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Questions tagged [full-bridge]

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What protections should I include in a half-bridge MOSFET driver that uses discrete components? [closed]

As a learning exercise, I designed a half-bridge MOSFET driver using discrete components. I am using NPN FETs on both high and low sides and using a bootstrapping diode and capacitor for the high side ...
Mister Oogway's user avatar
3 votes
3 answers
1k views

Strange pulldown resistor behavior with power MOSFET and Full Wave Rectifier in LTSpice

I've been having some trouble getting a pulldown resistor to behave as expected in LTspice. Here are two screenshots of my circuit. This circuit has a full wave bridge rectifier convert AC (USA ...
but_why's user avatar
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1 answer
31 views

Zero Voltage Switching (ZVS) in Conventional Full-Bridge DC/DC Boost Converter

I am trying to design a Conventional Full-Bridge DC/DC Boost Converter with the following parameters (I am not sure if you need them); Input voltage: 24 V (DC) Output voltage: 400 V (DC) Output ...
Nafi Can Ereli's user avatar
2 votes
2 answers
157 views

Output of a stand-alone full wave rectifier is different from the one in the circuit in which it is implemented

I'm trying to simulate an evening lamp using a NE555 timer and a relay. To do so, I'm stepping down the 230V AC household voltage to 16V by an RC circuit as shown. Now, when I take a stand-alone ...
rire's user avatar
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3 answers
60 views

Power output of a full bridge diode rectifier

Assume a simple circuit with a 12 V (RMS) AC supply and a 100 ohms load resistor. The power dissipated is P = V^2/R = 1.44 W. Now assume that a full bridge diode rectifier (without filtering) is ...
leheim's user avatar
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0 answers
32 views

How to choose Duty Cycle value for a Full-Bridge DC/DC Converter

I've noticed that while designing DC/DC converters, some sources (at the bottom of the website, comment of Benjamin Lough) suggest a "rule of thumb" duty cycle of 70%, while others (This is ...
Nafi Can Ereli's user avatar
1 vote
0 answers
60 views

Use a pair of half-bridge drivers to make a full-bridge driver

I intend to use a pair of half-bridge drivers and a logic gate to make a full-bridge driver for controlling my DC motors with 3 standard input pins of Enable, Direction, and Arduino PWM. I looked at a ...
hrsk2002's user avatar
0 votes
1 answer
101 views

Why is the load supply (VBB1) on my A3967 shorting to both OUT1A and OUT1B when the stepper motor is disconnected?

I am utilizing the A3967 Allegro microstepping driver with translator. The problem is that I'm burning out the driver when the stepper motor is seemingly disconnected. This doesn't happen every time I ...
CADcoder's user avatar
2 votes
2 answers
256 views

Class-D amplifier output rings when connected to LC filter

I made a class-D amplifier with an output transformer, as you can see in the simplified schematic. Gate resistors are actually 10 Ω, not 2.2 Ω. The supply is 24 V, the PWM signal has a frequency of ...
mtx4's user avatar
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2 votes
1 answer
76 views

How would I create an analog block function in LTSpice?

I'm trying to create a small-signal model of a PSFB converter in LTSpice. The blocks in red are what I am trying to create, essentially a multiplier block which computes various .PARAM parameters that ...
user353165's user avatar
1 vote
2 answers
109 views

Poor efficiency of an H-bridge

I am simulating an H-bridge/class-D amplifier based on four GaN transistors with integrated gate drivers (NV6113 from Navitas). I am driving the gates via PWM signals where the PWM frequency is about ...
Charly's user avatar
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2 votes
2 answers
163 views

What is the average value of current in uncontrolled rectifiers with rl Load

I am trying to calculate the average value of a current in single phase rectifier half wave and in the full wave with RL Load. The thing that I am finding interesting is that in all the tutorials and ...
Badr Eddine's user avatar
2 votes
1 answer
66 views

HIP4081 Full Bridge FET driver peak pull up/down current

The datasheet for the HIP4081A bridge driver references a limit of 2.5 A "pull up"/"down" current. I thought the maximum load current in a bridge is limited by the FETs themselves, ...
Freeman's user avatar
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1 vote
2 answers
162 views

Full Bridge Rectifier Schematic Analysis

I am working on a circuit of an old 90's Terminal Applicator and noticed it has AC power coming in, then stepped down with a transformer, and then going to a pair of full bridge rectifiers. One goes ...
Erik Vincent's user avatar
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1 answer
157 views

Bridge rectifier with filter capacitor [duplicate]

I have a circuit here for a full-wave bridge rectifier with a Vdc of 18.773V, and I understand it perfectly. This is my first time encountering this type of problem. When I started using a capacitor, ...
spinachpizza_'s user avatar
1 vote
1 answer
342 views

How is the full-wave bridge rectifier still functioning?

