Questions tagged [bridge-rectifier]

an arrangement of four or more diodes in a bridge circuit configuration which provides the same output polarity for either input polarity. It is used for converting an alternating current (AC) input into a direct current (DC) output.

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32 views

How do I calculate the conduction angle in an uncontrolled three-phase full-wave bridge rectifier?

Basically I to calculate the conduction angle of the rectifier, with RLE load, I was taught to use some formulas and a plot but I not really how to calculate it from scratch, if you could explain it ...
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64 views

How do I calculate the average voltage of this wave?

I need to calculate the average voltage of the wave below, the DC voltage is 120 V , the curve starts at 21.65 degrees and the peak voltage is 325.269 V. The solution is 221.3 V. This is from a ...
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46 views

Selecting suitable High Voltage / High Switching NPN transistor replacement for old PSU

I have an old Olivetti PC where the main input fuse in the PSU blows as soon as I flip the power switch (the same instant). Due to the specific form factor of this PSU I am thinking about trying to ...
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Removing the load of an AC signal to a DC signal

simulate this circuit – Schematic created using CircuitLab I built this circuit to visualize music with LED's using a full-bridge rectifier I got from a vacuum(meant for 120VAC to 120VDC, with ...
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2answers
61 views

How many inrush current limiting thermistor do I need and where should I place them?

In most designs they place a single NTC thermistor in series before the bridge rectifier and in some two or four: simulate this circuit – Schematic created using CircuitLab Isn't a single ...
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48 views

Full wave rectifier with inductor filter

The capacitor-only bridge rectifier can't remove the ripple under heavy load and for a linear lab power supply I need to have an output without any ripple under load. after simulating the bridge ...
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51 views

Designing MOSFET bridge rectifiers for high voltages

I've been looking into MOSFET bridge rectifiers, also known as "zero IQ" rectifiers, as a replacement for traditional diode-based bridge rectifiers. Here's a simple example: The benefit, of course, ...
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75 views

Getting several voltages from a single transformer

I have a multi-tap transformer and I need to get two different voltage from the transformer, variable and steady. Is the below diagram correct, will it work this way? simulate this circuit – ...
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46 views

Load RMS voltage of a bridge rectifier

I was given a homework assignment shown below and I have a few quick questions that I appear to be stuck on. Any help would be appreciated. I can get Part i) and the answer is 168.64 degrees. Part ...
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588 views

Bridge rectifier outputting 338 volts DC with 120 volts AC input

I am measuring the live voltages right now and am seeing these numbers. I thought 338 volts DC was the result of rectifying 240 volt AC? I understand that 120 volts AC is the Vrms reading and that ...
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90 views

Why is it that a full bridge rectifier requires input to be derived from a transformer that provides dc isolation from the supply?

Recently I came across this and searched a lot online for an answer but couldn't find one... I found it mentioned in basic electronics book under rectification...It was also mentioned that the ...
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35 views

What would be the output voltage of the full wave rectifier output when center-tap is removed?

This is the circuit I have been analyzing. My intention is to calculate the output voltage at the resistance RL when the center tap is removed. With center tap connection, output voltage VRL(DC) ...
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29 views

Forward Voltage VF Max 1V does this mean that the full wave w10 bridge rectifier can only allow 1 volts via it

I want to use a full-wave bridge rectifier. My circuit needs 2 amps of current and operates at 12volts (12V @ 2A). I found this https://www.tanotis.com/products/vishay-2w01g-e4-51-bridge-rectifier-...
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23 views

Rectifier and EMI filter for multiple led drivers

I try to make a power supply stage for 2 offline led drivers insted of making 2 different boards. Find in atteched file the design A and B. Could you explain and suggest me what is the best design to ...
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70 views

Full Bridge Rectifier - Voltage Drop Under Load

I am trying to get 5v DC by rectifying the output of a microwave transformer i rewound (the transformer gets approx 4.2V AC on the secondary winding). I managed to get approx 5V open circuit ...
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77 views

AC to DC rails sag excessively when loaded

I'm just experimenting with rectifying a 120v to 12v dual winding transformer and smoothing it out two a dual rail power supply while I work towards attempting to build a clean power supply. I ...
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106 views

What happens if we take out two diodes from diode bridge?

