BK Transformer Variable Voltage Power supply
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 500 unit/month
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Products can be customized according to customer requirements!
Applicable scope: suitable for 50Hz ~ 60Hz AC circuit, widely used in machine tools and mechanical equipment, such as driving, marine, wind power, photovoltaic power generation, testing machine, etc., general electric control power, local lighting and light power supply.
With good performance, reliable operation, low energy consumption, small size, wiring safety, applicability, etc., can work under the rated load, is a kind of ideal variable power supply.
Company have 21 years of business history, set research and development, production and sales as one of professional transformer manufacturing enterprises, also is transformer industry of Shandong Province CQC certification (the original Great Wall certification system, certification time longest enterprises (14 years), mainly produce and sell all kinds of transformer products, including: (transformer Division) three-phase dry type transformer, intelligent three-phase servo transformers, BK\JBK1\JBK3\JBK5 control transformer, toroidal transformer, (small transformer Division) pin, potting type, lead type power transformer series products. (high-frequency transformer Division) EE series, EFD series, PQ series, filter, I-inductor, loop inductance etc..
We are able to supply various types of terminal blocks according to clients' requirement,Please contact us so we can offer you the best quality,competitive price and timely delivery.
- Q: A 120 kVA, 7000/277 V (What does this rating mean) distribution transformer has the following resistances and reactances: Rp 5.5 ohms Xp 6.5 ohms Rs 0.007 ohms Xs 0.008 ohms Rc 55 kohms Xm 15 kohms The excitation branch impedance are given referred to the low voltage side of the transformer: a) What's the equivalent circuit of the transformer referred to the low voltage side b) What's the the per unit equivalent circuit c) Assume that this is supplying rated load at 277V and 0.89 lagging power factor, What is the transformer input
- 120 kVA, 7000/277 V (What does this rating mean) Primary voltage rating: 7000 V, secondary voltage rating: 277 V, rated load: 120 kVA It is unclear whether this is a single-phase or three-phase transformer. You probably need to assume it is single-phase. The equivalent circuit of a 3-phase transformer is analyzed as one of three single-phase transformers that could be connected to make the equivalent Y-Y three-phase transformer. The secondary voltage, 277 V, is the line to neutral voltage for a 480 V, wye distribution system. That is a USA standard system voltage. The primary would be 12,124 V L-L, 7000 V L-N. That would a reasonable primary distribution system voltage. Referring the circuit to the low side means changing the primary component values to the equivalent secondary values and moving the ideal transformer to the primary side of the circuit as shown below. To change the primary impedance values, multiply by (Sec V/Pri V)^2.
- Q: I am in dire need of getting a tablet within the next month (due to school work and my one hour long laptop battery life) and I was considering either getting an Ipad 2 or a Transformer Prime. I want something simple yet powerful and I don't want any hassle with navigating the tablet. I already am accustomed to using android (Having a Droid Razr and Droid 1) however I'm not sure if Android is best with getting a tablet. Please Comment!
- an ipad i think
- Q: Is the LTC transformer a regulated voltage transformer?
- If equipped with a load regulator is called on-load tap-changer If equipped with no load regulator is called no-load voltage regulator
- Q: i have a transformer and i dont know anything about it. can someone help me with it.ps: i dont know how many turn the transformer have. dont the voltage either
- You can tell roughly how much power it can handle by the size and weight. Old style power adapters (transformer types heavy), like you plug into the wall, provide 5-10 watts or so and weigh 4-10 ounces. If it is really small it would be a signal level transformer and be in the milliwatt range. The voltage is somewhat irrelevant except to the output. Most transformers will take hundreds of volts before the insulation breaks down. What you can do is find a current limited 10VAC (or so) power source and place it on one side of the transformer. Measure the other side and you will discover the ratio. 30VAC would be a 1:3, 3.3VAC would also be 1:3 but your source would be hooked to the large winding. If you don't know much about electronics, stay away from hooking anything to a wall outlet, the current there is a couple hundred times a lethal dose. Keep your mistakes to letting the smoke out a a few low cost devices. A small wall outlet transformer is a safe way to experiment as the line voltage is isolated and all the shock you can get is limited to the secondary or output of the transformer.
