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Questions tagged [rectifier]

These are part of AC to DC conversion. A half-wave rectifier keeps only the positive part of the signal. A full-wave rectifier also keeps the negative part, but flips it to make it positive too.

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What are the differences between Greinacher and Bridge voltage doublers?

I was reading a wiki article on Voltage doublers, and wondered - what are principal diffirences between two following schemes: They all share same amount of components, but when and why should be one ...
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52 views

Diode Array for Full-Wave Rectifier for PoE

I was looking for SCHOTTKY diode for designing Full-Wave Rectifier for PoE. I was searching for the diode but came across the ...
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20 views

How to calculate the output voltage of a full-wave rectifier if the output is connected to a half-wave inverter

I am using PSIM, and I want to connect a single-phase full-wave rectifier to a half-wave inverter, as shown in the image. I know that the output of a rectifier depends on its load type, so what should ...
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36 views

MagJack for PoE Powered Device

I am adding Power over Ethernet functionality in my Toradex's System-on-module (Colibri iMX6ULL) based carrier-board design. I ...
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83 views

IGBT failure and protection

I have a 3-phase bridge rectifier (shown below). I am using an IGBT (STGE200NB60S) to limit the inrush current from the capacitors at start up. I also added the NTC thermisters to help with the inrush ...
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32 views

full bridge dc-dc converter with flyback [on hold]

simulate this circuit – Schematic created using CircuitLab I'm trying to understand a device I have but I don't know the topology because it has a different usage of flyback converter inside it,...
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1answer
58 views

What is Maximum Average Forward Rectified Current? (1N4001 Diode)

I am wondering if someone can explain what Maximum Average Forward Rectified Current means for a diode. I see that this is marked as 1 Amp in the datasheet for the 1N4001. I have not been able to find ...
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51 views

Is it possible to use DC-restoration as a half-wave rectifier?

A simple DC-retoration circuit: seems to do the about the same job as a half-wave rectifier, is it standard to use these two circuit instead of each other ? I tried to increase the capacitance of ...
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52 views

how to reduce the rms value for a bridge rectifier?

hello!! can any one help me with this circuit.i need to reduce the rectified dc voltage.is it possible to reduce the R.M.S value after the bridge rectifier i.e before the capacitor? practical value (...
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1answer
33 views

How to calculate diode value in full wave bridge rectifier [closed]

Hello I Am making A full wave bridge rectifierAnd have board diode’s two of each type all rated each at 300 amp , I wondered what the total current capacity will be of the full-way bridge rectifier as ...
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What is generic formula for min and max levels of rectified AC voltage?

For example, if i have 1 phase AC voltage with 1 volt peak level and rectify it., i would get some pulsating voltage V = abs(sin(t+0*pi)). Its minimum is 0 volts ...
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82 views

How is the extinction angle for a half wave rectifier with RL load calculated?

I have a couple of notes about the half wave rectifiers with the RL load, but I dont quite undestand how is obtained the extinction angle \$\beta\$ ? simulate this circuit – Schematic created ...
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Could the extra power not used through a regulator or buck converter be used in another load without taking away power from the regulator? [closed]

I’m making a design for a crank generator which will charge my phone and a battery at the same time. The generator will be connected to a bridge rectifier, then a buck (step down) converter, which ...
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Bridge Rectifier Fails When AC Inputs are Shorted

I am working on a design that involves powering a 3.3V microcontroller off a doorbell transformer but I am running into an issue with the bridge rectifier failing when the AC inputs to the rectifier ...
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3answers
56 views

Full wave rectifier

In a full wave rectifier (consisting of 2 diodes), ac is converted into DC. Confusing part is I know how the rectification is done, but still how the input ac current (consisting of both negative and ...
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Derivation of the equivalent model of a resonant converter

I'm trying to understand how a resonant converter works, but one thing confuses me, and this thing is the derivation of the equivalent model using first harmonic approximation (FHA) method. At first ...
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1answer
47 views

Building a High Voltage Rectifier with a continuous negative output

simulate this circuit – Schematic created using CircuitLab In the past, I have worked with high voltage projects, but seldom with HV rectifiers. Thus, I was curious how I could build a ...
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ATRU 18pulse winding topology advantages

There are three main winding topology when discussing ATRU's T-delta, Delta and Polygon The question is though... when to use which topology... The general approach I take when dealing with ...
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0answers
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How to compute the least overshoot Voltage used by schottky rectifier?