In all textbooks diode bridge that transforms AC to DC is drawn as having 4 diodes like this simulate this circuit – Schematic created using CircuitLab I wonder, what would happen if we ...
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75 views

Control of battery charging

I have been developing a control software for charging and discharging battery in a dc grid. The system consists of: 01) Three phase alternator with three phase diode bridge rectifier at its output ...
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3answers
83 views

Can a single phase SMPS be converted to run from three phase?

If you have a switch-mode power supply that runs off 240 VAC single phase, is it possible to convert it so that it runs off 3P+N (415V phase-to-phase) by only changing the bridge rectifier? I have ...
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2answers
104 views

I'm trying to learn how to make these circuits but have no clue if I'm on the right track? [closed]

I've recently been doing some online tasks but I am really struggling to understand how build this circuit in multisim. I am also struggling to calculate the values listed in 2. and have tried to find ...
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1answer
137 views

What can I use to supply 220V DC to this motor?

I have a small 220VDC motor I would like to drive via a speed controller, so I can continuously adjust the speed. I'm in Australia with 240V mains, and I also have an adjustable 0-220V AC controller. ...
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1answer
56 views

Diode bridge rectifier convert 13.5v ac to 17v dc

i just make a voltage rectifier as shown below Four IN4007S diodes one 15k ohm resistance one 25v 2200uF capacitor I have a 220v->13.5v transformer, and transformer output is supposed to convert ...
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1answer
45 views

Deliberating shorting PTC to toggle between FBR and HBR

We're designing a board that needs to interface with a variety of different furnace control boards, some of which have full-bridge rectifiers and some of which have half-bridge rectifiers. Depending ...
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2answers
117 views

Alternative to center tapped transformer [closed]

I would like to replace a center tapped transformer, which is directly connected to a full bridge rectifier, by two DC lab power supplies. Does that make sense at all? The power connector goes ...
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2answers
154 views

230VAC to 230VDC converter for flicker free LED construction lights for use in videography/photography

We use LED construction lights for illuminating a photo or video set. As espected the lights flicker with the mains frequency. While in some cases this can be compensated with the right camerasettings ...
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4answers
992 views

Converting 8V AC to 8V DC - bridge rectifier gets very hot while idling

I am tinkering with an Arduino and recently had to convert 8V AC to 5V DC in order to run it. The project is a custom doorbell, which gets the power from the doorbell transformer (transformer is ...
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1answer
78 views

Rectified current transformer output is asymmetric

I'm using a current transformer (CS4200V-01L) to measure the current in a half-bridge. I'm facing an issue where the signal out of the current transformer is asymmetric, almost as if the current ...
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1answer
26 views

Average Voltage of a 3phase full wave bridge diode rectifier derivation

Why three phase bridge rectified waveform is integrated over the half period \$\pi/6\$\ to find the average voltage? Should it not be integrated over \$\pi/3\$\, as the wave form repeat itself after \$...
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1answer
121 views

What is the purpose of these diodes?

What is the purpose of these didoes? I couldn't find it because I don't know it's name. Thank you. simulate this circuit – Schematic created using CircuitLab
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131 views

Heatsinking considerations for Common Cathode Rectifying Diode

I am using this as rectifying diode in full bridge configuration in one of my power supply designs. My questions are regarding heatsinking of the diodes. They are as follows: Do I need to use ...
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1answer
97 views

Current consumption calculation + Full wave Bridge rectifier

I am facing to calculate the current consumption in a segment of a circuit as shown in the picture below.I have used the formula (showed in the picture) without considering the impedance of the ...
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1answer
67 views

Ltspice Full-wave rectified signal issue

I have done a simple simulation with Ltspice with a bridge diode rectifier as shown with the picture below. However I have observed an issue in the shape of the output voltage and not the current ...
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1answer
78 views

Full-wave rectified signal issue

I have done a simple electronic circuit with a bridge rectifier diode and I have observed an issue when I display the output signal. The output signal on some harmonic doesn't reach the 0 point as ...
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826 views

How to avoid voltage drop when using full bridge rectifier as reverse polarity protection

I found a couple of old bridge rectifiers. After reading some docs and tutorials about reverse polarity protection decided to give them a try. The problem is nobody offered a solution against the ...
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How to choose high frequency inductors for high voltage line filtering?

