Rectifier Definition and 165 Threads

Hi! I'm interested in mathematical analysis of Full-Wave Bridge rectifier with smoothing capacitor. I tried to find it on web but without success. I read how smoothing capacitor affect output voltage, but I never saw some mathematical description. Can one mathematically prove it? How can one...

Homework Statement The output of the transformer is a sinusoidal AC signal with ##10.6V## RMS amplitude, and acts as an input to the bridge rectifier. Explain the operation of the following bridge rectifier circuit. Then sketch the output waveform ##V_L## assuming the ##0.7V## drop model for...

Homework Statement For the following bridge rectifier you are asked to find the dc output voltage for the following errors: a)the capacitor is an open circuit b)one of the diodes is open c)the electrolytic capacitor is connected with reverse polarity The Attempt at a Solution My attempt is...

For a full wave thyristor controlled rectifier, if the firing occurs at 90°, the average output voltage is zero. Therefore the average output current will be zero also I assume? If considering idealised current waveforms, should all the currents also be zero (thryristors etc.) be zero or...

i am having trouble finding out all the names given to the components in this circuit. Also i am struggling to find the names to the two different parts of the circuit. can anyone help me please?

Homework Statement For a bridge rectifier (4 thyristor) feeding an RL load having infinite inductance (to assume constant current) and a 100 ohm resistance, calculate for firing angles of 90°, 120° & 150° the average DC voltage and current. The bridge supply is 200V RMS. Draw Waveforms of...

Hi, For a single phase full wave fully controlled bridge rectifier carrying a RL load, how is the RMS voltage and current calculated? I have researched textbooks but can only seem to find RMS equations for Resistive loads and I am not sure whether the negative load voltage will affect the...

Hi, I am trying to model a full wave single phase thyristor controlled rectifier feeding a resistor and capacitor in parallel (like a power supply I believe where the capacitor is used for smoothing?) and I would like to calculate the average output dc voltage in a similar fashion as for a...

Homework Statement a) http://i.imgur.com/LrWxrEX.jpg b) http://i.imgur.com/3YmN3Rv.jpg Homework Equations A halt-wave rectifier(a) is used to charge a battery E.The battery is rated at 12V 100Wh. Average charging current for the battery should be 5A.The primary input voltage is 120v at 60Hz...

Hello, I am reading a book on Power Electronic and got confused on the actual interpretation of ac and dc power. From basic circuit analysis, I already know that the average power delivered to a resistive load by a sinusoidal signal is : P_{ac} = \frac{V^{2}_{rms}}{R}. When talking about a pure...

I am stuck up at finding the ripple factor for a half wave rectifier. According to the formula- V(rms)/Vdc. But how to find Vrms? To find it I would require the equation of the half wave rectified sine wave, right? How do I form that?

Hi, I'm trying to figure out why the output voltage waveform of this circuit would not include a DC offset of E. My understanding is that D1 becomes forward biased when Vs > E, and so that is when it should conduct. Every waveform drawing I've seen, on the other hand, begins conduction at 0...

Homework Statement A single phase half wave rectifier produces a DC signal ##V_{DC} = (4.6 \pm 0.78) V## and AC signal ##V_{AC} = (0.22 \pm 0.036) V##. What is the error on the efficiency? Homework Equations Functional dependence, propagation of error: ##\sigma_f = \sqrt{...

I'm having trouble understanding the following sentence, regarding an improved precision rectifier circuit: This circuit has the benefit that the op-amp never goes into saturation, but its output must change by two diode voltage drops (about 1.2 V) each time the input signal crosses zero...

Hello, I need your help. I am not sure what formula to use for this question. Do you think this is the right one? What's the influence of L/R on this circuit?

Homework Statement I am confused about how they got the expression: VPcos(ωΔt)=VP-Vr Specifically you can find the notes in page 5 of this article: http://whites.sdsmt.edu/classes/ee320/notes/320Lecture8.pdf You may also find it useful to refer to the graphs as a reference...

