Converter Definition and 254 Threads

Hello, I don't quite understand the buck converter in continuos mode ... looking at the graph for inductor current on wikipedia, at t=0, there is a nonzero inductor current, Imin ... how is this possible when the inductor current cannot change instantaneously (assuming it starts at zero...

Hi all, I'm trying to build a transformerless converter unit, that will take an input of 240v a.c, and will output 12v d.c. I used a voltage divider to get a 16v from the a.c supply of 240v and connected my rectifying circuit across the 16v. I got an output of 14.59v. But on connecting the...

Does a polarize simply filter photons or does it change the polarization of photons (as well)? let's consider only one photon being sent, at a time, via the polarizerI think the answer might be that: for photons polarized at say 45 degree to the horizontal (or vertical) plane of the polarizer...

It only seems to have been mentioned a couple of times in passing, but Alan Eliasen's Frink calculator and programming language (https://frinklang.org/) makes unit conversions simple (converting to SI internally then back to any desired target units. User-defined units may be added, too.) Very...

i am working on GE GAS TURBINE's Torque converter beginners understanding ... em so confused into a clutch and torque converter ... Can u please briefly make me understand the function of both ... and importance ...

I was building a simple bat detector for a child and also built one for me: http://home.earthlink.net/~bat-detector/SBD2Parts.html Now I was wondering whether it would be possible to built a simple AD converter, which can be fed the amplified signal of the microphone before it enters the...

I understand the difference between AC and DC, and i also understand how an AC transformer works... but I guess not completely. My question is why can't a DC use its emf to create a lower voltage current like AC can? Does the DC's emf accrue over time thus making its transformation short...

Hi I have been using a DC HVDC converter for a project. I am a little confused with the full load and no load characteristics for this kind of converter.The user manual states that at full load "X" Volts of input gives "Y1" volts output and for no load that same input voltage gives "Y2" volts...

Homework Statement Hi everyone, I am now studying the Flyback converter as a component in a SMPS, my question is on the transformer unit on the converter. There are Primary side and Secondary side in the converter, at any given moment only either of the sides conducts, that is, when...

I am wondering, In a flyback inductor used for a boost converter, what inductance would be required to produce 5kV across the flyback inductor in 1mS with a current of 10mA? I know the formula would probably be V=L di/dt but I'm not sure how to rearrange it to get the correct answer.

How can you design a digital to analogue converter such that it has a squared output. i.e. the analog equivalent of the digital step is smaller at the lower voltage levels than at the higher voltage levels

Homework Statement On book 'Switching power supplies A to Z' page 73 at the bottom, (please kindly proceed to the link below for that page) http://books.google.com/books?id=cuyyQ3N_8hIC&lpg=PP1&dq=switching%20power%20supply&pg=PA73#v=onepage&q=switching%20power%20supply&f=true It stated...

I am just wondering, what is the difference between a DC/DC converter or DC/DC Controller? It seems to be a same voltage converter IC?

Designing 8-bit Binary to BCD Converter I have to design and implement an 8-bit binary to BCD converter **using only ICs** I have an algorithm that works just fine in converting an 8-bit binary to BCD that can be sent to three 7-segment displays. It is called the double dabble method. Please...

In the flyback inductor equivalent circuit and also in general, why is magnetizing inductance represented in parallel to the actual inductance? We can have just the Magnetizing inductance in series with the leakage inductance. Also, in flyback converters why does the secondary voltage get...

http://www.nuenergy.org/pdf/static-electricity-converter.pdf

Hello, I am having the following problem. Basically, I am supposed to create a simulation in multisim for a flyback converter. A basic model, no feedback needed. I have 120 dc power supply, transformer with ratio of 26. Output voltage 5 V and power delivered 35W. All that controlled by mosfet...

http://img146.imageshack.us/img146/9356/capturexh.jpg Attempt at Solution: Well I put R1 and C1 in my RCL circuit, and then used the GIC rules to calculate the "L" inductance for the remainder of the circuit using R2,R3,R4,R5, and C2. So I did X = (Z1*Z3*Z5)/(Z2*Z4) where Z1=R2, Z2...

As a hobbyist I have had an interest in SMPS power supplies for quite some time, but have never gone past casual study of them. I understand the theory, but have difficulty with the actual implementation of things like a high-side switch mechanism for a P-Channel Mosfet. My goal is to...

Homework Statement This is question 2.78 out of Sedra/Smith Micro electronics textbook. (6th edition) Homework Equations The Attempt at a Solution I'm confused as to how the authour of my textbook draws this conclusion in his work. (I have it circled) By the way, in the given...

I am looking to convert a few thousand .fits files to .txt, I have used fv viewer. This however can only convert one at a time, does anyone know of a batch converter for .fits to .txt. Thank you in advance for your help.

hi all, can some one tell me where can i find an OnLine Energy Converter ? thank you

Hello All, I am interested in constructing a small Hofmann apparatus for electrolysis (as a hobby), like this kind: http://en.wikipedia.org/wiki/Hofmann_voltameter" I am confronted with the choice of either using a bunch of 9V batteries, or some kind of AC/DC rectifier. As I am a...

I need a good and advanced PDF to text converter, that can also Scanned JPEG to Text Converter . I found this http://www.ocrcοnvert.com , but I need to know if there are more ??

