# 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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### 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, ...
151 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 – ...
82 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 ...
845 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 ...
120 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 ...
108 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) ...
177 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-...
30 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 ...
634 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 ...
98 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 ...
501 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 ...
85 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 ...
362 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 ...
106 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 ...
1k 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. ...
186 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 ...
48 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 ...
324 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 ...
396 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 ...
1k 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 ...
196 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 ...
104 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 \\$...
128 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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### 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 ...
392 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 ...
502 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 ...
91 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 ...
2k 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 ...
43 views

### 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 ...
54 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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### 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 ...
216 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 ...
370 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 ...
1k 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 ...
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 ...
206 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 ...
216 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 ...
195 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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### 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 ...
59 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 ...
697 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 ...
123 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 ...
801 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 ...
1k views

### 24vac to 24vdc with bridge rectifier BUT

I am needing to power a 24vdc gate motor, it is rated for 24vdc 1A on battery power and 24vdc 4.5A on mains power, i have a laptop charger(AC Adapter) that does 220vac to 24vac and 4.5A but i need the ...
331 views

### Paralleling output of multiple BLDC motors used as generators

First of all, I apologize for anything stupid I say as I am not yet well versed in the proper technical terms and schematics. I wish to use several identical BLDC motors that will be spun at the same ...
292 views

### Why Current draw in DC variable power supply is not sizable?

I have done a DC variable power supply, and checked it using multimeter the output voltage ranges from 1.3v to 19v, but the problem is when I added a DC load(small DC motor) it was not working, why? ...
497 views

### High Output Current with Short Circuit Protection KA7824 Regulator [closed]

I have a circuit board with the following set up with the voltage regulator KA7824 This picture is taken from the datasheet of the voltage regulator as one of its uses. my circuit board converts AC ...