Questions tagged [h-bridge]

H-bridge is common circuit used for applications where there is a need to reverse the direction of current flow. Such application is for example: reversible motor control.

Filter by
Sorted by
Tagged with
0
votes
1answer
31 views

6 motors with TB6612 driver + power requirements

I am looking at the ServoCity Bogie platform - it comes with 6 motors. The motor listed specs are: Suggested Voltage: 4.5 VDC No Load Current: 190 mA Max. Load Current: 250 mA I ...
0
votes
1answer
58 views

Recommendations and Advice - Motor Driver for 12V Gear Motor with Magnetic Encoder

I am building a robotic insect leg that would be actuated by 2 DC motors for pan and tilt motions. Total weight of the leg is about 1.5kg and 1m long (moment arm ~0.5m). Magnetic encoder would be used ...
1
vote
1answer
69 views

unexpected inefficiency of a motor driver

I purchased one of these motor drivers and noticed that i was not getting as much time from my battery as i had expected. I tested the current draw when connecting my motor directly to the battery and ...
1
vote
2answers
898 views

What is the direction of current flowing through the freewheeling diodes in H-bridge if I use BJT?

I am new to electronics.the question is buzzing in my head since i first saw the H bridge configuration.please answer the question briefly
3
votes
1answer
234 views

DC Motor to open a door

I want to open a door using a DC motor. I've estimated that the required power in the worst case would be around 35-40W (considering a ~80% efficiency). The whole is controlled by a Particle Photon. ...
0
votes
2answers
3k views

Drive motor voltage / other specifications of Roomba 650

I salvaged some parts off my dead Roomba 650, and I'm trying to use the drive motor assembly . I got the pinout of the connector but I don't know what voltage / PWM / other specifications are there ...
1
vote
1answer
115 views

Comparison of the efficiency of DC motor current limiting / control methods?

I am using the wheels and motors of an RC toy car as a simple robotics platform. The car has 2 motors, one drives the back wheels, the other steers the front wheels. The steering motor is stalled by ...
0
votes
2answers
981 views

12V Arduino Dual Bridge to supply at least 5A [closed]

I am looking for a 12V Dual Motor Controller that can supply at least 5A per channel for two 12V motors, and that can be used with an arduino. Do you know of any product with those specs? Thanks
4
votes
1answer
241 views

What is the purpose of electronic braking in motors?

I have a Micro Magician v2 micro controller. It has a A3906 Dual FET “H” bridge motor driver built in. In the manual it states "Electronic braking is possible by driving both inputs high." My first ...
3
votes
2answers
1k views

Odd L293D behavior: Pin 16 seems to act as enable

I have a chip that is labeled L293D with a small 'ST' logo, which does not behave like I believe a L239D should: I have the chip on a breadboard with pins 4,5,12 and 13 connected to the ground rail. ...
0
votes
3answers
797 views

H-Bridge using atmega8 microcontroller

I want to use my atmega8 uC as a h-bridge. Can anybody give me the source code using C, so that the microcontroller acts as an H-Bridge.
8
votes
2answers
2k views

H-bridges and stall current

For a DC motor with a stall current of 950 mA, what should the H-bridge's current rating be? What will happen if we use our H-bridge L293D whose max. output current is 600 mA?