| Subject | Date Asked | Expert |
|
| VA rating equipments | 11/19/2009 | cleggsan |
Q: I would like to know the mechanisms about how the insulator for cables at high voltages broke down ...
A: Well, when the load is purely resistive the voltage times the current in amperes gives true wattage ...
|
| power converters | 11/18/2009 | cleggsan |
Q: i need power electronics projects for M.E(power electronics). power electronics used in biological ...
A: It is a broad field. Please narrow it down. But, you can do this. Think of an area of the ...
|
| initial conditions | 11/17/2009 | cleggsan |
Q: what is the effect on RC circuit network if initial conditions are not zero?
A: Are you thinking with an AC signal source or DC? In the case of DC battery driving the circuit and ...
|
| solar wind turbine | 11/16/2009 | cleggsan |
Q: im currently doin a hybrid solar wind project. I need help in making mini solar panels,and ...
A: Have you googled/binged for your system design? There are many online system information pages to ...
|
| sewing m/c | 11/14/2009 | cleggsan |
Q: to buy a sewing m/c has a a/c d/c adoptor 12V 1500ma is a strong drive. what RPM
A: You must check the sewing machine specifications. The manufacturer can tell you what speed motor. ...
|
| Total wattage | 11/13/2009 | cleggsan |
Q: If I have an AC source which has three 220VAC lamps connected to it and a power supply (220VAC ...
A: Wattage is calculated by: 1. P (watts) = Voltage X Current 2. P = Voltage Squared/Resistance ...
|
| Lighting | 11/9/2009 | cleggsan |
Q: What percentage power is absorbed by a standard ballast and what percentage is absorbed by an ...
A: I don't know the exact answer to your question, but here is a very instructive site with a ...
|
| three phase convertion | 11/9/2009 | cleggsan |
Q: I have printing machine which required three power supply 5 HP, I have learned that i can made a ...
A: From everything I have learned it is a better solution to just replace the motor with a new single ...
|
| conventional current flow | 11/8/2009 | cleggsan |
Q: What is the direction of the conventioanl current flow inside a battery??
A: Who knows? There are so many theories and conventions for circuit analysis that it is hard to say. ...
|
| Power Factor | 11/7/2009 | cleggsan |
Q: I am conducting an experiment in which I have an auto transformer connected to a 35 ohm load. I have ...
A: Yes, you are doing something wrong. It is very difficult for it to be greater than one unless you ...
|
| Power Distrubution Frequency | 11/5/2009 | cleggsan |
Q: Is there any reason why the US power grid runs on 60hz, and why is it so important to maintain this ...
A: Yes, of course. The history is well known as to why 60 Hz was chosen. In the very early days there ...
|
| voltameter | 11/3/2009 | cleggsan |
Q: what is the history of voltage devices
A: Your question is very broad. What do you mean when you say voltage "devices"? There are many. Are ...
|
| communications project | 10/31/2009 | cleggsan |
Q: I am a 4th year student doing a project in encoding and encryption. The project involves the ...
A: I found some discussion about that in this paper: ...
|
| solar energy | 10/30/2009 | cleggsan |
Q: Sir, Is it possible to use solar energy for my home use? if yes then how and which device should ...
A: Oh, what a question. It is asked every day by someone. But, from a scientific point of view it is ...
|
| measuring of current | 10/30/2009 | cleggsan |
Q: Please tell how can DC current from DC source be measured with the help of ammeter? I think if ...
A: To measure current with an ammeter the current must pass through the meter. So, the circuit must be ...
|
| Final Year Project | 10/29/2009 | cleggsan |
Q: I am in my final year of Graduation . I want list of Projects from your side which can help me out ...
A: I suggest you choose one that a) fits the course requirements and b) is of great personal interest ...
|
| The voltage across the emitter resistor in a Voltage divider Common Emitter Transistor | 10/29/2009 | cleggsan |
Q: How do we go about calculating the voltage across the emitter resistor? I have seen that it should ...
A: Can I assume you are talking about a Class A biased linear amplifier? If so, the correct biasing it ...
|
| Network jammer | 10/28/2009 | cleggsan |
Q: I want 2 design an electronic circuit capable of blocking mobile signals within a given region. This ...
A: Please read through these web sites and be clear about the legality of owning and operating such a ...
|
| Analog To Digital Conversion | 10/22/2009 | Dave Nyce |
Q: Our company uses a tension and distance monitoring system on winch systems. Our tension measurement ...
A: There are several modules on the market for converting a 4 to 20 mA input signal to digital data ...
|
| Current | 10/20/2009 | Dave Nyce |
Q: my questions are these provided we have a lamp which has a rating of 24vdc and .3-.41A. a) I feed it ...
A: a. with the power supply only rated at 0.1A, the lamp will not light as brightly, or may not light ...
|
| electrical | 10/13/2009 | cleggsan |
Q: I'm trying to see how many watts my computer takes and I need help. My computer is a desktop ...
