Rectifier Definition and 162 Threads

Homework Statement I am in the midst of preparing for my midterm which is tomorrow, and I was going over a past midterm that has the solutions. However, there is one conceptual problem that I am not understanding, in fact, I think it is wrong... The diodes in a bridge rectifier have a...

Homework Statement A highly inductive load is subjected to 10A and 150V via a center-tap recitifier powered by a monophased 240V supply. See schematic below: Homework Equations I'm trying to calculate the apparent power at the primary and secondary windings. For the secondary: S=Vse*Ise...

Homework Statement Hello all, Looking for some help regarding half wave bridge rectifiers. I'm having trouble grasping how to determine the average output voltage for the sin function. Let Vd=voltage drop across the diode. Let θ=angle conduction begins. Let Vs=denote the ac supplied...

Okay so I have to work with SVRs in a schematic I'm looking at and I've never seen them before http://img269.imageshack.us/img269/6985/19892699.png Uploaded with ImageShack.us I know how BJTs work but I don't understand how the current is flowing so far I see that a Vin at base...

I am bit confused about precision rectifier/superdiode circuit using opamp. The first ckt in the wikipedia link - http://en.wikipedia.org/wiki/Precision_rectifier When the input is positive, say 1v, the opamp tries to make the -ve terminal equal to its +ve terminal. So to do that, the...

Where does all the ripple energy go using a full wave rectifier? Say I have some typical resistive load and a parallel smoothing capacitor feed by a full wave bridge from a nice 15 amp AC line. I have 169 peak voltage and a ripple voltage of 30 volts across an electrolitic 100 uF capacitor...

Half wave rectifier based on the principle of PN junction diode convert either possitive or negative portion of AC current But i am confused here that when the portion of current on which the diode is reverse biased current is almost zero then where the energy of that portion goes?

Show how two P-N junction diodes can be used in conjunction with a transformer that has two secondary windings, to form a full-wave rectifier. (Draw a circuit diagram including connections to the mains transformer). Explain the operation of your circuit using sketches of waveforms. (3 marks)...

I need help in understanding a rectifier to charge a lead acid battery on my bike. I checked it with an ohm meter to see where the current flowed, like this: --- I put the positive on Pin 1 and the negatives on Pin 2, 3, and 4 and they connected. So, the current goes from Pin 1 to Pin 2, 3 and...

Hello, I want to come clean with rectifiers. Mainly half wave rectifiers with filter. [PLAIN]http://www.sciencelobby.com/diodes/images/reservoir-capacitor.gif Assume these conditions. Diode CVD is 1 V. At t=0 s, or initially, capacitor does not have starting charge. So everywhere else...

hey,dude,i m confusing about the precision rectifier...why the Vout =E,my question is why the Vout=E - V(diode) ?why the Vdiode does not take into account when finding Vout?here the attachement of the precision circuit diagram..

i have an assignment on PF vs frequency in 3phase diode rectifier the DR want me to draw a graph and stuff but I am not sure how 2 do it or if it does affect the PF. thank you

I need to upgrade voltage panel meters displaying DC voltage from the output of a high volt rectifier. The present meters are obsolete and use an input coming straight from the power supply. I think I need to install some kind of signal conditioner to display voltage from 0 to 800 DCV output...

Homework Statement I attached the problem and my attempts at a solution. Homework Equations The Attempt at a Solution Can anyone check my parts a-c? I also need help figuring out parts d and e. Thank you very much for any help.

Note: This is not a homework or coursework, simply revision for an exam. Thanks Homework Statement [PLAIN]http://img194.imageshack.us/img194/223/question2z.jpg Homework Equations Peak voltage = RMS voltage x root2 r = T/(2RlC) T = 1/f The Attempt at a Solution part d)...

while finding Vrms or Vavg we use integration and we use d(wt) and integrate between the limits 0 to 2pie. When 'w' is a constant how can we take it as d(wt).and if we take as d(wt) only then why are the limits not changed to 0 to 2(w)(pie)?

1. Quick question about Full-Wave BRs. If you have a FWBR with unmarked pins, how do you figure out the AC pins and the output DC pins?

