A circuit which allows power to be applied to a load in either direction. Often used for reversible motor control.

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Low cost H-Bridge circuit for PWM

I try to design a (relatively) low cost H-Bridge on N channel MOSFETs. I need to drive 8.5A peltier device with 12V and (roughly) 20kHz PWM. (after reading some of the comments I changed this ...
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31 views

What voltage reference is the pwm signal using in the QUADRUPLE HALF-H DRIVER SN754410NE?

I have a QUADRUPLE HALF-H DRIVER SN754410NE, and i saw online that the 5V from the arduino goes to pin1, pin 9 and pine 16 and on pin 8 you attach a separate 5v supply that has at least or more than ...
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24 views

Will my potentiometer provide enough amperage for my h bridge?

I am sending pwm requests to my H-bridge from an arduino. Each pwm signal is a precise so I need to have the h bridge drive it by that specific amount. I want to use 5V for the h bridge supply, so i ...
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2answers
48 views

Diode parallel to resistor on H-Bridge MOSFETs gates

I was looking at a TC4467's gate driver datasheet and there is one thing there that I haven't seen before when reading about H-Bridges. On the schematic of example H-Bridge motor control there is a ...
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37 views

Analog controlled H-Bridge to digitally controlled?

I am using this circuit to control a motor. Initially I was using 12V PWM generated from a 555 astable circuit. I am now trying to make the circuit controllable via an 8051 Microcontroller The ...
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60 views

H-Bridge with 1 PWM and 1 Output

I'm looking for a solution to control the direction of a powerful DC Motor. I came up with the idea to use a H-Bridge. Since the motor uses up to 3.2A the amount of possible H-Bridges is quite ...
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56 views

Boost converter as power supply for H-bridge

I am looking for a way to be able to power the H-brirdge from a boost converter. I have a voltage source of 13V to 15V and would like to boost that up to around 17V (accuracy isnt that important) at ...
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32 views

H Bridge Voltage Drop w/ Motor Installed

first post after searching the net/ site for quite some time. I have this H-Bridge circuit http://www.circuitstoday.com/h-bridge-motor-driver-circuit I'm using 3 AA batteries to test this BEFORE ...
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2answers
64 views

Will back emf damage a lithium ion battery?

I am prototyping a battery-operated toy containing a couple of motors - these motors are driven by a pair of h-bridges which are controlled by a micro controller. I'm running this whole thing from a ...
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56 views

H-bridge problem with TIP122.

I tried to make H-bridge by TIP 122 transistor. I used 9V for a VCC. I used push button to control H-bridge, and it's fine. Then I used Arduino 2560 with two digital pins for driving H-bridge. But the ...
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48 views

How to generate the gate voltage for the P-channel transistors for an H-bridge controller

I would like to create an H-bridge out of discrete N and P-channel transistors as a nice demo of the concept for a high school course. The driver is to be an Arduino should that affect your design ...
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37 views

What is the difference between an H-Bridge Motor Driver and Dual motor driver board?

I don't understand the difference between a motor-driver like this IC H-Bridge Motor Driver and a motor-driver like this Dual Motor Driver Board. When reading about them they do the same thing but the ...
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3answers
108 views

Soldering, Chips for Beginners

I am currently running a club for kids (9-11) for Arduino and we are making a robot and are moving on from motor/transistor drivers to half-hbridge (so we can go backwards). The kids are learning to ...
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1answer
40 views

AVR's and DC Motors\Servos

I've been browsing around looking for some information on motors\servos and AVR's (my MCU of choice). Motors\servos are in my gray area, meaning I'm still not too into them, but I could do something ...
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26 views

PWM capable H-bridge, best low side drivers

Im trying to make a high current h bridge 24volts around 60amps to start off with however I might decide to up it 120amps continuous if I can easily. I have already made a simple high side mosfet ...
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56 views

Forgot to connect ground for H-bridge, now it doesn't work?

I have an TLE5206 h-bridge IC that can handle 5 amps and I'm giving it a supply voltage of 12V. I was just testing the motor with the power connected but I noticed that the ground cable broke off ...
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1answer
56 views

Relay-like digital potentiometer?

