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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213 views

Double Bridge-Rectifier Circuit Question

I am up to building a NE555 controlled PWM circuit that will power a 220v heater. NE555 will use a typical configuration and will drive a 20N60 Mosfet. The mosfet Vgs(th) is 10v, so NE555 needs to be ...
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1k views

Can a diode bridge be connected to a high input voltage?

I'm trying to rectify an AC current at 220V. Many written tutorials don't mention any transformer before the diode bridge and many video tutorials use transformers that provide an output of 6V or more....
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1answer
97 views

How to rectify and smooth a high frequency sinewave

I'm working on an experiment that generates a high frequency sinewave using an air core transformer. How can I rectify and smoothen this high frequency sinewave because most of the high current ...
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1answer
56 views

Why is the rectifier (using diode bridge) and delay circuit (using IC 555) close together, and malfunction? [closed]

I designed a rectifier (using diode bridge) and delay circuit (using IC 555). When I tested both circles by connecting but separately connecting the two PCBs The end result is working normally. But ...
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74 views

Can lithium battery be charged with rectified AC?

If AC is rectified to make it to only positive AC, can it charge batteries without damaging them? If no, then how regenerative braking works in electric vehicles? Does every motor controller have big ...
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2answers
127 views

Why does placing multiple bridge rectifiers in parallel reduce the voltage drop?

I noticed when you start running these KBP310 bridge rectifiers in parallel the Vf goes down. From 0.998 V for 1 to 0.900 V for X4 bridge rectifiers together. Why would that be? Also, I was thinking ...
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57 views

Graetz diode bridge with series LC circuit oscillation problem

I am trying to understand a problem I have encountered. I simulated the voltages on a Graetz diode bridge with a step voltage input of 24 volts. The schematic and the voltage signals are given below. ...
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3answers
118 views

X2 polypropylene capacitor for DC smoothing after AC rectification

Can a X2 polypropylene film capacitor be used for dc smoothing at the output of a bridge rectifier? I want to use this capacitor at the input of a power factor correction circuit with a switching ...
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2answers
56 views

Bridge rectifier & minimum diode voltage

The varying input voltage to a bridge rectifier spends a certain amount of time between +0.7V and 0V, as well as between -0.7V and 0V, during which there is not enough voltage across any diode to ...
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1answer
77 views

Matching rectifier with inverter

I'm trying to make a DIY wind turbine generator from a 3ph squirrel-cage induction motor but I'm having trouble matching the generator with the rectifier with the inverter. I'm not sure which ...
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2answers
115 views

How much current can be drawn from 1N4007 based bridge rectifier

I am not an electronics expert. Hence little confused with the current rating of 1N4007 diode. I know it's rated for 1 Amp and 1000 V. But I want to use 4 of them in a bridge rectifier circuit which ...
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1answer
117 views

Flashing LED String/Christmas lights to steady on [closed]

I want to bypass the 8 function EK-04 controller( pictured below) and keep lights stay on. There is a post similar to this but it has the old design. Bypassing a multi function Christmas light string ...
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1answer
64 views

Circuit to convert a pulse signal to square wave

How can I convert a pulse signal into a square wave. I have a pulse signal created using a Function Signal Generator, ZK-PP2K Pulse Frequency Generator 8A Driver Module LCD Pulse Frequency Cycle ...
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2answers
679 views

LTspice diode bridge rectifier output oscillating

I've made a LTspice model of a diode bridge rectifier, but when I simulate my circuit the output voltages are oscillating. Here is my schematic, along with the simulation result of the voltage at node ...
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0answers
63 views

Diode and capacitor circuit after diode rectifier. Why?

I came across this design. Basically, it's a rectified power supply that is used to power a big coil. The coil is connected beetween B1 and gnd. My concern is about the diode D2 in series with C27. ...
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1answer
67 views

What is a full-wave bridge rectifier with capacitor filter and voltage divider? [closed]

What is a full-wave bridge rectifier with capacitor filter and voltage divider? Just a simple definition and an example will do.
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1answer
43 views

Help with Logo identification on bridge rectifier

I am trying to identify this bridge rectifier. It is on a control board for a horizontal saw. It is between the single phase 80 VA step down transformer 26 V output and the logic circuit. There is ...
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2answers
282 views

Why do we use thyristors instead of regular diodes for high voltage direct current?