In the picture 1, the capacitor is grounded In the picture 2, the capacitor is not grounded. what are the purpose of this different models. Advance thanks

A friend of mine builds tube audio amplifiers for a hobby. Being an electrical engineer, who works exclusively with micro-electronics, I thought I might mess around in spice a bit to better understand some of the standard circuit topologies they use. My friend is not an engineer so he doesn't...

I have a company that makes electrical resistance heaters. We have an application where we are trying to achieve 60 or less watts in a 5' 120VAC heater. The problem we have is that the heating element wires need to be on the order of 24ohms/ft and that ends up being a small gauge wire (ie 40 ga...

Homework Statement This circuit has kind of been confusing me. In my notes it says V across capacitor = V - 2V, due to the voltage drop across the 2 diodes per half cycle (assuming that the diodes used have a 1V drop each). But (refering to the attachment with the red line), for the half...

Homework Statement A capacitor of capacitance C is connected in parallel with a resistor of R ohms impedance. Calculate the size of the peak to peak voltage of the ripple produced relative to the peak output voltage Vp. Homework Equations Q=CV dQ/dt = I V=IR Vc=Vpe-t/RC (am i allowed to use...

If an LED is connected to a single rectifier, resulting in a half wave, will this cause the LED to pulsate?! I no a bridge-rectifier will work and is more efficient to keep the LED constantly on but can a single rectifier work? thanks

Homework Statement A full-wave rectifier is operating at a frequency of 60Hz, and the rms value of the transformer output voltage is 15 V. (a) What is the value of the dc output voltage if the diode voltage drop is 1 V? (b) What is the minimum value of C required to maintain the ripple...

First post here. Found this place while looking for a solution to my problem. My background is Navy trained electronic tech. (FC to be precise) So an engineer I'm not, but I do fix the stuff. Anyway, at work, I have a 3 phase full wave rectifier with a capacitor ripple filter. Here's a...

Homework Statement Given a Half wave rectifier circuit with the diode reversed . Vs is a sinusoid with 12 V peak , R = 1.5 ohms Vd = 0.7 V find the average Value of Vo , and the PIV of the Diode . Homework Equations average Value of Vo = (1/pi)Vs - (Vd/2) The Attempt at a Solution...

Homework Statement Sketch the output waveform: http://img7.imageshack.us/img7/3774/recgraph.jpg (The coloured lines I added myself)Homework Equations Nothing which applies, I think. The Attempt at a Solution The answer has already been provided. I just have a concept question. The full...

Homework Statement Design a full-wave rectifier that converts 110 [V], 100[Hz] ac electricity from a regular wall socket to a low DC voltage. a) (Fill in the blanks) To lower the voltage from 110 [V] to 11[V], we use a _________, with a turn ration of ___:___. The units of the horizontal...

Was wondering what would happen to the output voltage when the input voltage exceeds the PIV/PRV.

Homework Statement How to prove that Vrms = 0.5 Vmax for half wave rectifier Homework Equations The Attempt at a Solution I know the graph of half wave rectifier is just the upper part or lower part of sinusoidal wave. But I don't have clue to prove it.. Thanks

Homework Statement A 50V peak AC signal at 50Hz is fed to a 1:1 turns ratio transformer full-wave rectifier circuit. The full-wave rectifier waveform is smoothed by the use of a capacitor C=47uF, R=4.3kohms. I need to calculate the peak diode current (however before this i was asked to...

Could some one explain how a bridge rectifier works with a diagram and its mathematics? Also please explain how a center tap transformer and a bridge rectifier are used to provide a symmetric power supply. I have the Ckt Diagram for that but I cannot understand its working. thanks...

Hello, I have created a theoretical coil of 170 turns*.4871 Tesla's*.0045m^2/.06 seconds=6.21V (Faraday of course.) ohm's of the coil=.405 6.21V/.405ohms=15.33A The equation I used -N * curl*B*A/curl*t N=number of turns; B=Tesla's; A=area of the coil; t=Time; curls cancel out. (To...

