Electrical Engineering Stack Exchange
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Questions tagged [l298]

Anything related to the L298 integrated circuit. The L298 is a high-voltage, high-current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, and DC and stepping motors.

Anything related to the L298 integrated circuit.

The L298 is a high-voltage, high-current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors.

See also the ST L298 datasheet.

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Problems with L293, L298 and SN754410 H-bridge drivers on a low voltage supply

This question is about the following three integrated H-bridge drivers: - L293 or L293D (D = protection diodes added) SN754410 (protection diodes included) L298 (no protection diodes) Time after time the same question keeps coming up - someone is…
Andy aka
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Why don't flyback diodes in H-bridge damage power supply?

I'm currently learning about driving a small DC motor (~ 5V). My research so far indicated that a L298N might be a good choice to quickly get something up and running. However, I'm also trying to understand what is exactly happening (i.e. the…
s1m0n
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Problem with the L298 datasheet

I was studying the L298 datasheet and I noticed something; So basically an H-bridge contains two PNP and two NPN transistors as shown in the image: but in the datasheet, there are no PNP transistors used. There were some tutorials out there on how…
Parsa Showkati
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How many control pins needed for L298N H-Bridge?

I have a simple robot with two DC motors. Using the L298N Dual H-Bridge, what's the minimum number of control pins I can use to give me forward, back and turn? Here's a typical setup for the chip. It looks like I'll need 6 control lines to control 2…
Toby Jaffey
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L298 output voltage is too low

I'm trying to use an L298N and an Arduino UNO R3 to drive a bipolar stepper motor. To simplify things, I'm just trying to get a 12v output from either output-1 or output-2 of the l298 (then I can write up the 2nd h-bridge in the l298 the same way…
Matt
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How to power a 24 VAC pump with 24 VDC?

I want to power a 24 VAC vibration pump (48 W 50/60 Hz, often used in coffee machines), and control it with a microcontroller. I've got an existing system that is powered with 24 VDC. A standard DC-DC converter powers the microcontroller. I thought…
empewoow
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L298N constant output power

I have assembled the motor driver circuit using L298N seen below, hoping that it would work without any problem. For some reason that I do not understand, the output power is constant. I say constant because; When nothing is connected to output, I…
Ekrem Kılıç
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L298 IC motor driver - how to wire and use correctly?

EDITED. I found that my supply of 3V was insufficient as there are voltage drops across the transistors. I replaced the 3V supply with 4.5V and the motor ran fine - although now my 3V motor has 2.5V across its terminals (3.3V to 0.8V). I did not…
sherrellbc
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Powering Stepper Motors Using Drivers

I am working on a project involving several stepper motors, I have chosen the L298N as the driver - and my system supply is a switching power supply 12V 15A. My question is, how can I connect the 12V 15A supply to the L298N? I do understand the…
james
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Why are the capacitors on the image being used with the DC motor?

Why are the capacitors on the image being used with the DC motor? For my arduino aplication with L298n is ok to keep or remove them?
godolomn
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Having trouble with L298N H-Bridge IC

I cannot understand how this IC works from the block diagram given in the datasheet. I understand the concept of an H-bridge, but cannot figure how this one operates. I drew on the schematic to illustrate my confusion. To run a motor in the given…
sherrellbc
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Why does the L298N schematic supply Vcc to diodes?

I have been studying the L298N motor driver module to re-implement it as an exercise to learn PCB design. Something I am confused by in the schematic of the module is why Vcc is supplied to the diodes (circled in red below.) I understand the…
random_coder_101
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Random output in an optical encoder!

I have a DC geared motor with an optical encoder. I can read MITSUMI M25N-2R-14 2241 and 25GA-370-12V-330RPM on the motor. I'm using this simple code to control the position of shaft. it works fine when I test it manually (turning shaft with hand…
2012User
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L298 Flyback diode connects to ground

On the L298 datasheet (http://www.sparkfun.com/datasheets/Robotics/L298_H_Bridge.pdf), the Bidirectional motor control application example (Fig 6) shows that the need to be two diodes connecting the ground. I understand that you connect a flyback…
tuzzer
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My DC motor slows down and stops while using an L298N motor driver with an Arduino Uno

Whenever I run a program for running the DC motor, the motor suddenly slows down and finally stops, I don't know why it happens. I use an L298N motor driver, an Arduino Uno, and a 9V battery for motor and separate power for the Arduino. code: int…
Amit Nikhade
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