Usually, power lines over large distances use alternating current (AC). However, in some cases, direct current (DC) is also used, as high voltage direct current (HVDC), where the high voltage is used ...
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1answer
75 views

How to calculate current RMS value for full-wave controlled rectifier in degrees?

I'm trying to find the clear way to calculate the current RMS value for full-wave controlled rectifier. Should I include the pi value if the calculation is in degrees since the trigger angle is in ...
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1answer
42 views

SCR bridge control circuit

I want to design a single phase 400V 1A power supply using mains (230VAC,50Hz). For which I plan to use a step up transformer which will step up to 400V and then an SCR Bridge rectifier to convert it ...
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3answers
124 views

How do bicolor LEDs switch colors?

I recently purchased a decorative light with two different bicolor LEDs connected in alternating series fashion. It has red/green and red/blue LEDs connected in alternating series On the driver side ...
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2answers
106 views

How to get +- 400 volt DC from two sources?

I tried two rectifiers in series. From 230V AC I get on each rectifier 207V DC. If I linked them in series + to - it seems to me that the direct current flows into the AC supply. How can I configure ...
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4answers
2k views

Installing heatsink on a bridge rectifier: which side of the rectifier should it be installed on?

I'm going to install a heatsink on a KBU810 bridge rectifier. As the picture shows, the leads are closer the face with markings on it. I wonder if one of the two faces is the preferred site for ...
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1answer
59 views

Identifying the manufacturer and specifications of W06M bridge rectifier

I've got a PCB containing the below-presented bridge rectifier. I searched for "W06M" however several parts with the same part number, but from different manufacturers, were displayed to me. ...
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2answers
120 views

Determining the RMS current of diode of a 3 phase rectifier bridge with a filter capacitor and a load

I would like to know if it possible to determine the RMS current through a diode of a 3 phase rectifier. Here is the simulation. I was looking if I could neglect the effet of the smoothing capacitor ...
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1answer
128 views

Transformer with 5 secondary taps, is the connections correct?

I have a transformer with five taps on the secondary, one wire (black) is the common to four wires: blue green black green blue 30 15 0 15 30 Is the diagram below correct? simulate this circuit &...
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1answer
184 views

How to calculate the real output voltage of a rectifier circuit (center tapped rectifier)

In my class, we are using Proteus 8 to simulate simple rectifier circuits. We are not familiar with analog electronics yet. Since the class is all about using engineering software, there are not many ...
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62 views

Current flow in full wave bridge rectifier during negative half wave

I was watching a video on full wave bridge rectifiers and was wondering why the current flows in the direction of the green arrow (+ to point C) during the negative half wave, instead of going in the ...
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1answer
110 views

Stop string lights from flickering

I am converting white LED Christmas lights (outdoor rated) into over head outdoor lighting. The box says I can connect up to 45 strings. I will only need about 10. Since they flicker, I made a ...
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1answer
76 views

AC to DC conversion, how to keep the voltage same?

I have an amplifier board. The maximum input voltage is -40V 0 +40V DC. I have a 30V 0 30V 5 amp transformer. When I read the DC voltage after rectification, it shows around -45V 0 +45V. So what is ...
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1answer
50 views

Change DC motor direction with rectified voltage

I'm working with the following circuit: It has a DC motor. The VDC can be changed by controlling the thyristor turn on angle. I would like to add a switch to also change the DC motor direction, but I'...
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Issue with Single Phase to Single Phase Cyclo converter Circuit

I am new at this forum. I am trying to make a circuit for single phase to single-phase cyclo converter. Using Pic Micro Controller for Triggering Gate of Trails. Triac -> BT151 Optocoupler -> ...
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3answers
192 views

Is it normal to have 0 volts between the AC inputs of diode bridge rectifier?

