Q:I have an old xray machine with a large step down transformer.Its not shorted but the paper insulation looks to dry. Is there a special oil for this? Thanks.

there is no oil for transformers. they are kept dry by all the heat they generate. it cooks the moisture out. if there is a specific reason you are worried, please do tell. is it going to be stored or go unused for a while? is there a lot of moisture in the area of operation? if not, i would not worry about it. it sounds as if it might be near the end of its life cycle as is. on the bright side transformers dont just burn out. there must be a reason for the failure. moisture is not too bad, but water is.

Q:Any help much appreciated here, I cannot understand the following formulas at all. If there is anyone who can please explain in very SIMPLE words I would be very grateful. My exam is next week and I am still stumped on the following.VP/VS NP/NS IS/IP ok this bit I understand, but then here are the QAs that don't make sense to me:Q1) A single phase transformer has 1250 primary turns and 200 secondary turns. Primary V I are 230V and 3A. What are the secondary V I?A) 1250/200 230/vs transpose too: VS 200 X 230/1250 36.8V Why has it been turned upside down?230/36.8 Is/3transpose too: Is 3 X 230/36.8 18.75A Why??The following Q I am even more stuck withQ2) Single phase transformer has a rating of 300/230V, 15KVA. What is the full load of primary and secondary?A)S VI Where did S come from?!Ip 1500/3300 4.55A KVA - is this taken as the V? Not I? Is that why Is 1500/230 65.22A it has been reversed? I'm very confused, please can someone help explain this process to me?

This seems to be about transposing equations rather than transformers! Let's go through it one step at a time. VP/VS NP/NS IS/IP OK So far. Q1) A single phase transformer has 1250 primary turns and 200 secondary turns. Primary V I are 230V and 3A. What are the secondary V I? Voltage first. So you are given Np 1250, Ns 200 and Vp 230 VP/VS NP/NS 230 / Vs 1250 / 200 Multiply both sides of this equation by Vs Vs * 230 / Vs Vs * 1250 / 200 Simplifies to: 230 Vs * 1250 / 200 Multiply both sides by 200 200 * 230 200 * Vs * 1250 /200 Simplifies to: 200 * 230 Vs * 1250 Divide both sides by 1250 200 * 230/1250 Vs * 1250/1250 Simplifies to: 200* 230/1250 Vs Vs 36.8 volts OK. Now the current. You are told that Ip 3 amps VP/VS NP/NS IS/IP Now you know Vs 36.8 volts, you have a choice as to how you set the equation up. You could use either: VP/VS IS/IP 230 / 36.8 Is/3 or NP/NS IS/IP 1250 / 200 Is/3 Either way, multiply both sides by 3 3 * 230 / 36.8 Is or 3 * 1250/200 Is Both give Is 18.75 amps Q2) Single phase transformer has a rating of 300/230V, 15KVA. What is the full load of primary and secondary? There is a typo in this question. The rating is really Vp/Vs {which is supposed to read 3300 V / 230 V} and the maximum value for the product of (Vp * Ip) 15000 (volts * amps) { K 1000 } {Which for our purposes is the same as (Vs * Is) } So we know that on the primary side: 3300 * Ip 15000 Divide both sides by 3300 Ip 15000 /3300 Ip 4.55 A and on the secondary side: 230 * Is 15000 Divide both sides by 230 Is 15000 / 230 Is 65.22 A Hope that helps.

Q:What is an isolated ring transformer?

Isolated ring-type transformer is mainly focused on its insulation performance, between the primary and secondary must have a double insulation, so that the isolation of its own high efficiency, effective protection of equipment safety.

Q:I have a transformer 12v and 12v need to reduce these further to be able to grow or shrink the rotational speed electromotor.Which device or component would be used to reduce the speed of electromotor?I making a mini escalators

A transformer has AC output, so first get DC, which needs a rectifier and capacitor. Following this is a voltage regulator using an LM317 (adjustable 3 terminal regulator). This can delivers ~1 amp. You should know what maximum current your motor draws under load. The first link is an example for 1.25V-15 V with an 18V transformer. Use a 12V transformer, and a 1000 ohm potentiometer as a variable resistor instead of 2000 ohms (R2). This will give voltages from 1.25V to 7.0V DC. Use the formula to calculate other resistors for a different voltage. Get the LM317 in a TO220 package, and you will need a heat sink, at least as big as in the picture. You can probably find a kit of parts for this in an electronics shop.

Q:I broke a small transformer that I found inside of my DVD player, and I would like to have one (not for the DVD player, just separately) I would like the transformer to take in low voltage, such as a few AA or AAA batteries, and I want it to scale that up. Does anyone know where I can get one? If not are there any instructions on how to make an effective yet inexpensive one?Thanks in advance!

A transformer cannot step up or step down DC power. (All batteries are DC). That is part of their nature. A basic transformer is nothing more than two (or more) inductor coils in close proximity, often with a steel core to help with the magnetic fields. All inductor coils are basically a coil of conducting wire, most often copper.

Q:80 kilowatts of electrical appliances need much transformer?

The selection of the transformer is based on the current. 80KW electrical current is 210A210 times (380 multiplied by 1.732) 138kva above the transformer can

Q:Audio output transformer

no. there is no such thing as a generic output transformer, each is sized according to power handling and specific tube/transistor characteristics. some even have additional windings to facilitate inverse feedback, gain leveling, or similar circuits. historically, tube power amps were designed according to the transformer selected because that affects many design parameters. considering the pervasiveness of transistor amp designs that do not use an output transformer, you would be hard pressed to find one in most toys or other electronics.

Q:If on the secondary coil we tapped the center to ground, why is it that the top to middle is opposite in polarity when compared to the middle to bottom of the inductor? Also does this only happen if their is a change in current and not constant current going through the transformer?

the first question think of it as a single coil, 24 V transformer when you measure from bottom wire to the top wire you will measure 24V if you measure from bottom to center it will be 12 V the same from the center to the top maybe it is easier to understand if it were 2 batteries in series images.google.ca/images?hlfrsou at the moment in time that the top is +12, the bottom is -12 therefore giving the 24V this is always like that regardless of the nature of the load Anita

Q:50kva transformer price

2, Transformer (Transformer) is the use of electromagnetic induction to change the principle of AC voltage device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.

Q:Hi. I love the music from the movie Transformers, but none of its in the soundtrack I like the theatrical music played throughout the movie. Its all instrumental and there are no words, very good stuff. I thought it might be Hanz Zimmer who did it but I cant find out if it is him or not and how to get the music. The soundtrack bellow is not the one im looking for.1. What I've Done - Linkin Park2. Doomsday Clock - Smashing Pumpkins3. This Moment - Disturbed4. Before It's Too Late (Sam And Mikaela's Theme) - Goo Goo Dolls5. Pretty Handsome Alukward - The Used6. Passion's Killing Floor - HIM7. What's It Feel Like To Be A Ghost? - Taking Back Sunday8. Second To None - Styles Of Beyond Featuring Mike Shinoda9. End Of The World - Armor For Sleep10. Retina And The Sky - Idiot Pilot11. Technical Difficulties - Julien-K12. Transformers Theme - MuteMath Just the instrumental work done in the movie. If u know who or where I can or might get it, I greatly appreciate it.

Transformers: okorder