I saw these inductors 680 uH (RL-1294-680) in each power line like shown below. The line to line voltage is 480 VAC. The inductor used has a saturation current of 280 mA. So I suppose I shouldn't ...
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48 views

SiC rectifier Q value vs capacitance

I am choosing between schottky for a bridge rectifiers. But I can understand how to choose a SiC based on the parameters for a rectifier application. I want the fastest 2A SiC diode (for lowest noise)...
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Will my circuit charge the battery and power Arduino?

I am currently attending High School, so I don't expect too much here. I simply want to know all the recommendations for this circuit (Capacitor values, etc). But I mainly want to know if this ...
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47 views

LTspice DB207 Bridge Rectifier Model

I have breadboarded a 6/12VAC to variable DC power supply that I want to analyze before hard wiring. It uses the DB207 bridge rectifier chip and I cannot find a LTspice model for it. Does anyone have ...
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140 views

220 volt ac to 12 v dc converter without voltage regulator

I want to design Additional RC Filter. My input is 220V AC and I want to observe 12 V DC output. I am designing 100 Hz with a full-wave bridge rectifier. My question how can I find the output of ...
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214 views

Converting a sprinkler system's 24V AC outputs to 3.3V DC logic inputs

I am working on a system that can detect which of the AC outputs on a sprinkler box is on and for how long. The sprinkler box has one common wire and then 18 connections that output 24V to open ...
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1answer
215 views

Can I use DC to run an AC device in some cases? [closed]

I think there may be devices specified to use alternating current (AC) which can run supplied with direct current (DC) instead. There are devices which depend on AC in some fundamental way, like a ...
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1answer
43 views

Rectification voltage

I designed this power supply and simulated in Multisim 13.0, and noticed that the output of the full bridge was higher than that of the input to it. Would this have anything to do with the ...
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3answers
96 views

Choosing capacitance for recifier

So I'm trying to use a couple of rectifiers. Specifically, the "NTE5326" and the "36MB120A." I've tried following videos on how to calculate for a smoothing-capacitor but to no avail. If you use ...
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1answer
87 views

What is the difference between commutation number and pulse number in?

My question is about bridge rectifiers in power electronics. I guess the jargons are too vague, so i quote the exact definitions from my book which i don't understand at all: m represents the ...
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1answer
144 views

AC mains rectifier issue

I built a simple full bridge rectifier with AC Mains input, but I noticed that: When the input is 220 V rms the DC output is only 293 V, but I expected the DC output voltage to be 220 x sqrt(2) = ...
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1answer
81 views

Unmarked Bridge Rectifier

This is out of a 600 watt computer power supply (CoolMax ZX600) and I don't know how to identify it without markings or a schematic and hoping someone can help. The PCB spot for this is labeled BD1 ...
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1answer
34 views

How can I create a moped DC source from the alternator using the chassis as common GND for both AC and DC?

I need to convert from AC to DC the output of the red wire coming from the right stator coil (marked with R) which is the one that feeds the lamps. The idea is to convert to DC then regulate the ...
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1answer
273 views

High current, low voltage capacitors

I'm putting together a high current (200A+), low voltage (<5v) rectifier circuit. I have sufficient bridge rectifiers, but to smooth out the waveform I need a strong enough capacitor bank. Besides ...
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1answer
79 views

Need help determining smoothing capacitor(s) for rectifier

I am making a rectifier for a single N-Scale train building. It takes DC, but the train controller gives out 19VAC. I have 4 1N4001s and some capacitors, but probably not the right size/uf. I only ...
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3answers
385 views

Why Is There Negative Voltage at the Anodes of Two Rectifier Diodes in this Circuit?

i've been trying to figure out how this PSU in my amplifier is working by studying the schematic, and would like to check that my assumptions are correct, but also, as per the title, i'd like to ...