I'm sure I'm not the first person to want to control an AC motor with their microcontroller and I've found a good relay module to use, however, I still want to be able to control the voltage via the ...
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4answers
138 views

Connecting two power supplies with same voltage rating to increase current output?

My h bridge requires 5v 1 amp. I have a 5v 500mA and another 5v 850mA power supply lying around. Can I join the +ve of both and send that signal to the h brdige so that it can have enough current of 1 ...
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5answers
428 views

Can someone check over my schematic?

This is the first schematic I have made that was not a simple LED. I want to know if it seems good before I go and build it (and buy the parts). Here is the schematic: Here are a few of my ...
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2answers
104 views

Measure current through H-bridge using shunt

I am trying to measure the current through the H-bridge and brushed DC motor and shut it off if it exceeds a pre-set limit. This is how I have it currently set up: simulate this circuit – ...
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2answers
308 views

Level shift circuit MCU to MOSFET

I have a H-bridge that is being supplied by 12V and using around 10A. I am turning it on/off with a microcontroller that has an output of 0V-5V. The switching frequency is "super low" so the gate ...
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1answer
54 views

H-Bridge Power Supply Erratic Behavior

Description: I have built a copper plating tank to plate circuit boards and am using a technique called Reverse Pulse Current plating to help aide in the copper plating process. What that involves is ...
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89 views

Boost converter as high-side MOSFET driver

I have a circuit where microcontroller drives a H-bridge which is powered from 12V. I am having a problem with driving the high-side MOSFETs. I will be turning the H-bridge on/off only couple of times ...
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1answer
179 views

Why to double reverse diodes in parallel to MOSFET?

I am building an H-bridge by this article. In the H-bridge MOSFETs IRF9530 and IRF530 used. By datasheet of Vishay both of MOSFETs have reverse diode inside the package. So by proposed schematics ...
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99 views

Reverse recovery time of Schottky diodes

I am considering redesigning a IR2110-based H-bridge driver with 1N5819 because UF4007 he ...
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87 views

What will happen if I inject rated output voltage into secondary of a single phase transformer?

I have a mains rated transformer that takes 220V and gives me 12V. Now what if I connect it to a H-bridge drawing power from a 12V car battery like this? simulate this circuit – Schematic ...
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90 views

Using an L298 to drive 2 unidirectional and 1 birectional motor simultaniously

First up I am not an EE and am fairly new to this, so please forgive my ignorance. I have a project that requires me to control 2 unidirectional and 1 bidirectional brushless DC motor at the same ...
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1answer
62 views

Choosing bootstrap capacitor for MOSFET driver

I have IRS2011 high/low side MOSFET driver, for driving IFRZ44N MOSFETs configured in H-bridge. How would I calculate the bootstrap capacitor required by the IC for driving high-side? I am aware of ...
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2answers
138 views

H-Bridge flyback diode selection?

I am wanting to make a motor driver using a SN754410 Quadruple Half-H Driver IC. The SN754410 requires external flyback diodes. Here is an example circuit: My question is, how do I choose which ...
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1answer
103 views

Boost 5V to 18V: charge pump + LDO or conventional boost converter?

I am trying to build a H-bridge driver using discrete parts. Now I have a problem regarding generating the 10+V gate voltage for the NMOSFETs I used. The H-bridge and its controls is like this: ...
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1answer
117 views

H-Bridge vs Mechanical Speed Controller

What's the difference and trade-offs between a h-bridge motor controller and a mechanical speed controller for controlling a brushed motor in an RC car? I have a cheap RC car that I'm trying to ...
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1answer
180 views

How to Run 12v 1A Electromagnet From Arduino (3v) Without External Power Supply

I have a project that I am working on that uses a micro controller to control an electromagnet that I want to run with a 3.7 volt battery. I would like to reverse the polarization on the electromagnet ...
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1answer
102 views

High Power H-Bridge with IR2125 Drivers Problem

I'm currently stuck on a problem when trying to drive a 140V DC motor using an H-Bridge with 4 high-power mosfets and 4 IR2125 drivers. I'm using as input to the drivers a signal generator of 5V in ...
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32 views

How to choose a single H-Bridge IC?