How is the rectifier still functioning when one of the lines is cut-off?
spinachpizza_'s user avatar
0 votes
1 answer
113 views

PWM generation for the transformer using SG3524N

I was looking at one of the schematics of the filament board of an x-ray machine, where they had used the SG3524N for the generation of PWM and MOSFETs for the generation of an alternating voltage for ...
kam1212's user avatar
  • 595
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1 answer
66 views

Advice on measuring relative speed and position of an active transmitting and reveiving object

Using multiple transmitter/receiver stations on ground and the doppler shift to measure relative velocity and position of an airborne active receiver/transmitter in low altitude (0-2 km). I want to ...
leikqon's user avatar
1 vote
1 answer
103 views

Issues with a full bridge rectifier, receiving output approximately half of the expected output

I have receiver circuit for a wireless power transfer circuit. I have connected the circuit as shown in the image below. The circuit has a full bridge rectifier (DBS103S-T) which is then followed by a ...
EmeraldMonk's user avatar
0 votes
1 answer
110 views

I have a capacitor across a full-bridge rectifier and a AC currrent source. I am not able to understand why the input is a square wave?

You can see the circuit below. I don't have a lot of experience with AC current sources. Hence the confusion.
lovepreet singh's user avatar
0 votes
1 answer
95 views

What is the effect of the dc link capacitor "rated ripple current" on the drain current of switching elements?

While using a capacitor with 2.3A rated ripple current as a dc link capacitor in the circuit (as shown in the picture below "Cd") I used, I replaced it with one with 2.8A rated ripple ...
Multicharger's user avatar
1 vote
1 answer
83 views

A bit of confusion with DRV8210DRLR motor driver

I am working with DRV8210DRLR motor driver, mouser says it is a half bridge controller, texas instruments that it is a H-bridge. I require to spin motor and be able to change direction, so I assume I ...
Dominykas's user avatar
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0 answers
104 views

Short circuit instance with a switching regulator

I am currently working on a receiver circuit for a wireless power transfer system. I made a basic full bridge rectifier with schottky diodes before.I thought of changing the diodes to a FBR IC and ...
EmeraldMonk's user avatar
5 votes
3 answers
474 views

Bridge rectifier circuit with a step-up transformer

I have been experimenting with a full-wave bridge rectifier in LTspice. I am trying to step up 120 V AC/60 Hz to 1 kV DC for a load of around 2 kΩ. The step-up transformer has a ratio of 25:9. The ...
DRF's user avatar
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0 votes
1 answer
401 views

How can I properly measure the output of a full wave rectifier using an oscilloscope and a function generator?

I would like to measure the output signal from a full wave rectifier in a proper way using an oscilloscope. The sine wave comes from the function generator and is 10 Vpp. Both devices are mains ...
Jerzy Przezdziecki's user avatar
2 votes
1 answer
123 views

Center tap vs diode bridge rectifier in Multisim

I made a full wave circuit in Multisim using a center tap. The result I got confuses me. I am expecting a full wave rectified sinewave but I keep getting a square wave. Also, the voltage in the ...
user avatar
1 vote
1 answer
85 views

Full-bridge rectifier is not working

I tried to copy the full-bridge rectifier circuit diagram but for some reason it's not working. I think the current is not flowing from the high-voltage circuit device because I tried to hook up a ...
peteblank's user avatar
3 votes
1 answer
133 views

My first circuit, can you critique please?

I designed my first circuit and tried to make it as good as I could. I would be very pleased if you criticize me on the issues that I am lacking and doing wrong. I made a 2-layer, full bridge brushed ...
Zaido's user avatar
  • 31
0 votes
2 answers
111 views

How does this bridge rectifier work?

I opened up a charger that charges a lithium battery. When I opened it up I noticed that the bridge rectifier looked like this: I thought they would use your regular type of diode like this: Can ...
JoeyB's user avatar
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1 vote
2 answers
475 views

Full-Bridge DC-DC Converter Transformer

I try to design a full bridge DC-DC converter (hard switch) and I have some concerns about it's transformer design. As I know its transformer doesn't store energy and it doesn't have an air-gap? If ...
Das D.'s user avatar
  • 319
0 votes
1 answer
54 views

In PS ZVS FB Converter, when the primary current flows through the diode D3, why does diode D5 on the secondary side conduct?

I'm learning a PS ZVS FB Converter, the circuit is as fellow: The waveform is as fellow. ip is the primary current of transformer. During the time [t2,t3], the circuit works as fellow: The thick ...
T L's user avatar
  • 487
1 vote
2 answers
386 views

Average Voltage of a fully controlled bridge rectifier

I have been given the above equation for the average voltage of a fully controlled bridge rectifier. Apparently this is only valid for continuous load current conditions. Why is this the case?
Dhillon's user avatar
  • 11
0 votes
0 answers
69 views

What is the most efficient circuit to control a 3-phase controlled rectifier circuit with the ability to control the firing angle?