- Q: A I have a 230V/12V, 3A step-down transformer. What will happen at primary side of transformer if I attach a 12V/5A device at secondary side? Will primary side attributes (such as voltage or current) change?
- Primary side you will get 230V , nothing will happen to Transformer, you must be very care full do not touch the primary side just measure it with multimeter
- Q: I like to construct an autotransformer . Input voltage .240Vsingle phase. to use in a system whose operation voltage is 120v. 15 amps 1000 watts can some suggest me as to how i should proceed in calculating size of core ,winding turns, wire sizes etc , now i have 4 inches square E type transformer core . I removed all windings from it. It was used in a microwave .
- You are very much over-complicating the problem. All you need is to get an 18-volt transformer and design a 15 volt voltage regulator circuit based on it. Radio Shack has lots of books, parts, and resources to get you going. Also, check your local public or college library for electronics books. Have fun!
- Q: 50KVA transformer each phase current maximum band
- Hello there: - ★ 1, three-phase transformer rated output current = transformer rated capacity ÷ (voltage × follower 3). This current is apparent current, marked on the transformer nameplate. - ★ 2,50KVA transformer, each rated output current = 50KVA ÷ (400V × 1.732), equal to about 72A. Note that the secondary voltage of the power transformer is 400V instead of 380V. - ★ 3,50 KVA transformer rated current per phase is about 72A, "the maximum energy can be large" according to the ambient temperature, cooling conditions may be. Generally below the rated current, can be long-term operation.
- Q: I heard that a transformer is like a ratio device for amps and volts, but I know there must be more to it. How exactly does it work, and what happens when it doesn't have enough current, but enough voltage?
- There okorder
- Q: I have a Whirlwind microphone splitter box with a direct out and a transformer isolated output. What's the reason for the transformer isolated output?
- A mic splitter is used when you have to feed two different mixers (for example, a front of house and monitor mixer). The main reason for the transformer isolation is to prevent ground loops. You've heard 'emthat 60Hz hum you get when audio equipment is connected incorrectly. The transformer breaks the direct connection between the mic and the second mixer. The mic will get it's ground through the direct connection to the first console. Another benefit is that loading is reduced on the mic. This preserves the frequency response. Also, the transformer isolation prevents any weirdness if phantom power happens to be turned on at both mixers. Back to ground loops now. If instead of using an iso box, you simply Y'd the connections all together, here's what could happen. With that scenario, you've now tied the grounds of two different mixes together. Now, each mixer had it's own path to ground through the 3rd pin of the AC power cable. Now, they have 2 pathsthrough the AC power cable and through the shield of the mic cable and back through the other console. When you get a loop like that, current flows and causes hum, possible shocks, all kinds of nasty things. That's why in audio the 1st commandment is Thou shall have one and only one path to ground. One final pointalways use the direct output of the iso box first. Otherwise, your mic isn't grounded. Greetings from Austin, TX Ken
- Q: actually I've many questions :) I've opened many mobile chargers and I didn't found the usual (bulky) transformer . I found only a small transformer and I think it called smps transformer.1- I can't understand how bulky transformers can be replaced by small ones! what is the idea ?2- are smps transformers connected directly to 220 volt like the bulky transformers ? if no, what is the design of the circuit that makes small transformers are able to be connected to 220 volt ?3- do smps transformers make a voltage drop like the bulky transformers ? or they have another job ?4- some smps transformers have 4 pins and the other have 5 or 6 pins, I know it should have 2 pins for input and 2 pins for output, why some of therm have more than 4 pins ?Thanks in advance, I hope i'm not bothering you because of my many questions :)
- Take a look at Farady's laws of induction. You will see that the voltage induced in a conductor is dependant mainly on the strength of the magnetic field and the speed at which the magnetic field changes, in the case of a transformer, that is the supply frequency. So, if we take a transformer and run it at a much higher frequency we can expect a given transformer to produce much more power, or we could make it smaller as it requires fewer turns on both the primary and secondary, this is what happens in a switching PSU. John m has explained the rest.
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BK Transformer Variable Voltage Power supply
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 500 unit/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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