Q:I have been reading about pulse transformers and i am curious if there exists a pulse transformer that would take 1 pulse/second or even less and convert to very low voltage high current. If not, would it be possible to make one? Any info is very appreciated! Thx!

Pulse transformers can be wound to any turns ratio that is desired. That being said pulse transformers have small cores and therefore handle small amounts of power. You can find cores on those old mother boards that are no longer in service and junk computer power supplies also have a couple of cores. These toroids were normally used as filter inductors to remove spikes from DC or low frequency lines. You can easily rewind them for pulse transformers.

Q:I use transformers in my circuitry all the time but when a transformer is say a secondary 12v 1a transformer than what does it mean by 1 ampis it that the secondary winding wire will pop after 1 amp doo to the simple thinness of the wire? or that the ohms of the secondary coil, when using iv/r, 112/12so does this tell you that the coil is 12 ohms?please don't give me other information about the transformer just answer the question please.

It means the transformer secondary voltage is 12 volts and the current rating is 1 amp. If you put a higher current load on the transformer it won't pop, but it will overheat and the insulation will degrade faster than if the current was kept below 1 amp. If the current is allowed to go too high, the transformer will fail in a short time.

Q:Altium designer DXP transformer in the same name how to change?

You can re-draw one, you can also copy the source file in the transformer to change it. As for the PROPERTIES you said in the EDIT PINS NAME option, that is only your name to the pin, help to understand. For example, a transformer with only one primary edge and one secondary side, and the same name (two points of the graphics port) are located in the top, 1,2 pin on behalf of the original side, 3,4 pin on behalf of the secondary, Or 2,4) is the same name. 1,2 PIN (PIN) name (NAME) were Pri +, Pri-; 3,4 pin were Sec +, Sec-. Obviously here pri and sec are primary and second abbreviations, namely the primary and secondary, and +, - can be understood as positive and negative, can also be understood as the same as + (or -) at both ends of the same name. Transformer with the name of the most obvious label is the graphics on the two points. You in the schematic after the change and then on the line. I am also doing this, need to change the same name. You can exchange.

Q:Three-phase transformer how to calculate the current, ah, the formula is?

Calculation formula and empirical formula of transformer secondary current Three-phase transformer current calculation formula I = S / (root number 3 * U), where U is the transformer line voltage, KV Transformer Current Experience Port Algorithm: Primary Current I ≈ S * 0.06 Secondary Current I ≈ S * 1.5 For example: a 500KVA transformer to calculate the current and secondary current, with the current formula I = S / (root 3 * U) I = 500 / root 3 * 10 = 500 / 17.32 ≈ 28.8AI = 500 / root 3 * 0.4 = 500 / 0.69 = 724.6A with the transformer current experience calculation formula: I = 500 * 0.06 ≈ 30A I = 500 * 1.5 = 750A Transformer operating load requirements For example: a 800KVA10 / 0.4KV transformer, according to the first and second current calculation, a variety of load current is how much? Solution: Primary current I = S * 0.06 = 800 * 0.06 = 48A Secondary current I = S * 1.5 = 800 * 1.5 = 1200A Low load: Primary current I = 48 * 15% = 7.2A Secondary current I = 1200 * 15% = 180A Reasonable load: primary current I = 48 * 50% = 24A Secondary current I = 1200 * 50% = 600A Full load: primary current I = 48 * 75% = 12A Secondary current I = 1200 * 75% = 900A

Q:A 2200/220V, single phase transformer has the following resistance and leakage reactance referred to primary: R5.6 ohms, X22 ohms1. calculate V2, I2 and cos(2) when the primary is supplied with 2200V, 9A at a lagging power factor of 0.8. Neglect Io.

I2 I1[V1/V2] 9[2200/V2] I29[2200/20] 9[10] I2 90 amperes. V2 220 volts

Q:Exactly what is the storyline of the Transformers. As far back as I know, there were two brother, Unicron and Primus who fought each other because Unicron wanted to suck up Universes. But where did these two come from? Does it even say?

I am a fan but I haven't been able to find that out myself, if you find out let me know.

Q:I have an an iPod touch with 3.0 and I installed a jailbroken app called Transformer. It makes thr iPod look like an iPhone. But when it resprings, nothing changes. Please Help!

