Questions tagged [full-bridge]
The full-bridge tag has no usage guidance.
150
questions
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 ...
- 33
0
votes
1
answer
41
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 ...
2
votes
2
answers
164
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 ...
- 23
0
votes
3
answers
66
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 ...
- 21
0
votes
0
answers
58
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 ...
1
vote
0
answers
78
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 ...
- 31
0
votes
1
answer
105
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 ...
- 1
2
votes
2
answers
277
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 ...
- 91
2
votes
1
answer
96
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 ...
- 73
1
vote
2
answers
116
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 ...
- 752
2
votes
2
answers
213
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 ...
- 23
2
votes
1
answer
73
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, ...
- 307
1
vote
2
answers
209
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 ...
- 87
0
votes
1
answer
169
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, ...
- 125
1
vote
1
answer
343
views
How is the full-wave bridge rectifier still functioning?
How is the rectifier still functioning when one of the lines is cut-off?
- 125