Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [full-bridge]

136 questions
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Why does current flow from the most positive to the most negative in three phase system?

I put the following circuit in a simulator to see how it works. I understood it but I have a question: At the time of the vertical green line, The simulator shows me that the current flows from the supply of phase 1 because it is the most positive.…
Michael George
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How to improve the full bridge / half bridge start up time?

I am trying to find out a way to improve the rise /start up time of a series LC circuit placed in a full bridge (or half bridge) circuit. Here is a simplified schematic. The circuit works very well, the voltage across the inductor reaches 500V, the…
Flo
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3 answers

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 smoothing capacitor was calculated in order to have…
Dimitar Zhekov
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4 answers

Full bridge HVDC to modfied square sine - random half side MOSFET burn

I am trying to make a step-down 350V to 220V voltage converter. I decided to go with rather simple circuit of full bridge MOSFET inverter since my loads are only resistive or switched. I had built it and tested today, however, without any success.…
user92809
5
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2 answers

Another 'What is this component?' question

I have looked through all the other 'what is this component' questions and have not found my component. I am looking for the component in the red box. It is from a rectifier circuit off a 1973 9.8 hp Mercury 110 Outboard. I ripped the silicon off…
Treflip
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2 answers

Smoothing a Full-Wave rectifier voltage

I was reading about full-wave rectifiers and came across the schematics below which the capacitor C can smooth its voltage, but I didn't understand one case: We know that when the rectifier's voltage begins to falling from its peak, the cap C starts…
Abbas Molaei
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Connecting Voltage Regulators 7812 in Parallel for High Current

Could I use two L7812 voltage regulator ICs in parallel to get 12 volt and more current that with just one?
payton_2624784
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Why do I get high DC current in grid tied inverter output?

Edit: Added gating signal waveforms. Changed some of the graphs, I accidentally put a test circuit waveforms the first time. Current is not that high but offset is there and current is high for a lower inductance. I am new to using PLECS and power…
Noobification
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Understanding purpose of components in a half bridge driver circuit

I'm currently trying to learn and understand about creating an H-Bridge using two half bridge drivers. The half bridge drivers I have are IR2184. I found a circuit diagram someone else has designed using the same driver ICs but I have some questions…
m3z
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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 DC motor driver that can provide at least 50A…
Zaido
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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 "full bridge" to oscillate the antenna at 125 kHz, 10 Vpp…
Helpful
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How can I get rid of this distortion?

I'm trying to build a 16kHz single phase, full bridge PWM inverter, Vdc=380V, 2kVA rated. When I load the inverter a little bit, the output voltage waveform is looks like this: simulate this circuit – Schematic created using CircuitLab I have…
Das D.
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spike in the Full bridge SMPS

I have a full bridge SMPS and I am measuring the voltage across the output´s diodes on the secondary side. As you can see the voltage spike changes by changing the output current, for example at zero output current the spike is arount 32V, while…
Nakh0d4
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Single Phase Full Bridge Inverter - I Can't figure out which PWM Control Technique is used

I have the following Single Phase Full Bridge Inverter and a PWM control method which in my language is called "asymmetric mode". I understand how it works but I can't find any documentation written in English language about exactly this technique.…
NumLock
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Can multiple IGBTs share voltage?

I'm building a solid state tesla coil, which requires me to switch very high voltages at high speed to achieve resonance. The problem: I can't find any IGBTs that can switch the voltage I need. In theory, I will have four IGBTs in a full-bridge…
TheDoctor
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