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transformer

A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any one coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil.
Transformers are most commonly used for increasing low AC voltages at high current (a step-up transformer) or decreasing high AC voltages at low current (a step-down transformer) in electric power applications, and for coupling the stages of signal-processing circuits. Transformers can also be used for isolation, where the voltage in equals the voltage out, with separate coils not electrically bonded to one another.
Since the invention of the first constant-potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electric power. A wide range of transformer designs is encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume, to units weighing hundreds of tons used to interconnect the power grid.

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  1. A

    Hi guys, can you tell me if this transformer has leaked, it's a PCB for a baxi 105he

    Hi guys, can you tell me if this transformer has leaked, it's a PCB for a baxi 105he
  2. T

    danfoss ebi transformer 3 wire lead

    Why when you buy a new transformer from the stockists why dont they sell u the 3 wired lead with it when their docket says u must replace it to 3 wired. Is it totally essential to do so
  3. T

    ebi transformer

    Hi guys was wondering do any of yous know do the suppliers still sell the old danfoss ebi transformer used on bentone or sterling burners? Some other guy in the last 6 mths changed oil pump and electrodes and leads. Now getting no spark at all but oil isnt a problem. Im in n.ireland if any of...
  4. T

    boiler not firing up or locking out

    hi can anyone tell me what the fault would be in a boiler ive been looking at.its already had the transformer replaced and is firing again.but now when it kicks back in again on stat it doesn't fire up or lockout just blows cold air,im thinking control box or photocell.its a old boiler with a...
  5. E

    Keston Qudos 28s

    I have no previous experience on Keston boilers but have recently been asked to check out two kestons in a boiler room have established it doesn't come under commercial, they have stood ideal for over a year, but fired up ok after relevant checks, purge, turn pump over manually etc. The 55c ok...
  6. B

    ideal stelrad e type cf 60 boiler

    hi has anyone got a manual on the ideal stalrad type e cf 60 boiler . I have found a manual for the 240 volt gas valve version but this one has 24 volt gc 4139957
  7. H

    Continuous Rated Site Transformer

    10kva single phase 230v to 110v CTE 4x16amp protected by 2x16amp DP MCB's 2x32amp protected by 2x32amp DP MCB's It's in the way. Offers please. Can be air lifted to a location of your choosing.
  8. M

    Portable 110v transformer from screwfix....

    Just wondering if they are any good? 3kva with 2 x 16a sockets for £57 http://www.NoLinkingToThis/p/portable-transformer-with-2-output-sockets-3kva/84144 or should I look for better one?
  9. A

    Using 110v drill with 240 mains.

    Can you? Just wondering as my transformer has just died.
  10. M

    Worcester Bosch 35HE Greenstar F0 Fault code

    Hi Hoping maybe sombody can help with this. Scoured quite a few forums, but this fault code (F0) never seems to be mentioned! The boiler works normally most of the time with no problems. However, when the boiler fires first thing in the morning on the timer, it will lock out with error code...
    • mrdjfarrell
    • Thread
    • boiler bosch button code fault greenstar reset transformer worcester worcester bosch
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  11. M

    Worcester 24i junior transformer question

    Went to the above boiler..(not a greenstar) and the boiler keeps going into lock out. Checked all thermisters and and seemed to be fine, no voltage to fan but heard a cackling noise coming from the transformer. Would this cause the boiler to go into lock out? And would it be best just to replace...
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