I have a schottky rectifier, it's 11DQ10. I know the Max. Working Peak Reverse Voltage is 100V Vrrm? If i give it a singal which is a Damping pulse, the first peak maybe over 100V, but the second ...
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3answers
84 views

“Active Low” SCR

Background: I'm working on a circuit that uses an ATmega 328 processor, and a hall effect sensor. We're creating a small wireless sensor, so what we're focusing on now is power consumption. We want ...
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0answers
47 views

Rectified X2 circuit gives 2 voltages depending on how the powerplug is connected to the wall (EU)

simulate this circuit – Schematic created using CircuitLab I'm trying to control a mosfet directly from a phase shifted 50Hz sine wave. But when I was trying to understand the voltage drop with ...
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4answers
93 views

Question regarding ripple factor

For the pictures above, I am confused as how to how they got/derived the formulas for the peak to peak ripple voltage (VrPP) and Vdc. So far, I got the output voltage, which is 14.9 volts. However, I ...
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Transformer identification needed

Would someone please help identify this transformer colour and what is goes to. I managed to pop the fuse few time trying to measure voltage of any sides and wires. Here what i did so far, and wired ...
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3answers
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LM833N OP AMP Configuration Help [closed]

I am using this Chip: LM833N to essentially trying to Half Wave rectify my low AC signal input ~1.36Vp. Using it in this configuration for now to get things started (Ignore the part number). CH1 ...
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1answer
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Calculation of 3-phase power in Electric Vehicle Charging

I have a doubt regarding calculation of 3-phase power in EV charging. On the last page of the pdf in the link given below, the power calculation is done as 3 x 230V x 16A = 22kW. http://www3.fronius....
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1answer
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In a 3 phase rectifier, why is the output always the highest voltage?

Consider following circuit At t=0 I can wrap my mind around the fact that Vout equals whatever value the highest phase has since the others are negative or zero. But after that only one of the three ...
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0answers
47 views

Y/Y/Δ or Δ/Y/Δ transformer for a series connected 12-pulse rectifier?

I'm aware that 30° shift is needed in order to obtain a 12-pulse rectification, however, I'm a bit confused about the configuration of these transformer. In most HVDC systems that appear in Alstom - ...
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0answers
34 views

Help understanding smoothing chokes

Assume the input voltage is a sinewave. How does the voltage/current across the resistor R change with variance of inductivity L? If I we assume L -> inf, what kind of waveform would we get at the ...
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1answer
165 views

Frequency response of a parallel RC filter (smoothing capacitor in rectifier circuit)

I understand qualitatively and electrically how a smoothing capacitor works in the case of a diode-based full-bridge rectifier but what I am not too certain of is how to describe it in terms of its ...
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3answers
61 views

Three diodes in series rectifier

So, I want to make AC 220V to DC 220v rectifier. Can I use two or three diodes in series, because the reverse voltage maximum of one diode is about 60 volts?
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1answer
63 views

Clipped input sine with 1N4148 signal diode

in my electronics lab at university we were studying diodes and I stumbled upon a behaviour that I cannot understand nor explain (I'm I physics undergrad, not and EE). The circuit we were analysing ...
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1answer
35 views

What would be involved in rectifying electricity from a faulty car alternator?

Disclaimer: Newbe As I understand things: a car "alternator" generates a/c current the alternator contains diodes that rectify the current to d/c current if one or more diodes fail then the ...
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37 views

Sizing capacitor filter for 12-pulse rectifier with bridges in series

I've always used circuits where the load is directly in parallel with the capacitor but what happens when using this topology in order to have a 12-pulse rectifier with bridges in series? Should I ...
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58 views

explain 12 pulse rectifier output and filter circuit?

