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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534 views

What could have caused bridge rectifiers to fail?

Ok, so I have a pioneer surround sound that I was trying to fix because of one speaker had very low volume. What I changed was a resistor, its the exact same color stripes, but the size is a bit ...
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272 views

What's wrong with my input circuit? LTspice

I am designing my first power electronics board in LTspice to convert single phase AC to DC. This DC is fed to asymmetric bridge to drive an SR motor which is connected to a flywheel. This flywheel ...
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293 views

Bridge rectifier protective resistor selection

I have a device with a supply voltage range requirement 12-24AC. The B80S bridge rectifier I am using recommends a 3.5 Ohm series resistor to limit inrush to acceptable levels. Initially I decided to ...
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1answer
314 views

Bipolar energy harvesting circuit

I'm planning an energy harvesting circuit using LTC3105 (400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up). The problem is that my energy source is bipolar, although ...
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2answers
104 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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32 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 ...
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1answer
109 views

What does PA1 do in this schematic?

Original document:http://www.st.com/content/ccc/resource/technical/document/data_brief/group0/95/79/2a/ed/d0/a0/4f/46/DM00263698/files/DM00263698.pdf/jcr:content/translations/en.DM00263698.pdf The ...
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74 views

Does using electronics with poor power factor affect the pulse power capability of a generator rated for a certain KVA?

The situation is such: There is a multi-pole, three-phase, permanent magnet generator (rated for 100 KVA, let's say) that feeds into a simple diode rectifier with a capacitive/DC Voltage load (...
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2answers
3k views

Full-wave rectifier with pi-filter

For a project I'm working on, I've to calculate a function for the output voltage of this filter: The things I calculate: The input voltage: $$\text{U}_{\text{in}}\left(t\right)=\hat{\text{u}}\sin\...
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583 views

12VAC to 12VDC Converter Requirements for RGB LED Controller

I have an outdoor lighting transformer (operating at the usual 12VAC) that I want to add a strip of LED lights in a new run. The transformer has two legs, each ...
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72 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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1answer
44 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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46 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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33 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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82 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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32 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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58 views

Difference of single phase rectifiers

I am trying to understand the difference between the following rectifiers: What would be the difference between these two output voltages? I can see that there would be no negative output voltage in ...
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1answer
62 views

Converting DC Motor's Tachometer Output to DC Using Bridge Rectifier

I have a DC motor that its specification states that "Electric DC motor manufactured by Buehler. Sinusoidal Encoder Output: 11.5 VAC - 870 Hz @ 12 VDC input. No load speed: 6800 RPM. Runs in either ...
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80 views

Output impedance function generator, limiting the current

I've the following schematic: simulate this circuit – Schematic created using CircuitLab Now the R of 50 ohm does limit the current that be supplied to the load. Is there a way to be ...
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1answer
49 views

Is it possible to charge/discharge this cap fast enough?

What I have, is a common 12-pulse rectifier with its bridges in series and I included a snubber between DC-link and rectifier output. Is important to note that all inductances before the rectifier are ...
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2answers
329 views

Rectifiers in parallel - mosfet

I see the question has been asked a few times about using rectifiers in parallel to get a higher current rating and this is not advisable however I wanted to ask how this would apply to a active ...
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310 views

RC snubber on mains connected bridge rectifier

I am designing a SMPS (90-230V) that has a bridge rectifier connected to the mains (of course after x2 capacitor and common mode choke). We need this SMPS not to pollute with noise the mains , so we ...
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51 views

Commutation overlap symmetry

Let's say we have three phase diode (ignore SCR in the picture) rectifier: With no source inductance, diodes are conducting at following angles: Diode 1: 30º < X < 150º Diode 4: 210º < X &...
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54 views

Capacitive-load derating for bridge rectifier

I'm confused about the precise meaning of the derating info/graph for capacitive loads for the Visahy 2KBPxxM-M4. I get it that the current rating for capacitive loads is less than for resistive/...
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875 views

Average output voltage of single-phase thyristor-controlled bridge converter

This question is highly related to this one but I don't find the answers satisfying. I'm a bit confused about the equation for the DC output voltage of phase-controlled bridge rectifiers. \$V_{o_{...
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432 views

What happens to the load when a bridge rectifier is in over-voltage condition?

Please read carefully, this may or may not be trivial: Your bridge rectifier (Schottky diode based) is rated for 60 Volts Maximum Peak and the AC wave peaks at 65V for a short period of time. What ...
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2k views

Bridge rectifier output higher than input

I have an electromagnetic dc brake rated at 110 Vdc. When voltage is applied, the brake is on. The main power source is 380Vac which is connected to a step down transformer with 110 Vac output. The ...