I am new to engineering so i might not understand the concept well , but i want an ac source to provide current only in one way , so i can connect them in parallel. I have 2 AC sources one with a 100 V output and one with a 120 V output , i need to connect them in parallel so i can get a 220 V...

Hi everyone, anybody knows what's the general voltage level that we use for the rectifier in telecom power supply. According to the user's requirement, it says: a) AC to DC Converters: Minimum 8000W @ -48V b) DC to DC down Converters: Minimum 2000W @ +24V (Optional) 1) The system must...

Homework Statement Determine the Fourier series for the full-wave rectifier defined as f(t) = sinωt for 0 < ωt < pi -sinωt for -pi < ωt < 0Homework Equations The Attempt at a Solution This looks like an even function, so bm = 0 Ao = 1/pi∫sinωt from 0 to pi = 1/pi(-cos(ωt))/ω) from 0 to...

Homework Statement Make a Full Wave Rectifier Circuit(With Capacitor Filer), Clipper Circuit, Voltage Doubler, and Zener Regulator circuit. Can someone help me with this?

bridge rectifier design... Can I use the same bridge rectifier for AC as well for DC voltages? My AC mains is regular 265Vac and DC is 40Vdc. How should I choose bridge rectifier? (In other words, what are the parameters I need to check while selecting diodes for bridge rectifier?) Thank...

What must I do to maximize the voltage received from an antenna? Also, what kind of rectifier diode has the lowest voltage cut?

Hi Folks, I have designed a rectifier and a regulator as independent entities. Both of these blocks are working fine when simulated in virtuoso independently. But when I integrate them, i.e when I connect regulator to rectifier, I am unable to see regulated output. I have attached the...

Hi, I am designing a RFID rectifier. I am referring a IEEE paper for this purpose. The paper has shown results for both 130nm and 350nm technologies. I have chosen 180nm technology. So, I expected results in between the above technologies. To my surprise, the results are weird -...

In the full wave centre tap rectifier, piv of diode require is twice of the input current of the transformer. I can't understand why is it twice when the source is only 1V-peak.

Homework Statement Simple question: is the effective voltage of an idealised full-wave rectification not simply the rms voltage, as it is with the original AC waveform? Backgound... In an electrical apprentice program I am being instructed to use average DC voltage to calculate power in a...

Hello! So I'm stuck in yet another problem, I've been going through some Fourier Series problems (including one that I already asked about around here, and go great help!) and I've managed to get past most, but I got once again stuck on one. So for this one we got an alternating current of the...

hi there, I'm currently facing a problem with the silicon rectifier, http://www.alldatasheet.com/datasheet-pdf/pdf/35499/RECTRON/6A8.html with the current setup which is at the attachment. The source is a AC current of 230V 50Hz , while the cap is at 0.3μF. The setup is to provide...

what i mean is, if i want to make a certain rectifier circuit to some sort of load, how would i know which diodes and transistors/IGBT's/MOSFET's to use? for example, i have an AC source with 50 hertz and a load that requires 60 hertz, what would i use? can you show me calculations?

Can anyone please clarify if the current in the primary coil of the transformer follows V(s)I(s)=V(p)I(p) when i am trying to figure out the peak, surge and average current through the primary coil of a transformer in a full wave rectifier. Also, if it does, do I just use the peak voltage or...

Homework Statement My professor gave us a formula for the left-over output AC voltage in a half-wave rectifier. This formula was given without any calculus or explanation as to how it was obtained. Homework Equations V_{out(AC)}\simeq (0.385)(V_m-V_{th}) The Attempt at a Solution...

Homework Statement Derive the ripple voltage of a full-wave rectifier with a capacitor-input filter. Homework Equations Where V_{r(pp)} is the peak-to-peak ripple voltage and V_{DC} is the dc (average) value of the filter's output voltage. And V_{p(rect)} is the unfiltered peak rectified...

Hello I have recently been covering firing angles in rectifiers at uni. I didn't really understand it in the lecture, and the tutorial questions/one to one with the lecturer didn't help either. It would also seem that the internet isn't of much help either from a quick Google search and as...