A: If it is a desktop PC I assume you are running it off the 120v ac line. Correct? Power = Voltage ...
|
| PLCC | 10/10/2009 | Dave Nyce |
Q: I recently read about the advent of Power Line Carrier Communication in power transmission systems. ...
A: FSK is in the range of about 1 to 3 kHz, or so. The FSK signal is impressed onto the AC power, and ...
|
| project ideas | 10/7/2009 | cleggsan |
Q: i m an electrical engineering student searchin for some good topics for my project. plz suggest me ...
A: May I refer you to my replies to the other students with the same question? You can find them in ...
|
| eletrical | 10/7/2009 | Dave Nyce |
Q: what is dry contact & wet contact,slow blow fuse?
A: A dry contact is a set of two connections that can be open or closed (connected together). A wet ...
|
| Building a very small electric keyboard | 10/6/2009 | cleggsan |
Q: I'm looking to invenst with an electrical engineer in designing a keyboard synth about 7 inches in ...
A: Design and development of keys with tactile touch is no small task. Yamaha and Casio are leaders in ...
|
| Alternators | 10/6/2009 | Dave Nyce |
Q: my friend and I are building a boat and we have electrical things aboard, if we put an alternator on ...
A: You would probably use the alternator (and a voltage regulator) to charge a 12V battery. If you want ...
|
| 12 vt. DC wiper motor from 110 vt. AC | 10/4/2009 | cleggsan |
Q: The motor speed needs to be variable. A schematic would be much appreciated. ...
A: You did not say how many "quantity" you are thinking, but for a few hundred to a few thousand you ...
|
| 12 vt. DC wiper motor from 110 vt. AC | 10/4/2009 | cleggsan |
Q: The motor speed needs to be variable. A schematic would be much appreciated.
A: ONE: From the looks of the transformer in your image it may not be sufficient (power) to drive the ...
|
| Possible Electromagnet operation? | 9/27/2009 | cleggsan |
Q: It may seem a little strange. I have a hypothetical situation I would like to get some advice/info ...
A: Let me go back to the beginning again. Wires do not become magnetized (since they are usually a ...
|
| Possible Electromagnet operation? | 9/26/2009 | cleggsan |
Q: It may seem a little strange. I have a hypothetical situation I would like to get some advice/info ...
A: Let's go back to the beginning about electromagnets. The magnetic field is created when current ...
|
| Making a lightbulb blink with two batteries, two wires | 9/23/2009 | cleggsan |
Q: My daughter and I worked on a science project from school where one connected batteries via wires to ...
A: It can be done easily if you are allowed to use a christmas tree blinking bulb or something like ...
|
| interview | 9/15/2009 | cleggsan |
Q: im in an egineering class in high school and we were assigned to do an interview with a professional ...
A: Please see my web page at cleggsan.com I am now a semi-retired consultant so I will answer you ...
|
| Parallel Generators | 9/15/2009 | cleggsan |
Q: I have two of the Honda generators EU200i with manufacturers recommended parallel kit reliance HP ...
A: The combining kit has a synchronizing link between the two generators. These Honda units are ...
|
| 120 AC electricity into 18 volt DC electric | 9/14/2009 | cleggsan |
Q: how can you built an electric converter ac to dc. 120 AC electricity into 18 volt DC. for a dewalt ...
A: See previous answer. Hope you get it going. I would not use the 25v ct transformer as it will not ...
|
| 120 AC electricity into 18 volt DC electric | 9/14/2009 | cleggsan |
Q: how can you built an electric converter ac to dc. 120 AC electricity into 18 volt DC. for a dewalt ...
A: The reason power tools use battery power is due to the current surge required for loaded motor ...
|
| circuits | 9/13/2009 | cleggsan |
Q: What size wire would you use to wire a motor that draws 16A from a cicuit?
A: Well, 16 amps from 120 single phase line will most often be too much and will blow the circuit ...
|
| 120 AC electricity into 18 volt DC electric | 9/12/2009 | cleggsan |
Q: how can you built an electric converter ac to dc. 120 AC electricity into 18 volt DC. for a dewalt ...
A: Is this what you are looking for? ...
|
| electrical installation | 9/12/2009 | cleggsan |
Q: what is electrical earth leg? what is electrical earth electrode? what is electrical earth rod?
A: Earth leg: The ground line or leg of the system that is going to earth. Earth electrode: The rod ...
|
| thermocouple | 9/9/2009 | cleggsan |
Q: How to identify J K type thermocouple? are there any testing methods?
A: J Type J (iron–constantan) is less popular than type K due to its limited range (−40 to +750 ...
|
| design of electromagnet | 9/8/2009 | cleggsan |
Q: how to design a electromagnet to produce magnetic field of .5 tesla and diameter of copper wire is ...
A: http://www.geocities.com/CapeCanaveral/2404/design2.html Above is one approach. However, without ...
|
