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.
Questions tagged [bridge-rectifier]
406 questions
26
votes
5 answers
Can two BJT transistors work as a full bridge rectifier?
It is known that a BJT transistor looks like two diodes back to back (or head to head). With this in mind, theoretically we should be able to build a full bridge rectifier with 2 BJT transistors, one PNP and the other NPN, with the emitters…

virolino
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12
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Why is this rectifier bridge using double diodes?
While reading some old (paper) books, I found this as an example but without further explanation:
Why does it use double diodes? I don't see anything about this elsewhere. Does this increase the handling current? Wouldn't it also drop more…

Aram Alvarez
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11
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LTspice diode bridge rectifier input oscillating
I've made a LTspice model of a diode bridge rectifier, but when I simulate my circuit, the input voltage is oscillating.
Here is my schematic, along with the simulation result of the voltage at node 3 (marked with an arrow.)
When I zoom in on these…

Ana Ćupurdija
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Bridge rectifier: 4 diodes vs. single chip?
I notice (among the DIY audio enthusiasts at least) that when it comes time to design a power supply for an amplifier, DAC or whatever that the parts list will inevitably include something like "4 x MUR860 diodes" for the sake of building a full…

abza
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9
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4 answers
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 installing heatsink, maybe because the semiconductor…

apadana
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9
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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. However:
What is the 220k resistor for?
Why put…

aherve
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9
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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 the Vpeak reaches up to 170 volts. I just don't…

56he65h
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4 answers
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 circuit will take 120V AC and charge a battery in…

Nathan Johnson
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8
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1 answer
Why does a full-wave bridge rectifier have noisy output with no load?
Purely academic question: I have a little bridge rectifier made out of four 1N4001 diodes, being fed by a transformer putting out 12VAC. When I run it without anything else attached to it, the waveform looks like this:
If I stick a 10K resistor on…

danavee
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Can somebody explain why normal diode(1N4001 or 1N4007) is used in rectifier bridge insteed of schottky diode
I have 9v AC(1A, 50Hz) as input to 5v DC(500mA) as output rectifier circuit to power up the development board. But I had a doubt if I use Schottky diode instead of normal diode what happens to the circuit. By watching many videos I understand that…

KARTHICK
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What is the name and purpose of the following component?
I'm trying to repair a small electronic door bell.
I was wondering what is the name and purpose of the white box component ?
It seems to be just a wire with some white body around.
Is it a resistor or a fuse? My guess is that 4W22R means 4 watts …

tigrou
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8
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3 answers
diodes blow with no load on full wave bridge rectifier
I have built what I thought is a simple first stage for a power supply consisting of only the full wave bridge rectifier (made up of individual 3A SMD diodes) and bulk capacitance.
The moment I apply power through the transformer my diodes blow.…

Gineer
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7
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1 answer
What is the function of these extra capacitors around the bridge rectifier?
I'm looking at different bridge rectifier circuits and found this one. Capacitors C5-C8 are smoothing capacitors. Both positive DC and negative DC have capacitors C1-C4 linking to both AC lines.
What is the function of C1-C4?
simulate this circuit…

Ashton Snelgrove
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4 answers
Schottky barrier diode as a bridge rectifier?
I am building a linear power supply. I need a bridge rectifier and the diodes I currently have can only handle up to a maximum of 1 amp, but I need 4-5 amps.
But I have a bunch of YG862C15R Schottky barrier diodes.
Can I somehow use them as a bridge…

Xane
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What are these four diodes doing?
I am working with a MC33186DH1 5A H-bridge IC.
It seems to simplify things quite a lot. The data sheet shows this simple schematic:
I found a break out board that mostly follows that design:
My concern is that this simple approach following the…

AndrewT
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