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A: Neither these are fixed regulator and the lm140 is ancient. My choice for any regulator is LM117 since i can get 1.25 volts to over 30 volts with two resistor,

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Q: Which voltage regulator is best to use lm140 or lm78xx?
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How do you control voltage and power factor for alternator?

Since it the rate at which the flux is cutting the conductor determines the (EMF) electromotive force which is the voltage, the best way to control voltage is to adjust the speed of the engine through the governor, coupled with an automatic voltage regulator.


Which is better power surge protector or automatic voltage regulator?

The main caused of component failure especially electronic part is power surging or spikes to best protect the parts is to install a good power surge protector.


What is the difference between inverter and voltage stabilizer?

The voltage regulator, which processes and amplifies the input control signals to a level and form appropriate for control of the exciter. ...The excitation system stabilizer is an element or group of elements that modify the forward signal by either series or feedback .*Both are used to mitigate the effects of voltage dips. Dips are characterized by the depth - the retained voltage - and the duration. Short and deep dips are best served by a Stabilizer while long and shallow dips are the province of the voltage regulator.*A voltage regulator has no energy store. It has a transformer secondary winding in series with the supply. When the input voltage moves outside the tolerance band the primary of that transformer is driven to boost, or in anti-phase to reduce, the voltage appropriately. Because the load voltage is kept constant, the power to the load is constant so, when the input voltage falls, the input current increases. The current capability of the supply and the device itself limits the working range to about +/-30 % of nominal voltage.*A Stabilizer has an energy store, so requires no additional input power (in the short term) to boost the voltage during a dip. A Stabilizer can correct a dip to 0 % retained voltage. But the Stabilizer has a limited energy store and so is suitable for short-term effects only - it cannot correct for long term under voltage, for example. Also, the store has to be recharged between events so it is not suitable multiple dips are expected frequently. Typically, Stabilizers use super capacitors, large secondary batteries or high-speed flywheels as energy stores.Unsurprisingly, Stabilizers are more expensive than voltage regulators.


Why does voltage matter?

Voltage is a measure of electrical potential. I understood voltage best when my first semester Electronics professor told the class that voltage is to an electrical circuit as water pressure is to a plumbing "circuit".


What is the voltage of a cell measuring?

They need to use- well the best thing/object/equipment for them to use is a voltmeter!

Related questions

Where is the voltage regulator located on 88 Mazda 323 1.6 injection non turbo?

To the best of my knowledge, both the bridge rectifier and the voltage regulator are integrated into the alternator... I recently bought a refurbished alternator and the spec sheet referred to things like ripple current verification (bridge rectifier) and like regulator voltage verification which imply that both of these blocks are part of the regulator...


How do you build Voltage regulator?

I recommend going to instructibles.com and check to see if they have any good directions. That is my best advice.


How do you control voltage and power factor for alternator?

Since it the rate at which the flux is cutting the conductor determines the (EMF) electromotive force which is the voltage, the best way to control voltage is to adjust the speed of the engine through the governor, coupled with an automatic voltage regulator.


How do you make a circuit that will convert 12 volts DC to variable voltage?

There are a couple of ways. The easiest one, albeit the least efficient, is to just stick a potentiometer in the +12 line coming out of the supply. The best way is to use an LM317 adjustable voltage regulator. You always lose a couple volts in a regulator, so you can only get 10v or so out of a regulated supply. I've also seen how you can "turn up" a 7800-series regulator's voltage by feeding voltage into the reference terminal. This makes sense--the regulator really doesn't care how much voltage it puts out, it only cares about putting out 5v or whatever more than the reference voltage. The problem with doing it this way is you can only go so low, namely to the voltage written on the device's package--if you used a 7805, you've got a 5v-10v supply.


Where is the voltage regulator on a 1989 Benz 560SEL?

The voltage regulator is located on the back of the alternator. Just unscrew the two screws that mount it to the alternator and it falls right out. This is a five minute removal job, and you DON'T have to get under the car. One of the regulator's two brushes is probably worn out. Order a new unit or, if you are adventurous, simply replace the brushes. If you order a new one, it is best to go with a Bosch. Sometimes the cheap ones don't fit!


How do you replace the voltage regulator in an 98 Olds regency 1986 model?

It's inside the alternator. If you haven't already done one (and evidently you haven't) it would probably be best for you to just replace the whole thing. Some special tools are required and it can get a little overwhelming for the first timer.


Where is the Voltage regulator on 1992 subaru loyale?

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Where does the wiring harness from the alternator on an 1984 Chevy Celebrity run to?

The wiring harness from a typical alternator has three wires. One is for grounding, one is from the battery, and the other is from the voltage regulator. In a GM alternator however, there may be two wires or only one wire. It depends on whether you have an external voltage regulator or not, and if the alternator simply grounds itself to the bracket it's attached to. The best way to find out is to trace the wires to their sources.


What would cause a power surge to fry the computer in a 95 cutlass supreme?

Best guess without actually touching the vehicle would be the voltage regulator. on most cars this is part of the alternator. I would start by checking the voltage on the battery while the car is idling and while running ~2000 rpm


Which is better power surge protector or automatic voltage regulator?

The main caused of component failure especially electronic part is power surging or spikes to best protect the parts is to install a good power surge protector.


Where can I find a window regulator for my car?

The junk yard would be the best place to look for a window regulator. Then after that go to any auto parts store and ask them where they would suggest you go. This is the best way to go about it.


What is the best fire extinguisher for height voltage transformer?

the best fire extinguisher for high voltage is a c extinguisher because it can put out electrical fires