How could you find the resistance of a resistor?
You can find the resistance of a resistor by applying a known voltage across it and then measuring the current through it. By Ohm's law, resistance is voltage divided by current. You need to be careful to not pass too much current through the resistor, because any significant power will cause heat which will bias the results.
Resistors are also color coded with resistance and tolerance bands. Color charts are available on the internet. They can also be measured with a VOM.
Transfer function of stepper motor?
A stepper motor has a transfer function. The exact function is determined by a motor's individual characteristics. The speed at which it is capable of repeating a position is based on its geometric configuration and size.
The purpose of an oscillator is to produce repetitive sound that will compliment the music being played. They are relatively easy to set up and use. Oscillators will filter the sounds providing a wide range of music.
Which is better high resistance or low resistance resistor?
As little as possible, since the ammeter must be inserted in the circuit,
and the current it measures must flow through it.
What is carry look ahead adder?
When doing binary addition, the carry save adder outputs two numbers, one of which is the partial sum and the other is the sequence of carry bits. By analyzing the carry bits in conjunction with the partial sum, the final sum is determined. In contrast, the look ahead adder calculates the carry bits before any partial or final sum is determined, because knowing the carry bits beforehand speeds up the entire process.
Why you use diode in the circuit?
It depends on the type of diode. Generally, diodes are use for converting AC supply to DC. That is particularly true of silicon rectifier diodes.
Germanium detector diodes are used in radios to detect the signal from the RF. Those same types of diodes are useful in logic circuits as well. They don't handle a lot of voltage or current, but they work fine with radio and computer signals.
A zener diode functions much like an ordinary diode until a breakdown voltage is reached, and then it will conduct the other direction, making it useful for voltage regulation. For instance if a zener is placed across some DC power leads after a fuse, then the unit may be protected from both excessive voltage and being hooked up backwards. If the device is connected to the DC source with the correct polarity, and if the voltage is not beyond the rated value, the diode will not conduct, and thus not blow the fuse.
A light-emitting diode is used primarily for producing light. Arrays of LEDs are used in displays, televisions and computer monitors. Even home and commercial lighting now uses LED technology.
What are common names for some primary discrete components used on circuit boards?
Resistors, capacitors, diodes
Can you use semiconductor as a capacitor?
Transistor either increases or decreases current..
Capacitor stores energy
What does the diagnostic code U1300 mean for a 2002 Saturn SL-100?
U1300 is a communication error between computers If either the SDM (air bag computer) or the Pcm (engine computer) or Abs if equipped loses Voltage for a period of time (4secs) the code will set. The air bag light or the service light will be on if the code is current
How do you read resistor values?
Resistors have standard colors for identification of the resistance value. In order, the colors are: black, brown, red, orange, yellow, green, blue, violet, gray, and white. Reading resistors is a very simple procedure if you use the chart and formula below.
Hold the resistor with the gold or silver band to the right and read the resistor from the left to the right.
http://www.westfloridacomponents.com/reschart.html
When you add more bulbs to a series circuit?
Wiring bulbs in a series is useful in certain applications. For example decorated lighting on holiday trees using multiple bulbs on a single circuit. This is useful by keeping the circuit linear and simple and allows for a single switch. The disadvantages to having multiple bulbs on a linear circuit is that if one bad bulb turns off the whole circuit.
A swamping resistor is usually manufactured from the metal alloy manganin (trade name), or other alloy with similar resistance/temperature characteristics -i.e. practically zero temperature coefficient of resistance. In other words, its resistance will remain more-or-less constant over a wide range of temperature variation.
What VOM range would be selected to measure a DC current in milliamps?
The lowest amperage range on the VOM should be used to measure milliamps. To get a very accurate reading a digital VOM should be used as an analogue VOM usually loads the line that it is reading.
What is a good electrical conductor when melted and is a good insulator in its solid state?
Glass is a good conductor when melted. Most precision glass melters use gas burners to get the glass to a molten state, then they use electrodes immersed in the glass to electrically heat it to the required temperature.
Circuit diagram of prepaid energy meter?
See the related link below.
It is build by using 8051 microcontroller, you can also get the source code from there.
What is the unit used of resistor?
The ohm. It is how much resistance a component or part of a circuit has to the flow of electrical charge when a voltage is induced across it.
Why does the current rise when the voltage drops?
It is not generally true that current increases when the voltage decreases. Ohms law for a simple resistor says that current is proportional to voltage.
However an electric motor supplying a constant mechanical load power will readjust to a lower supply voltage by drawing more current, although if the voltage is progressively reduced the motor would stall.
Switch-mode power supplies also tend to draw a constant power from the supply when the input voltage changes.
What are causes of change in voltage of alternators when loaded?
actully when load of alternator fluctuates it changes the torque at primovers which changes amps so terminal voltage of alternator changes.
Can you charge batteries with a different mAh rating?
You can charge batteries with a different mAh rating if the charger is designed to handle them. You need to make sure of this, because Ni-Cad battery full charge state is not necessarily voltage dependent, but rather is dependent on detection of a change in voltage slope. If the power supply is not properly designed, you can overcharge the batteries, damaging them.
Why would an electric wire be covered with an insulatos such as plastic?
Plastic being nonconducting, it avoids electrocution when covered around electric wire.
What would happen if you use one leg of a 220 circuit and it's neutral to power a 110 light?
it will lite . <P>
<P></P>Well, you sorta answered your own question, if you are talking residential wiring. The transformer in front of the house supplies 220V, center tapped, to your house. (we are talking the USA, right?) Center tapped means that the secondary of the transformer feeding your house is supplying 220, but there is a wire in the center of the secondary coil that has 110 between it and either end of the coil. If you look in your fusebox (breaker box in any newer home) you will see breakers on the left and on the right. The ones on the left side supply power from one end of the coil into your house and the center tap, and the ones on the other side supply power from the other end of the secondary and the center tap. 220 volts goes from either end of the secondary and doesn't bother with the center tap. I think the answer to the question is, you'll make light. be careful fooling with the cords, though.
Why voltage induced when moving coil cuts flux?
The magnetic flux passing the coil changes by its rotation thus induced emf is produced and induced current flows