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| Car Schematics | 6/15/2006 | Donald C. Barnett |
Q: English pardon by my defective one. I am Spanish and I have a small company of rent of limousines. I ...
A: I think I understand what you need. I THINK you need a schematic of the 1997 Lincoln Town Car ...
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| reg..capacitors | 6/15/2006 | cleggsan |
Q: ...this is sunil plz explain me "why capacitors are used in starters of incandescent lamps"
A: Incandescent lamps do not require starters; they are resistive in nature. Perhaps you are thinking ...
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| Heating Element in Electric Water Heater | 6/14/2006 | Dave Nyce |
Q: If I put a fork in a toaster, the fork will conduct electricity into my body. Water is also a great ...
A: The water heater elements have a thick insulating jacket over the electrical resistance wire through ...
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| cmos technology | 6/13/2006 | cleggsan |
Q: I see many people say '0.5 um technology, 0.18um technology ...'I don't understand What it mean. Do ...
A: This is the spacing between the circuit paths; hence it has a great deal to do with how dense the ...
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| cmos technology | 6/13/2006 | Dave Nyce |
Q: I see many people say '0.5 um technology, 0.18um technology ...'I don't understand What it mean. Do ...
A: When designing an integrated circuit, you are placing a pattern on the substrate so that ...
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| electrical engineering algebra | 6/12/2006 | John F. Iannuzzi |
Q: My name is Kevin. I asked you a question before, but I think I gave you the wrong e-mail address, ...
A: Kevin, Below is the previous answer. Hi Kevin, Polynomial equations occur frequently when ...
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| signal conditioning | 6/12/2006 | Dave Nyce |
Q: sir, I am astudent of industrial electronics engineering.We are making our project in which we ...
A: 1. the lvdt is driven by an oscillator. the oscillator for that ic can be set from 20Hz to 20kHz. ...
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| mosfet parameter | 6/12/2006 | Dave Nyce |
Q: I see there are many mosfet level (level 1, level 2, level Bsim ...).Each level has many parameters. ...
A: I answered this question yesterday, but it looks like it didn't send. So, here it is again: Yes, ...
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| Waveguide Tuning Stubs | 6/4/2006 | cleggsan |
Q: I guess in the test that I am taking and the multiply choice answers that they are giving are just ...
A: A waveguide is not a 2 wire transmission line; rather it is a square/rectangular tube that the em ...
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| Waveguide Tuning Stubs | 6/4/2006 | cleggsan |
Q: What is the electrical equivalents of the E-plane waveguide tuning stub and the H-plane waveguide ...
A: Think of them as a termination, much as a termination on the end of a transmission line. The tuning ...
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| Automotive Electronics Circuits | 5/31/2006 | Donald C. Barnett |
Q: I would like to know how to apply an artificial load to an electronics circuit so that it would ...
A: I feel your pain. You could measure the resistance of the light bulb, but that would only work it it ...
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| Electric to outside shed | 5/30/2006 | Donald C. Barnett |
Q: What is the max amps I can pull through this setup?I only hooked it up for an outdoor light and to ...
A: Well, according to the NEC, you're good on a #10 off of a 15A breaker, so the breaker is the ...
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| transistor with relay load | 5/30/2006 | John F. Iannuzzi |
Q: Iannuzzi, I am not a electronic student but I like it very much. So I learn it by myself. And I have ...
A: Thanh, When you energize an inductor, in your case a relay coil, current flows through the inductor ...
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| transistor with inductive load | 5/30/2006 | Dave Nyce |
Q: I am not a electronic student but I like it very much. So I learn it by myself. And I have a problem ...
A: Yes the equivalent circuit for driving a relay is an inductor. When powered, the inductor has a ...
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| 12 volt LED | 5/29/2006 | cleggsan |
Q: I am trying to install 12 LED taillights in my motorcoach. But the coach is 24 volt. I believe the ...
A: If you use a dropping resistor it will dissipate much valuable heat and place a serious load on the ...
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| Required transformer VA rating | 5/26/2006 | Donald C. Barnett |
Q: These four PCs are in a show display and yes I forgot about the monitors etc. If the 240V I have is ...
A: Lets assume you're getting this 240V single phase from a panelboard (most common). To get this, you ...
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| Required transformer VA rating | 5/26/2006 | Donald C. Barnett |
Q: I need to choose a transformer to go from 240V single phase to 120V single phase to run four PCs ...
A: Assuming you really do need a transformer (that is, wherever you are getting your 240V doesn't have ...
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| electricity | 5/24/2006 | Dave Nyce |
Q: why do you NOT need 3 wires for 220 volts and you need 2 for 120v or do you need 3 wires for 220v's
A: I assume that you're asking about the wiring in a house in the USA. There are two phases of 110VAC ...
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| Triac controlling Electric Motor | 5/23/2006 | cleggsan |
Q: So for a motor, reducing the voltage across it does not increase current through it? So as long as ...
A: Reducing the voltage will decrease the current as long as it is running. But, when it reaches the ...
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