DC 40A DC Motor Speed Control Reversible PWM Controller 12V 24V 36V 48V 2000W

DC 40A DC Motor Speed Control Reversible PWM Controller 12V 24V 36V 48V 2000W

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Product Feature:

You can adjust the speed of the motor and the rotation direction. 

The max current of this controller is 40A.

 

Power Requirement

DC 9-50 V

Rated Current

40 A (Maximum Output Current)

Frequency

25 kHz

Control Motor Power

0.01-2000 W

12 V: 480 W (max), 24 V: 960 W (max) 

48 V: 1920 W (max), 50V: 2000 W (max)

Regulation Range

0-100%

Function

Forward to Stop to Reverse

PCB Size

100 x 75 mm (inch: 3.9" x 2.95")

Weight

175 g

 

How to wire it:

Please check pictures for more details.Package list:1 X DC Motor Speed Controller

 

 

What is the PWM?

Pulse-width modulation (PWM) is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors.

 

The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.

 

The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.

 

The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.

 

The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there being practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.

 

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