Will a bridge rectifier circuit without a filter or load resistor connected across its output deliver a pulsating unidirectional voltage ? An oscilloscope trace (dc input enabled) did show a trace of a full wave output though the half sine did not swing down to zero voltage completely and...

http://img104.imageshack.us/img104/3557/1234uyq.jpg Ok, there are a few calculations on this problem that I am having difficulty with. This is a past homework assignment which is why the answers are filled in. They are all correct. Anyways I approached the problem in this manner: V...

I have a predicament. I'm trying figure out the P-P ripple voltage of a Half-Wave rectifier filter, but the only equation I have is: I / (f * C) yet to find the current I need the DC voltage which I don't have yet. The same goes for the DC voltage. I have the equation: VDC = VOUT P – (VR...

http://img26.imageshack.us/img26/3844/fullwave.jpg Just as the title states I am having trouble calculating the minimum Io rating in a Center Tapped Full-Wave Rectifier. I thought it was I AVE x 1.2 but that has not seemed to give me the right answer. I would appreciate any help. (The scan...

http://img12.imageshack.us/img12/7084/helpphg.jpg In the image shown above, how is the average diode current calculated? This is an old homework assignment and I'm taking notes. I would appreciate any help. Thank you.

Dear honored forum members. Thanks in advance for any information and help. The title of this post might not be technically correct, but it incompases the issues that I am working with. My goal is to charge a 48 volt batterypack from a 12 dc volt source. I need a rather high amperage...

Hi My project involves rectification of a voltage produced by a piezoelectric stack subjected to an impact. The voltage shall be rectified using a full wave bridge rectifier. I aim to use a capacitor (in position of the smoothing capacitor) to store the energy harvested from the impact...

Homework Statement I am to build a linear power supply in four stages. However, at stage two, i have to add a bridge rectifier to the ouput of my transformer. My lecturer at university says i should get a graph that is a sine wave, with the negative values reflected into the positive x-axis...

You bought a charger that does not have a charging satus indicator. Assuming that a regular rectifier circuit configuration (such as this: http://www.physics.udel.edu/~nowak/phys645/AC_circuits_files/image016.jpg ) is used for the charger, modify the rectifier circuit to have LED indicator(s)...

I'm wiring my aquariumlet up for light. It's one of those standard 3x20W puck light sets, but I only need one light. I want to wire up a cooling fan using one of the other light terminals. The light set has a transformer that outputs 12V 0.5A, and each puck is 20W max. My CPU cooling fan...

Heya. I might be completely overlooking something here, but is a zener diode pretty much a normal rectifier diode used backwards? For a rectifier diode to conduct, the voltage across it must be greater than some forward voltage value, but the idea behind the zener diode seems to be exactly the...

Sometimes in Full Wave Bridge Rectifier circuits a small value capacitor is placed in parallel to the RC block at the output, such as the circuit diagram in the attached jpg. C1 has a much greater value than C2, and the result value of the parallel capacitors is almost the same. Can anybody...

Homework Statement The Vdc of Full Wave Rectifier (with diode) with midpoint configuration has been found to be 2Vm/(pi) and Vrms = Vm/sqrt(2) How about the Vdc and Vrms value for the full wave rectifier but with bridge configuration. The difference is the the peak inverse voltage...

I'm a bit stuck with rectifier circuits. can anyone tell me what the function of a capacitor is in a rectifier circuit please. Thanks, Dave

Hi I'm new here. I'm trying to obtain the max power possible from a standard 120VAC 15A outlet, but the wave must be rectified so it is always positive. I always see a bridge rectifier circuit paired with a transformer, but if I'm going for max power, and not trying to achive a specific...

in my textbook, they've said that a capacitor is used to filter an input from a full wave rectifier.. So that the output does not fluctuate (much) and hence convert an a/c current to d/c current. But, the textbook isn't clear about how this happens. It just says that the time constant for the...

I wanted to make a negativer full bridge rectifier circuit and filter it, so that after it went past the bridge, the output voltage would be full wave but negative. Tried reversing the diodes on the actual full bridge rectifier but doesn't work. Refer to the diagram on the left,is it...