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What else can I help you with?
What type of speed control system uses a wire -wound potentiometer?
A potentiometer is another name for a variable resister used for voltage dividing. Potentiometers have three tabs on them The two outer most tabs have the full resistance of the device across them. The center tab is connected to the wiper that slides across the surface of the resister. A voltage is applied to the two outside tabs on the potentiometer. A voltage of your choosing will appear across either the left tab to the center wiper tab or from the right tab and the center wiper tab. A potentiometer of this type is used to control the speed output of variable frequency drives. A 10K potentiometer has 10VDC applied across the two outside tabs If the drive sees the full 10 volts it allows the drive to go to full output and the motor will run at full speed. With the potentiometer's center tab wiper at half position a voltage of 5 VDC will appear to the drive. When the drive sees the 5 volts it tells the drive to go to half speed output and the motor will run at half speed. This potentiometer is linear so no matter where the wiper is positioned, the motor speed will follow the potentiometer settings from 1% right up to 100%
Why potentiometer method is an accurate method for measuring potential difference?
Say 'emf' instead potential difference. Because while measuring the same no current is drawn and just balancing the potential across with the potential drop on the balancing length of the potentiometer wire. While balancing the galvanometer shows null deflection. So no current flows through the galvanometer. A perfect balance with the potential difference (EMF) of a cell with potential drop across that particular length.
How do you get 12V DC to 9V DC with a pot and if it can be done what value pot?
The answer is a very-qualified "yes." Assuming that you buffer the output (see below), any value potentiometer can be used to get 9V from 12V. Assuming a round, linear taper pot (see below), you will get 9V at the tap when you turn the knob approximately 1/4 of the way from maximum output. A potentiometer (or "pot") is a 3 terminal device consisting of two "fixed contacts" at the ends of a (typically) wire-wound resistor and one "wiper contact" or "tap" that can be moved along the resistor. If you apply a 12V source to the fixed contacts of a potentiometer, you will be able to adjust the tap to any voltage between 12V and 0V. In many applications, the tap serves as a reference value. This means that you don't load the tap directly but instead buffer it using an amplification stage to drive your load. If you apply the load directly to the tap, it will change the voltage value and generally make your design more complicated. In cases where the load is tied directly to the tap, the pot is often wired differently in a configuration called a rheostat. When you choose your potentiometer, there are a few parameters you want to pay attention to: 1. The value of the potentiometer (e.g. 1K ohms) is the value of the resistance between the fixed contacts when the tap is left open. This value is important because it usually determines the amount of current drawn from the source. If you're replacing a potentiometer that has burned out, make sure to match this value with the one you're removing. 2. The power rating of the potentiometer (e.g. 0.5W) is how much power the potentiometer can dissipate safely. Make sure that the power rating is high enough for your application or it will burn out. 3. The taper of the potentiometer (e.g. linear or logarithmic) describes how the position of the tap changes with travel. Audio applications typically use a logarithmic potentiometer because our ears distinguish sound intensity logarithmically (something that sounds "twice as loud" is probably causing several powers of ten times as much energy to strike your eardrum). If you get the wrong taper, adjusting the potentiometer will feel "wrong" and either the change will be too great or not noticeable for most of the travel.
Where does the red wire in a baseboard heater connect to the black or white wire in the wall?
In the heater you will have two wires. You should then have 2 supply wires from the panel, and 2 wires from the thermostat. The neutral (white) supply wire should go to one of the wires on the heater. The hot (black) supply wire should connect to one wire from the thermostat. The other wire from the thermostat will connect to the other wire from the heater.
When upsizing wire for voltage drop how much smaller can the neutral wire be the next phase conductor?
The neutral wire should be the same size as your conducters
What is the senstivity of a potentiometer?
The volt drop across one mm of potentiometer is the sensitivity of the device. If it is calibrated in such a way that each mm of the potentiometer wire has a drop of 0.001 V then it is so sensitive.
Why is copper wire not used in potentiometer?
