Questions tagged [full-bridge]
The full-bridge tag has no usage guidance.
124
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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’...
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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 ...
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How to short half of the secondary winding to the bridge rectifier? [closed]
How do I modify this circuit into a half-shorted one?
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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 ...
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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. ...
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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 ...
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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 ...
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344
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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 ...
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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, ...
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86
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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 ...
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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.
...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Lazy full-bridge PWM control
I'm playing with a full-bridge driver:
Usually, you want to put an inverted PWM signal on IN1 and IN2 and take care of dead-time.
While writing the code for MCU I tried a simpler pattern:
put a PWM ...
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Control two DC brushed motors with two wires in common
I'm working on a retrofitting project. I need to control 3 DC brushed motors with full H-bridge drivers. In most scenarios the 3 motors have independent connections:
simulate this circuit – ...
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153
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Full-Bridge Mosfet Vds Waveform Problem
I'm trying to build a full-bridge dc-dc converter, PWM signals are ok but drain-source waveform has some problems. Here is drain-source waveform with a proper pwm signal on gate.
Then I decided to ...
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253
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Flowing back of current from capacitor filter to full bridge rectifier
Context:
Pg-485 of this pdf
Now we shall discuss the role of
capacitor in filtering. When the voltage
across the capacitor is rising, it gets
charged. If there is no external load, it remains charged ...
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Is there any way to reduce the miller effect on a mosfet bridge?
I got miller effect on a full bridge and I'm trying to get rid of it. Is there any way to reduce the miller effect on a mosfet bridge?
I'm using opto drivers with bootstrap circuitry to drive.
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Full bridge inverter using IR2110 giving output in patches
I have made a full-bridge inverter using IR2110 IC. The MOSFETs used are IRF540n. The bootstrap capacitor is 4.7uf. The diodes used are 1N5819 high-frequency Schottky diodes. The operating frequency ...
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Full-bridge output doesn`t work as expected
I am making a half-bridge amplifier and successfully managed to amplify a sinusoidal wave (simulates a sound signal). When amplified it has almost 100V of amplitude. It has a inductor and a capacitor ...
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What type of 24 VDC to 730 V converter is this?
The circuit below converts 24V DC into 730V. The circuit looks like a flyback converter but from what I know with the full-bridge rectifier at the output it can't behave like a flyback.
The feedback ...
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Can an H-bridge drive another bridge?
I'm using a low-frequency RFID IC that handles a bunch of the low-level signal decoding, but I'm hoping to get more range out of it. It has two TX pins (diagram below) that it describes as a "...
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For a full wave bridge rectifier, why does the oscilloscope does not show the rectified voltage in negative cycle?
I was trying to do a simple full bridge rectification. There is a strange problem. The oscilloscope does not show the rectified waveform in the negative cycle. The input is applied from a Keysight ...
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Isolated Type 3 Compensator
I'm trying to build a full bridge dc-dc converter and planning to apply a type 3 compensator(voltage mode). When I check the isolated feedback type 3, I've read some comments indicate that it's hard ...
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S domain transfer functions of full bridge inverter
I need to design an inverter circuit as in the schema. It is driven by the unipolar PWM method. I have a problem with the circuit. It would be great if anyone can help me.
I want to get the s domain ...
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What is the best number of PWM signals for Full-Bridge driving? (2 vs 4)
Full-Bridge resonant converter circuit:
Each transistor (Mosfet) has its own driver (ISO5852S).
I assumed that a full bridge could be controlled with two PWMs.
...
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Best positioning of snubber capacitors for Full-Bridge transistors
Two options for the location of snubber (film) capacitors.
In the first circuit, both capacitors stand up to before the bridge. In the second variant, each capacitor stands next to the half-bridge.
I ...
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253
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Oscillation in Class D amp design
I am building a class d amp circuit with base design from Great Scott's Class D amp which is found here.
I am trying to build and simulate the circuit in LTSpice with difference being I won't be using ...
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179
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Single-phase thyristor full bridge rectifier vs three-phase thyristor full bridge rectifier
For Single-phase thyristor full bridge rectifier compared to a three-phase thyristor full bridge rectifier, with regards the input current harmonics, does the three- phase rectifier have an advantage ...
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1.7 MHz Full bridge driver circuit for mist maker validation
I'm building an ultrasonic mist maker that can support 10 ceramic discs with a resonant frequency of 1.7MHz. I found the following circuit online, unfortunately, I'm a beginner in circuit design and ...
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How to determine if a load cell is quarter-bridge, half-bridge or full-bridge?
Im looking to purchase 4 disk type load cells for weighing applications but it doesn't mention what configuration it is in (quarter bridge, half bridge etc.) Is it safe to assume 2 wire load cells = ...
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Six-step (trapezoidal) BLDC motor driving strategy
It seems that a common driving strategy for such a motor is to use the 3 half-bridge topology depicted above, and use PWM to regulate speed and/or torque.
At any given moment, two phases ("wires&...
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Xl4061 board problem
I am building an amp for 6th order subs which is based on two transformers which have around 25 VAC, and I am trying to rectify them for 2 subwoofer module filter boards (12-32vdc) and for two TDA7498....
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H Bridge vs Half Bridge current sense
Are there any disadvantages in measuring H Bridge current only via 1 shunt resistor?
Since it will be made by hand on a perf board the only disadvantage will be the possible longer wires that connect ...
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How to drive MOSFET switches in a cascaded hybrid modular multilevel converter using a half-bridge driver "IR2103S"
I am trying to drive the MOSFET switches in a cascaded hybrid modular multi-level converter as shown in Fig. 1. Fig. 2 is used here to simplify the circuit and to present the problem (let's focus on ...
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Pitfalls of using only two diodes in a "full wave rectifier"?
Scenario:
I have a small signal from a Piezo element which I am amplifying using a fully differential amplifier. Thus, my gained output from this In-amp are "two" (sine) waves inverse of ...
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How do you find the peak-to-peak ripple voltage of a full wave bridge rectifier?
The 32VRMS secondary of a transformer feeds a full wave rectifier and capacitor filter as shown in
the circuit
The peak-to-peak ripple of the output voltage of this circuit needs to be less than 1V ...
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Calculation of switching transformer at 100kHz
I am not able to desgin transformer for switching frequency 100kHz. It´s easy to desgin usual transformer for 50 Hz. But I´m totaly out when comes to switching transformers. What material should I use?...
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what does this bulb need to work properly in this circuit?
This is the circuit, before it was working, but not anymore. I have an identical circuit and its ulb still working. I don't know where is the problem.
(https://i.stack.imgur.com/fPpZW.jpg)
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Output voltage ripple considerations
I'm working on a full bridge DC-DV converter, following the instructions on power supply cookbook.
It has a 350 V output, 2 kW total power, and a 30 kHz switching frequency. I chose a 5% inductor ...
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