Parameter 3 phase 115/200 volts AC Input 200-amp output Input Frequency is 400 DC output is 28 volts Output ripple is 1.5-volt maximum Question : on transformer secondary side it is star and ...
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137 views

SCT-013-000 Rectifier (on Proteus)

I want to convert the SCT-013-000 Current Transformer output to a Direct Current, so I can read my current sensor with a low sampling rate. I am projecting the circuit with Proteus, but it isn't ...
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0answers
47 views

What's wrong with this modified 12-pulse rectifier topology?

I added two capacitors downstream in order to absorb AC component from rectifier current. Both Subsystem blocks are meant to form "triangular" currents in order to have these currents at both HV ...
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1answer
72 views

unsigned op amp output?

edit: OK, I am making it simpler. Currently, the input varies from -1 to +1V, and the output is (obviously) -1 to +1V. I want the output to vary from 0 to +1V. Not just shifted up with a dc bias and ...
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2answers
106 views

Why does my LM317 give lesser output than with LM337?

How can I maximize the ouputs?
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1answer
94 views

Measuring an AC-voltage at the ouput of a full bridge rectifier

I've a full bridge rectifier and I put the following function into it: $$5\sin(100\pi t)\tag1$$ So, at the output I get: $$\left|(5-2V_d)\sin(100\pi t)\right|\tag2$$ Where \$V_d\$ is the voltage ...
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1answer
48 views

Need help with high voltage rectification

I have a necessity to implement a bridge rectifier, the bridge will be fed from residential power, stepped up with a transformer at 409Vac rms @ 8amps. The power will be used continually and not in a ...
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1answer
48 views

Resistor network in half bridge rectifier

I have come across the following half bridge rectifier circuit connected across phase R and T. I'm wondering about the large resistor network in parallel with the source. What is the point of this ...
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2answers
326 views

How is the voltage supply and peak-to-peak voltage of a rectifier found in this example?

I'm struggling with rectifier calculations, and below is an example my teacher uploaded in my blackboard. How did he find the frequency of the voltage supply and what is the calculation of the peak ...
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2answers
44 views

ac current measured in a 3 phase dc rectifier

Hi have a 3 phase DC rectifier: input 400V AC; output up to 10V/2000A DC I'm aware that it's normal to have some AC current in the output of the rectifier and in this particular case it is acceptable ...
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If a current from a 12-pulse rectifier pass through this circuit, should the capacitor absorb energy?

I'm trying to give a "triangular" form to the incoming current like this: Where the yellow signal is the reference and the cyan one is the actual current. However, in order to track this current I ...
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0answers
37 views

Why output voltage of a 12-pulse rectifier oscillates with a resistive load?

I'm simulating a simple 12-pulse rectifier with just a resistive load at the output and altough I get every pulse, it seems that they are oscillating if I zoom out the signal. This is the system I ...
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2answers
103 views

Is there any relation between the input and output of bridge rectifier that can explain this sentence?

Energy can be extracted independently of the excitation type and frequency, as long as \$V_p\$ exceeds the output buffer voltage \$V_{buf}\$,I am not understand what does this sentence mean,it seems ...
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1answer
53 views

Waveshaper: Amplitude changing as frequency changes

I have designed a Sawtooth to triangular waveshaper using a precision full wave rectifier.I added C1 to stop clipping and the parallel resistors R7 and R5 to get the triangle's ampitude the same as ...
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1answer
33 views

AC ammeter for battery charger

I am having a bit of confusion regarding the use of AC ammeters in a battery charger circuit. The electronics shop guys told that they have been using it successfully in their chargers. Can this be ...
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2answers
83 views

How to solve this differential equation corresponding to the RL circuit?

When VT is under on-state, this function is set up: $$L\frac{di_d}{dt} + Ri_d = \sqrt{2}U_2\sin(\omega t) \quad\quad\quad\quad (1-1)$$ I can't solve this function :( The instantaneous ...
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2answers
110 views

Tesla free energy collector

I'm trying to see how this circuit works: This is taken from http://www.instructables.com/id/TESLA-FREE-ENERGY-COLLECTOR/. I tried the circuit with 1n4148 diode and I can see a voltage on the ...