Copper wire is not used in potentiometers because copper is highly conductive and would not provide enough resistance for the potentiometer to function properly. Instead, materials with higher resistance, such as nichrome or a graphite-based material, are used to create the variable resistance needed in a potentiometer.
What is jockey in a slide wire bridge?
it is a sexual innuendo for architects. :P
Why should a potentiometer wire be long and uniform in diameter?
Pottentiometer is a device which is used for calculating the internal resistence as well as unknown emf of a cell or a series of cell. Pottentiometer consist of a wire which have uniform length as well as uni form length.By keeping it uniform we get an accurate measurement/
How do you calibrate ammeter using slide wire potentiometer?
set up of the apparatus is arranged in circuit.ES is the standard e.m.f and Rs is the standard resistance of a cell.K1 is connected to position 1 and K2 closed.The approximation balance length is located.The jockey is tapped along a uniform wire until the G shows no deflection.K2 is then switch on the balance length is located accurately.The length ls is measured and recorded together with the ammeter. The procedure is repeated
What is the use of jockey in meter bridge?
In a meter bridge, the jockey is used to slide along the wire to make contact with the resistance wire and balance the bridge by finding the null point. This allows for accurate measurement of unknown resistance by comparing it with a known resistance.
How might a potentiometer be used to give a remote reading of the level of liquid in a tank?
By mounting the potentiometer (pot) in a way that the control shaft can be connected at a right angle to an arm with a float on it, the varying resistance that would come with changing tank level could be monitored from a remote location. Just run a couple of wires from the pot to your remote position. One wire goes to the wiper and the other wire to one end of the pot. Picture how the float in a toilet tank works. Instead of a valve operated by the float, how about having it rotate the shaft of the pot? Should work pretty well.
What type of speed control system uses a wire -wound potentiometer?
A potentiometer is another name for a variable resister used for voltage dividing. Potentiometers have three tabs on them The two outer most tabs have the full resistance of the device across them. The center tab is connected to the wiper that slides across the surface of the resister. A voltage is applied to the two outside tabs on the potentiometer. A voltage of your choosing will appear across either the left tab to the center wiper tab or from the right tab and the center wiper tab. A potentiometer of this type is used to control the speed output of variable frequency drives. A 10K potentiometer has 10VDC applied across the two outside tabs If the drive sees the full 10 volts it allows the drive to go to full output and the motor will run at full speed. With the potentiometer's center tab wiper at half position a voltage of 5 VDC will appear to the drive. When the drive sees the 5 volts it tells the drive to go to half speed output and the motor will run at half speed. This potentiometer is linear so no matter where the wiper is positioned, the motor speed will follow the potentiometer settings from 1% right up to 100%
What is a short to voltage in an automobile?
A short to voltage is when a wire that should not have battery voltage has battery voltage. This would happen if a wire had rubbed through another wire. The other cause would be an electrical component failing and sending voltage down a wire that it shouldn't. NOTE: Shorts to voltage are very uncommon. I specialize in electrical automotive repair, and I can not even recall one time I have seen a short to voltage.
Construction and working of potentiometer?
1.In the potentiometer the resistive material used is may be resistance wire and carbon material. 2.This material is placed in the circular form both ends are open of the resistive wire,these ends are connected to external leads. 3. Then this resistive material encapsulated into the metal or plastic coatings. 4.The movable arm makes firm contact on the resistive material and its resistance is varry acordingly to theire contact positions.
Why you use thick metallic strips to join potentiometer wire?
Thick metallic strips are used to join potentiometer wires because they provide a secure and reliable connection. The thickness of the strips helps to withstand high currents and ensures minimal electrical resistance. This helps to maintain good conductivity and prevent overheating or damage to the wires.
Why does your headlight fuse blow whenever you turn on the headlights for a 1996 Chevy C3500?
There is a short to ground in the circuit. You will need to look for a wire that has rubbed through to the frame or body. Be sure to inspect wiring to the trailer light plug if equipped.There is a short to ground in the circuit. You will need to look for a wire that has rubbed through to the frame or body. Be sure to inspect wiring to the trailer light plug if equipped.
