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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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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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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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…
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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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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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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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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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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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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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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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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…
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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…
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