I feel your pain, but Transformer only works on itouches with the firmware 2.2 or under. If your still want a iphone look-a-like this is what I did and I works great Maybe even better than tranfromer!: 1. Download iCall, textPlus, and Flicket off app store. 2. Download CompassF app off cydia. 3. Download theme iPhoney theme off Cydia 4. Download Better 3G WiFi (turns wifi bars into 3g) 5. turn on the 2 themes ATT bars will be added w/ iPhoney automadiclly 6. Download SBSettings, extras, and turn on the numeric battery. (like 3Gs) 7. Lastly, if you want to go that extra mile Im working on a Theme that changes the iTouch settings to iPhone ones with wallpaper on main page. And thats it, the Icons and names of the 3 app store apps should change to camera, messages, and phone. The spotlight should say, Seach iPhone and thats pretty much it. Not only does the phone work with wifi now looking just like the iphone dialpad, and so does messages. So I think this is better than Transformer and wont mess up ur touch like transformer would. Hav fun messing with your friends minds lol! :)

Q:if the transformer in a wall charger steps down the voltage from my wall to 120V does this mean i could use it in the reverse direction as a step up transformer? I want to combine 4 car batteries making 48V and plenty of amperage, but what can i use to get it up to 120V for my 1/2 hp motor?

Not you can't really because transformers need AC (alternating current) to work. So your charger has got a rectifier in it and possibly some kind of a regulator circuit. You could use 10 car or motor bike batteries in series to get 120 VDC but PLEASE BE CAREFUL. You could get a nasty shock at 120 volts.

Q:Hi, I replaced two 12V 20W halogen bulbs (wired in parallel) by two 3W 12V LEDs also in parallel. The problem is that the transformer (in a kitchen fume hood) seems to shut down when both LEDs are connect. It can take one but the two cause problems. I guess this might be caused by the very low resistances of the the 2 LEDs connected in parallel that short circuit the transformer? How can I reduce this short circuit without causing significant voltage drop for the LEDs? I tried using them in series but they won't work because they will then each have half the required voltage. Of course the idea is o find a solution that will also not significantly interfere with the energy savings associated with the change of halogen by LED. Btw, the LEDs are MR16 and have their own little voltage regulator/stabilizer circuit (or whatever that is).Thanks!

Low Voltage transformers (ELV or MLV) are tricky. Just because you have the voltages the same doesn't mean you have the right current being drawn by the LED's.It could be too low or too high. Were the original halogens MR16 form factor as well? I'm guessing the xfmr was specifically designed for a set voltage/current/power. Consider this: Two 20W halogens 40W. PowerVoltage*Current 2012*I I 1.67 amps through each bulb, 3.33 amps total drawn from the xfmr Transformers operate on the principle of Power in Power Out. The xfmr is probably designed to provide 40W, regardless of whatever current draw you put on the transformer. The LED's only need 6W from the xfmr. However, the xfmr probably doesn't care. It's still spitting out 40W at 3.33A. 0.5A (2*3W/12V) is all the LED's need. If the xfmr is still trying to provide 40W at 0.5 amps, the output voltage is compensated up to 80V coming from the xfmr. Most LED bulbs have protection for this in the engine, (the regulator/stabilizer as you call it), called over-voltage protection. This is probably whats causing the bulbs/transformer to fail. The problem is, especially with transformers, is that you must match the load. If the transformer is expecting a specific load and you give it something it can't handle, it'll either destroy the load or damage the transformer. The easiest way to avoid this is to always match the power of the original load to the load you intend to put in. 40W of halogens should be matched with 40W of LED. This is the gimmick with retrofit bulbs like the MR-16. You're not really saving any energy when you use retrofit bulbs. You just get a longer bulb life and a lot more light from the same power draw. LED lighting is a niche market. If you can't figure it out, wait a few months and LED lighting fixtures will decrease as the market is flooded with new product and becomes more competitive. I'd recommend investing in something like that instead of retrofitting.

Q:Anyone know the name of this shoe like transformer.

There are four shoe transformers. I am assuming you are talking about the ones that look like Nike Free 7.0 Running shoes made by Takara and available in Japan. There is Convoy ( Red White and Blue), Megatron (Black and Grey), Starscream ( Maroon and Black), and Marine Convoy ( White, Blue). These are exclusive to japan. However since there is no picture, I can also assume you may have a Kids meal shoe Transformer from Subway. Good luck!