Hi All, I'm working on my final year project on synchronous buck converter (SBC). In this project, i have to use an adaptive gate drive (AGD) and a compensator to switch on both of the SBC switches. The AGD is connected to the second switch (Low side switch) of the converter meanwhile for the...

how to design a buck converter that will have less power losses

Hi, I'm working on a currency converter and have some trouble trying to understand how to do the callback function. What I have is 2 menus with source and target currency. I also have an edit box to enter the amount. I have to press a convert button and the output is displayed in another text...

Hi guys, I need to convert a sine wave to square wave, sine wave is running at about 1.5 GHz, so I had an idea of using comparator, but I am afraid that most of the conventional op-amps can't support my speed requirement. Any advice and reference circuits please.

Hello Everyone, I am trying to put together a PI controller for a boost converter. Vin = 150V Vout = 300V (Require this much boost) Switching Frequency = 25KHz I am attaching a schematic in PSPICE. Please , someone, tell me if the connections are right. Also V-PULSE / SAWTOOTH = (0...

Our Transistor is a Voltage to Current converter can we form a Voltage to Voltage converter too physically or not?? can someone help me in this matter pleasez

Hello all! I just moved to Ireland with my U.S. music equipment in tow, and after doing a little googling I'm still having trouble getting the answers I'm looking for. So here goes: I bought a converter which has a transformer in it that is capable of handling 50W, as well as a "solid...

I'm an entry-level engineer, and I have a design question for the forum: I'm designing a multiphase buck DC/DC converter which will convert roughly 65VDC to 52VDC at up to 150A. I'm using 4 phases, so inductors, etc will be designed to about 40A/phase, MOSFETS will be paralleled for less...

hi, i am pretty new with electronics, and i can't find any simple boost converter circuts on the enternet. i would like to make the circut THE MOST SIMPLE i can, with the fewest possible parts. for a power source, i have 9v-1w. for the output power, i would like to send a thin spark from 1...

hi, i am pretty new with electronics, and i can't find any simple boost converter circuts on the enternet. i would like to make the circut THE MOST SIMPLE i can, with the fewest possible parts. for a power source, i have 9v-1w. for the output power, i would like to send a thin spark from 1...

Hi Guys, I am in bit of a spot here. I do programming for hydraulic presses. If anyone is unfamiliar this entails programming PLCs to automate a press or a machine. The problem I face is that the output current from the PLC is between 4mA - 20mA. I have a proportional valve that needs a...

Hi. I have a blower motor I am trying to run at 20v from a 12vdc system. At 12v it draws 12A, but I need it to get to a higher RPM. I'm not sure what the surge current is (turning on). Anyway, I was talking to someone else and they didn't think increasing the voltage with a BC would increase the...

Hi. I love it when one's college degree has real world applications :-) It has been 25 years since I got my B.S. in Systems Engineering from USNA. However a detour in the Marine Corps, then 15 years as a remodeling contractor has left my EE skills practically non-existent. I have an RV with...

Both converts higher DC voltage to lower ones, no? Thanks for answering. =)

Homework Statement I have to make a Buck-Boost converter for my Design PE class but the problem is even though i have read about them i seriously don't know where to start. I have to make calculations and choose a mosfet, load, capacitor and an inductor but i don't know how. Homework...

i need to know if i can convert the high amplitude low frequency based energy to low amplitude high frequency energy based energy in both the case over all power should remain constant.And frequency should be in the range of VHF not in microwave range.

Hey all, I am looking for any expert who knows bout the ADC. I am planning to convert my audio analog signal to be digital signal, then i m goin to transmit that digital signal by using LASER DIODE. However, I can't really understand the circuit, how to connect that for transmission. As i...

Hi. I would like to do a dc-dc converter which have output voltage equals to 12V and current is between 1.1A and 100mA. But, the input voltage is around 385V which is the voltage output of the PFC part. Since the voltage into the buck converter is so large, I would like to make a forward...

HI, How do i feed the current information into micro-controllers ADC input to calculate the total power? Please help. I am using atmel tiny45 and its a boost converter output current i want to measure for output power. Thanks.

Hi I have a lot of work regarding documents management. I am looking for a word to PDF converter software compatible with Windows XP and Windows Vista as well which can even batch convert files. Please recommend some conversion tool. Any help is appreciated! Thanks!

Homework Statement Hey there.. need helps here.. The question is.. Derive an expression relating the output voltage, Vo to the input current, Iin. The Attempt at a Solution i try to derive it.. but.. got problem with RL[/size] V1 = -IinRf Vo =- R2/R1(-IinRf) how to include Rl in...

Hey Everyone, I am working with the Iowa State University SAE and need to find a DC/DC Converter that fits our application. We are running two electromagnetic clutches instead of a traditional differential. So I need to be able to take the regulated 12V DC at 10A from the stator and boost it...

Can someone give me a circuit diagram i can use to change the frequency of AC current?

Hello, I do not know if it's really upper physics but I have some exercices to do and I find them a bit difficult for a beginning. This is a circuit: http://up.sur-la-toile.com/iu7M I'm asked to simplify it like shown on the drawing so that afterwards I get this circuit...

hello..im final year student..i have some problem that i doesn't know how the first step to design the boost converter circuit which is step up the voltage from 5v reach at 24 volt..anybody can help me..:smile:

can anyone suggest a good site where i can get a .3gp converter for free? I a tried a couple a sites (google search), but those .3gp videos fail to play on my cellphone.