They all seem to pretty much offer the same features. On what basis am I supposed to compare single H-bridge IC's for a typical application of driving a smaller (<1A max) brushed DC motor, similar ...
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1answer
68 views

Bipolar stepper motor sequence, wiring and dual h bridge

Im facing some issues to figure out sequence of my bipolar(specifically) and unipolar stepper motor. However , I've managed to get Dual H Bridge but couldn't find out the example/documentation for the ...
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1answer
226 views

Over heating H-bridge MOSFET (irf9540)? [closed]

I have done the circuit in the picture : from here (modified Question): So two LEFT MOSFET (IRF9540 & IRF540) will be overcharged and so heating and DC motor speed is Constance and don't ...
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2answers
229 views

Latching solenoid control

I am working on a personal project that will involve driving a latching 9V/DC solenoid from an arduino. The circuit I've come up with is dependent on two things, that I haven't quite figured out yet: ...
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89 views

Driving high voltage MOSFET H-bridge

I am looking for suggestions on MOSFET transistors and logic for driving high voltage full H-bridge from a 5V PWM signal. I have a microcontroller that outputs a PWM signal 0V->5V. And with this ...
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2answers
222 views

Is my MOSFET H-bridge design correct?

Can anyone check over this motor controller design I made? I'm running off of a rudimentary understanding of electronics (just a hobbyist), so I'm not fully confident in it yet. Kamil EDIT: ...
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62 views

Torque control with H-Bridge via direction pin

Using the LMD18200 (H-Bridge) and the LM3524D (PWM regulator) I should design a torque regulation. I've found a circuit in the LMD18200 datasheet which uses the current feedback to adjust the PWM. ...
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1answer
108 views

Equivalent of IR2155 [closed]

I build a circuit based on IR2155, but it's not so readily available in my area. Is there an equivalent IC for IR2155?
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91 views

Anti-Parallel Diodes and H-Bridge

Does the anti-parallel diode forward voltage in a single phase inverter need to be lower than the body diode of the MOSFET? I have MOSFETs with a forward voltage of 1.2 Volts, and SiC diodes with a ...
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160 views

Using two half bridge drivers as a full H bridge - What bootstrap capacitor?

I'm trying to design a motor (brushed DC) speed controller circuit (to learn about such circuits). I decided to use two half bridge drivers (IR2184) to control my bridge. The circuit I've come up ...
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2answers
119 views

Will these heatsinks be sufficient for my mosfets?

I need to control 10 12VDC motors at ~25Amps, so I decided to make my own mosfet H bridges to control it ( with 2 n chan et 2 p chan ). I will need 10 H-Bridge, so 40 Mosfets. ( 20 n chan and 20 p ...
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64 views

change polarity of Solenoid

I am working on a project which includes a couple of Solenoids (Link to the used Solenoid: ...
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85 views

Relay voltage drop, a solution?

I simulated an H bridge with 2 relays and one motor in PROTEUS. Everything is 12 V and DC, I set relay coil resistance at 80 ohm ( I am replicating this : ...
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1answer
198 views

Bipolar stepper motor (Alfa Romeo 156 speedo) w/ L293D

I would like to use my Alfa Romeo speedo in my simrig, I have got the cluster pinout and the speed signal is coming from the ABS (Just like any other car, my BMW cluster works like charm). The only ...
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2answers
159 views

Basic h-bridge motor driver circuit for audio PWM waves with possible negative voltage

I need to control a DC motor with the PWM audio waves coming out of the audio jack of a device. The device will send a positive PWM to drive the motor forward and a negative PWM signal for driving it ...
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78 views

No output at H bridge during quick power drop

I used a H bridge with PMW control to drive DC motor in two directions. I observed a strange phenomenon that during quick voltage drop, the PWM output at M2 is cutoff, although the T4 gate PWM input ...
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1answer
102 views

H-Bridge with Darlington BJTs, static shoot-through

I have built the following H-Bridge with TIP122 and TIP127 Darlington BJTs: It is made from parts I had around, and I plan to use it for currents up to 2A with a VCC of 12V. Note that 1N4937 ...