Homework Statement See figure attached. Homework Equations The Attempt at a Solution See figure attached for attempt at the solution. Can anyone verify whether or not my workings are correct?

Homework Statement Using the approximate triangular output shown and Vdc previously calculated, use the expression Vout=Vdc + Vac to solve for Vac. Find an expression for Vac that is valid from t=0 to t=T. Your expression should be in terms of Vp,R,C,T and t. The circuit is a half wave...

Hi everyone. I'm back again with another silly question. Please bear with me. Below is a figure of a basic center-tapped full-wave rectifier circuit and my question is; why can't we use anything other than diodes to get a unidirectional output current? For example, what difference would it...

Homework Statement Full Wave Bridge Rectifier circuit Basically this circuit, but ZL is r//c not simply r as it is in this circuit (also, disregard any values... just the model is relevant) Vs=6.5cost(2pi60t) CL=1μF RL=500Ω I'm trying to find Vmax and Vripple. Homework...

I want to get a larger flow rate out of a common 3 speed induction motor desk fan. Without forking out for an off the shelf VFD, I thought perhaps I could build a frequency doubler using a bridge rectifier. Following the circuit from left to right, I'm thinking that I'll feed the 240V...

hi guys... OK... I have been caught out with a question I can't answer whilst discussing rectifiers and smoothing what is the correct term for describing the value of the voltage out of a fullwave rectifier with no smoothing capacitor present ? example... so 10VACrms out of the...

Well rms current in AC is I / √2 and average current in DC is I /π ( in half wave) ripple factor is rms current in AC divided by average current in DC which according to me is 2.2. But value given is 1.21 everywhere Is my formula wrong. Have i misunderstood ripple factor?

Hi, Everyone. I'm doing an AC to DC converter circuit using rectifier, filter capacitor and zener shunt regulator, to provide an output DC voltage of 4.3V. I designed the circuit in several steps, which I have attached in a PDF file. Here's the final circuit: When I do a Multisim...

Hi all So my question is, ... suppose we apply sine wave at the 2 ends, th the cycle 0 \rightarrow \pi will all the coils of secondary coil of transformer be used or just upper half of it (assuming currently upper side is getting positive polarity) ... I think only half should be used ...

I have some confusions regarding rectifier circuits. I was wondering does any change happen to the rectified dc voltage if i change the load resistance. I was thinking even if the current change with the change in resistance, there should not be any change in the voltage. But, it seems it is...

I need your help in understanding the concept. Actually, I am trying to understand the grounding concept here: Attached is the snapshot: Hi Folks, I need your help in understanding the concept of how to measure the output voltage. 1. Initially, I tried to monitor the voltage...

Hi, Everybody! I was tasked by my lab instructor to design an AC to DC converter using a 4 diodes model. I started doing the simulation in Proteus ISIS7 part by part to get the needed values for components to get a final DC output of 4.3V. Currently, I'm doing a simulation of the first...

Hi, I have started with cross-coupled gate structure of MOSFETs. This structure is for rectification of very low ac input voltages. I have found few problems like reverse leakage current and MOS not switching completely ON and OFF. So, I modified the design by using driver circuits for...

HI, I am very confused how to connect my bulk of MOSes in my circuitary. NMOS bulk should be connected to lower potential and PMOS bulk should be connected to higher potential of the system. Moreover, Source and Drain are interchangeable and so whichever is at higher potential acts as drain...

Is it true that a full wave rectifier is more efficient than a half wave and if so why?

in three phase rectification at say 50 hz the dc output ripple will be in 6 times the supply frequency, when choosing an inductor to smooth this ripple to <20% of the output frequency,what formula should be used. also if say the supply frequency was 100 hz is it correct to persume that the...

Homework Statement A classical rectifier is to be designed to provide 5V +/- 1% for a logic circuit, with output power of up to 12W. The input is conventional 220V, 50Hz source. i) Choose a transformer ratio ii) Choose a diode configuration iii) Calculate the capacitor value to meet the...