I am trying to design a board to control a 3-phase full wave rectifier with the ability to control the firing angle (alpha) through a potentiometer or a selector, and I was wondering what are the most ...
Shamooooot's user avatar
0 votes
1 answer
543 views

Three-phase full-wave bridge converter maximum firing delay

According to the textbook Power System Stability and Control by Prabha Kundur, the maximum firing delay of a thyristor is 180° with the following explanation: Why is he considering eb with ea? Doesn’...
KMN's user avatar
  • 388
0 votes
1 answer
264 views

Full-wave bridge rectifier output not correct

I am testing a full-wave bridge rectifier built from four diodes. The input is taken from a function generator. The simulated circuit is working (image added). The problem is that the output I got ...
FutureEngineer's user avatar
0 votes
1 answer
90 views

How to short half of the secondary winding to the bridge rectifier? [closed]

How do I modify this circuit into a half-shorted one?
walter's user avatar
  • 11
1 vote
0 answers
106 views

Choose appropriate opto-isolator for 230 Vac zero-cross detection circuit

I struggle to understand the datasheet for opto-isolators. I am making a 230 Vac circuit with a full-bridge rectifier. What should I look for when choosing an appropriate opto-isolator? I've been ...
Mickolini's user avatar
0 votes
3 answers
568 views

Why is this ideal diode bridge rectifier simulation in LTSpice not working as expected?

I'm trying to simulate a full wave bridge rectifier circuit with the capacitor filter. The alternating voltage supply is 30 V at 50 Hz. The peak value for the voltage across the load is 28.5 V. ...
Anay Chadha's user avatar
1 vote
0 answers
43 views

TLE 2505 H-bridge not working

Using a 9.4 V power supply and the TLE 2505 H-bridge, I ultimately want to drive a DC motor. Currently I'm debugging using a 12 kΩ resistor in place of the motor on a breadboard and using an Arduino ...
Bob1852's user avatar
  • 11
1 vote
0 answers
234 views

Issues with KBPC5010 rectifier

I recently ordered some KBPC5010 full bridge rectifiers from Amazon, and I am not getting the behavior I expected. I am most likely missing something here, but am unsure if the Amazon product may be ...
zraxix's user avatar
  • 11
1 vote
1 answer
1k views

Phase Shifted Full bridge converter transformer design

I am designing a transformer for a phase shifted full bridge converter for voltage up conversion. My main concern is the efficiency, I am trying to reduce transformer loss to less than 5%. The total ...
Ransara Wijitharathna's user avatar
1 vote
2 answers
103 views

What will the output voltage will look like if we have non sinusoidal AC paired with capacitor?

I am currently studying for exam and a lot of questions are popping up in my head. What will Uout of a full wave bridge rectifier with a capacitor look like? I am talking about square, trapezoidal, ...
Dimitar.N's user avatar
0 votes
1 answer
103 views

Full wave active rectification for lower voltages?

I have been following these youtube tutorials on active rectification to learn more about the topic. https://www.youtube.com/watch?v=VR456CsHYx4 https://www.youtube.com/watch?v=arvNukW-jeo I simulated ...
Josh Girgis's user avatar
1 vote
0 answers
532 views

How to fix LED fixture not turning off completely when the switch is off

I have LED ceiling lights that are not completely turning off even when the switch is off. Sometimes the brightness of the glow is just to much for me and finally decided to do something about it. ...
DrakeJest's user avatar
  • 897
2 votes
2 answers
924 views

Why is a capacitor connected across the power MOSFET in the DC-DC stage of most SMPSs?

In many of the schematics of the DC-DC stage of SMPSs, there is an external capacitor connected across the MOSFET switch (across drain and source). Why is this capacitor required? MOSFETs have an ...
Vinayak P B's user avatar
2 votes
1 answer
162 views

Testing of HF transformer designed for phase shift full bridge converter(PSFB)

I have designed an HF transformer for a PSFB converter. Specs: Peak Primary Voltage = 800 V Peak Secondary Voltage = 176 V Turns ratio Np:Ns = 18:4 Primary Irms current = 12.38 A Secondary rms ...
Shubham Dhiman's user avatar
1 vote
2 answers
519 views

Why does a rectifier not short circuit?

Why does the current in a rectifier circuit not go through the diodes marked with the question marks in the picture and create a short circuit when the current is returning from the negative side of ...
mhmdghfr's user avatar
0 votes
1 answer
106 views

How to generate sinusoidal signal using hybrid SPWM modulation in single phase inverter?

I understand there are bipolar, unipolar SPWM. Since the switching loss is quite high in these, there also exists a hybrid scheme where for half of the cycle the gates are either on or off reducing ...
KesSap's user avatar
  • 1
1 vote
1 answer
3k views

Difference between h-bridge, dual half bridge and quad half bridge

Note: I am beginner. I'm looking at motor drivers on this website Various motor drivers have different specification for output configuration, i.e. :h-bridge, half bridge, quad half bridge and PWM. I ...
user13174343's user avatar
0 votes
2 answers
278 views

Full bridge inverter failing after given input voltage

For my master thesis, I am designing a wireless power transfer using magnetic resonance. For this purpose, I designed a full bridge inverter which is connected to an autotransformer whose output is ...
Jean Louis David's user avatar