I have some basic knowledge about electronics. I am trying to repair an ATX 250W power supply. In the picture below, I measured 0V with my DMM between points C and D (AC inputs of diode bridge ...
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2answers
135 views

Full bridge rectifier for a 5 ns pulse

I want to build a system to measure the time of flight for a long transmission line. The length of the transmission line is between 500 m and 3 km. The attenuation of the transmission line is 0.00981 ...
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1answer
91 views

Bridge rectifier and phantom voltage

I have a constant current LED driver which keeps the LEDs at about 5% glow when the AC side when the driver has its phase terminal connected to live power and its neutral terminal not connected to ...
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3answers
231 views

Weird rectifier attenuation or bad probing?

I am looking at a full bridge rectifier from mains voltage, using MD5S-W. First, I build my circuit for use at 20V AC for safety reasons. I used this adapter: And this is my circuit: simulate this ...
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1answer
69 views

PSIM: thyristor acting as a diode in a full bridge rectifier with C filter

We were asked to simulate a controlled bridge rectifier with C filter for class. Whatever I change the firing angle into, the output stays the same (Same Vdc). I thought that a capacitor filter couldn'...
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2answers
249 views

PSRR of buck converter (or boost)

I want to design a power supply based on a line frequency transformer (50 Hz in my case), and provide a stabilized voltage (15 V) after the rectifier (a classic bridge rectifier with tank capacitor). ...
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1answer
33 views

Commutation and Triggering Angle

I have circuit to analyze like that L = 5mH Vs = 230V (RMS) Iload = 10A Constant Vda = 100V I should calculate commutation(u) and triggering angle but not known both. I tried to find both by ...
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1answer
48 views

AC to DC signal to drive a MOSFET

I need to intercept a 220V AC line to drive a 3.3v MOSFET that activates (for example) an LED. Looking around, a solution could be to use an AC/DC converter but they are meant for powering (so mostly ...
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1answer
151 views

Rectified 230VAC to 24VDC

I am building a simple motor control application, driving a series wound motor that runs on rectified 230VAC. Originally, it was controlled by a pendant switch connected to a 7 pin connector. The idea ...
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1answer
51 views

Using a dual winding transformer to provide dual winding AC and DC of a single winding

Ok, this feels like a stupid question, but my google-fu is not with me today. I have an application in which I have a need for both 12V DC (or thereabout) and 24V AC. I have a transformer that has two ...
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1answer
212 views

Bridge rectifier low voltage

Power supply for headphone tube amp gives me 10-12V lower voltage comparing to the schematic (my measurements are in red for amp under load). Current under load is about 70 mA. Using simple formula : ...
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0answers
91 views

Bridger rectifier producing non-equal voltages

I am making a bi-polar 12V power supply with a centre tapped (12-0-12) AC transformer. On inspecting the voltages after the bridge rectifier (KBU-4B), the negative side produces -26V and the positive ...
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56 views

Bridge rectifier overheating

I bought a cheap LED strip with a power supply unit from Aliexpress. After using it for some time I noticed that PSU is overheating in one spot to the point where the label looks burned. I opened it ...
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1answer
89 views

Full bridge rectifier - in depth explanation

Most explanations of full wave bridge rectifiers start off with a diagram like the one below, and then go on about what will happen on the positive and negative cycle of the AC input voltage. This is ...
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2k views

Bridge rectifier: What is the purpose of these two elements?

I found the following circuit in a random video (don't know what it's worth) and have two questions about it. I get that it's a full wave rectifier, and I think I have a decent idea on how it works. ...
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49 views

Will Paralleling Bridge rectifiers reduce heat in each rectifier?

So I'm converting an old AC stick welder that only outputs 30 amps into a DC stick welder. I purchased 1000 volt 50 amp Bridge rectifier to do the job but I got two because I thought I might screw one ...
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2answers
122 views

How to smooth fluctuating DC from transformer?

For an audio amplifier, I designed an AC to DC (220v to 12V 2A) power circuit like this: simulate this circuit – Schematic created using CircuitLab When I powered my amplifier with the circuit ...
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4answers
180 views

Are there bridge rectifier chips that work at 40 kHz?

As part of a circuit handling signals from a sound receiver, I'm apparently in need of a bridge rectifier that works at a frequency of 40 kHz. I came across this thread talking about how most are only ...

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