[jero]

The 2SK4033 MOSFET is a logic-level MOSFET with a maximum drain-source voltage rating of 60V and a maximum continuous drain current rating of 30A. It should be suitable for your application, as the maximum current draw of your motors is only 800mA. However, you will need to make sure that the gate voltage of the MOSFET is high enough to fully turn it on, as the Atmega328 microcontroller is powered at 3.3V.

Regarding the diode, it is generally recommended to use a diode in parallel with the motor to prevent voltage spikes when the motor is turned off. The MBR360RLG is a Schottky diode with a maximum forward current rating of 3A and a maximum reverse voltage rating of 60V, which should be sufficient for your application. Contact any professional for more information.

[digitalindia]

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S.Gupta

[sonalford]

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[rhneoopy]

Hello

I am attempting to control a small DC motor (on/off one direction
only)
with an avr microcontroller.
After extensive googling it was obvious that a mosfet was
needed + pwm control.(relays and solid state relays were excluded and
triacs alternistors scrs and quadracs were too exotic to consider)
Unfortunately the number of mosfets is enormous and most datasheets
do not contain the necessary information (for the uninitiated) to make
a decision on which mosfet to use.
Could anyone please indicate any book www-site application note or
news
posting that provides information on how a mosfet for an application
is
selected?
Moreover assuming that the load is a light bulb and we dont want any
kind of protection for the mosfet ,is it possible to drive it using
just a microcontroller (ie mcu pin connects to mosfet pin and the rest
of mosfet pins connect to load/ground/Voltage without other special
components)?
I have seen elaborated circuits with all kinds of protection for the
mosfet
and mcu and mass production quality however i just want to learn how
to control
a small load and understand how it was done.I am sure this simple
first step would be a great incentive to try to understand the more
complex matters that are involved in power electronics.
Copying what you cant understand is no fun at all and its dangerous
also.

[Pipey]

You can check to see if there is a manual in the box you bought, or ask your seller.

[Duoluowan]

Is there a data sheet for this microcontroller?

[mahanoor]

Hi all

I want to know what should i do to control the speed of 5A 12V dc motor using IRF44n mosfets I want to drive it by a AVR atmega32 micro controller.So please guide me.

Supply voltage =12vdc
load =max 7A

9770-2005feb14_amd_nt03.jpg

[vivo]

I'm developing a nano quadcopter using an Atmega328 microcontroller, powered at 3.3V, and very small brushed DC motors. The average current used by these motors is about 800mA @ 3.7V.

Initially, to drive them, I used an L293D motor driver but this component was quite inefficient. The current measured when the motors ran at max power was about 500mA and so the thrust was much lower then it should be.

Now, to solve this problem, I would replace that motor driver with 4 logic level MOSFETs. After a long search, I find 2SK4033 (http://www.kynix.com/Detail/968058/2SK4033.html).

Do you know if it should work? Do I have to use it in conjunction with a diode? If the answer is "yes", what about MBR360RLG?

I chose these components also because I can buy them from the same online store.[/url]