DC motor speed controller, pwm continuously variable speed control switch 40v, US $140 – Picture 0

DC motor speed controller, pwm continuously variable speed control switch 40v, US $140 – Picture 1

DC motor speed controller, pwm continuously variable speed control switch 40v, US $140 – Picture 2

Dc Motor Speed Controller, Pwm Continuously Variable Speed Control Switch 40v

US $140

???, ???, China
Jan 29th

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Technical indicators: (1) Operating voltage: DC10V-DC40V (2) controlling the power: 0.01-180W (3) Quiescent Current: 0.02A (standby) (4) PWM duty cycle: 10% -100% (5) PWM frequency: 25khz (6) Size: 5.5 * 5.3 cm PWM Description: Called the pulse width modulation: Pulse WidthModulator, referred to as the PWM. DC circuit because of its special properties, often used as a the lamps dimmer or DC motor speed control. This circuit is the principle of making the motor using pulse width modulation (PWM) controller. The ways to control the speed of the motor has two advantages: It mainly by changing the duty cycle of the square wave output, such that the average load on the turn-on time from 0-100%, in order to achieve the object of the adjustment load luminance / speed. The use of pulse-width modulation (PWM) dimming / benefits of the governor is the energy of the power supply can be fully utilized, and high efficiency of the circuit. For example: when the output is 50% of the square wave, pulse-width modulation (PWM) circuit consumes power energy is also 50%, i.e. almost all of the energy is converted to the output of the load power. The the common resistance buck governor, to make the load to obtain maximum power output power 50% of the power, the power supply must provide output power of more than 71%, of which 21% is consumed in the resistance of the pressure drop and heat consumption. Using pulse width modulation (PWM) mode so that the load at work to obtain the full supply voltage, this will help to overcome the inherent resistance of the coil motor and the motor generates a larger torque. Package : 1x Speed Control Payment We accept the payment via PayPal only. Payment is expected within 5 days of the auction's end. Availability of the item can not be guaranteed if no payment received in 3 days. Please don't purchase if you are not intend to pay. Unpaid item will report to eBay and get the warning. . Shipping & Handling 1.Items are shipped from china.we will send out within 2 working days after receive the money. 2.We usually send the parcel by Singapore Post Air Mail or HongKong Post Air Mail. After send out,most country will arrived the parcel in 12-25 business days. We also can provide Express,such as Fedex,DHL,EMS,usually 3-7days to most country.If you need Expedited shipping,contact us. The global shipping is difficult to control sometimes,if you havent receive after 25days,contact us,we will check for you. 3.We send to the address of ebay add info,please check your add info of ebay is correct. 4.Some conutries,such as Italy,Brazil,we can ship to,but it usually needs more than 30days to arrive,if you dont care the long time of shipping,contact us. Warranty and Return 1.If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back. Please contact us before you return it. 2.If item is defective in 14 days, We will send you a replacement without extra charger, or offer refund after we receive the defective item. 3.If item is defective after 14 days, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping free. Feedback please leave behind your positive feedback for us after you receive the item, no matter whether you are satisfactory with my item, we will leave behind the same to you. If you want to leave a negative feedback,please contact me at first, we trust that everything could be issued before you leave it. Contact us We work 6 days except Sunday and public holidays. Please feel free to contact us anytime if you have any questions , We will try our best to help you.