300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module, US $9.99 – Picture 0

300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module, US $9.99 – Picture 1

300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module, US $9.99 – Picture 2

300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module, US $9.99 – Picture 3

300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module, US $9.99 – Picture 4

300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module, US $9.99 – Picture 5

300w Dc-dc Cc Cv Buck Converter 7-40v To 1.2-35v 8a Step-down Power Module

US $9.99

GuangZhou, China
Jan 29th

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General Interest Hot Products LM2596HV 4.5-60V to 3-35V Buck Converter $4.99 DC-DC Boost Converter 3-12V to 12V $5.69 1 Relay Module 5V 30A $6.49 enc28j60 Network Module $13.99 DC 2.5-30V 0.36" Red LED Two Wires Digital Voltmeter $3.99 DC Automatic Boost Buck Converter 4-35V to 1.25-25V 3A $9.69 DC-DC Boost Converter 10-32V to 12-35V 150W $7.99 300W DC-DC CC CV Buck Converter 7-40V to 1.2-35V 8A Step-down Power Module Features: Use a dedicated benchmark IC, and high-precision current sensing resistor, make more stable constant current, (when 20℃ to 100℃ constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver. Fixed turn lamp current is 0.1 times the current value (When charging, used to identify whether the battery is fully charged); High output current, the max output current can reach 9A. Low output ripple , high frequency capacitor reduces output ripple. Module parameters: Module Properties: non-isolated step-down module, constant current and constant voltage module (CC CV), charging module Input voltage: 7-40V Output voltage: 1.2-35V (continuously adjustable) Output Current: 8A, 9A the MAX ( power tube temperature exceeds 65℃ please add cooling fan ) Constant current range :0.2-8A ( adjustable ) Turn lamp current : constant current value * ( 0.1 ) , turn lamp current and constant current value linkage.For example, constant current value 3A, turn lamp current is set to 0.1 times constant current(0.1 * 3A = 0.3A). When adjust the constant current to 2A , then turn lamp current is 0.1 times constant current (0.1 * 2A = 0.2A). Turn lamp current is fixed to 0.1 time in this version( actually turn lamp current value is probably not very accurate ), it is for identify whether the battery is fully charged. Dropout voltage: 1V Output Power: Maximum power is about 300W, power tube temperature exceeds 65 degrees please add fan. Conversion efficiency : up to approximately 93% ( the higher output voltage, the higher the efficiency ) Output ripple : 20M bandwidth ( for reference only ) Input 24V Output 12V 5A ripple around 50mV ( excluding noise ) Operating temperature : Industrial grade (-40 ℃ to +85 ℃) No-load current : Typical 20mA (24V step down to 12V) Load regulation : ± 1% ( constant voltage) Voltage regulation : ± 1% Constant accuracy and temperature: the actual test , the module temperature changes from 25 degrees to 60 degrees , the change of the constant current value is less than 5% ( constant current value 5A) Dynamic response speed : 5% 200uS Potentiometer adjustment: clockwise ( increase ) , counterclockwise ( decrease ). The potentiometer close to the input port is for voltage adjust (CV), the potentiometer close to the output port is for current adjust(CC). Indicator : double color indicator. When charging the indicator is RED, fully charged is GREEN( No load is green ). Output short circuit protection : Yes , constant current ( constant current value you set) Input Reverse Polarity Protection: None, Output prevent backflow : None. Wiring: Terminal Applications: High-power LED constant current driver , Lithium battery(or Iron battery) charge, 6V, 12V, 14V, 24V battery charge , Nickel -cadmium nickel-metal hydride battery ( battery pack ) charge , Solar panels and wind turbines Battery charge: Make sure of the battery float voltage and charging current that you need, the input voltage of the module. Adjust the constant voltage potentiometer, adjust the output voltage to about 5V. Use the multimeter in 10A current scale to measure output short-circuit current,and adjust the current potentiometer to make sure the output current to the expected charging current value. Adjust the constant voltage potentiometer make the output voltage reaches the float voltage; Connected to the battery, try to charge. (1,2,3,4 steps to connect the power module input,output no-load does not connect battery.) LED constant current drive: Make sure operating current and Max operating Voltage of the LED you need to drive. Adjust the constant voltage potentiometer, adjust the output voltage to about 5V. Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to make sure the output current to the expected LED operating current. Adjust constant voltage potentiometer make the output voltage reach the maximum LED operating voltage. Connect LED, test. (1,2,3,4 steps to connect the power module input, output No-load does not connect LED.) Package included: 1 x DC-DC buck converter module 8A SHIPPING PAYMENT RETURNS FEEDBACK CONTACT US Your item will be shipped by post from HongKong or China to worldwide. Usually,total price below $30 we will ship your item without tracking number.If you need Registered mail shipping, please add $2.5. Normally your item will be send out within 2 business days after receiving cleared payment. We always send it as a "Gift" and describe cheap value on shipping label. Delivery time depends on postal process and other factors,They can get it as fast as 7 days,but it can take as long as 3-5 weeks in some cases. Here is the estimated time for your reference only: Most of East Asia, Southeast Asia coutries. 7-20 business days. USA,Australia,New Zealand,Canada,Western Europe(France,Spain,UK,Germany,etc.) 7-25 business days. Italy,Russia,Turkey,Ukraine,Eastern Europe,West Asia,Middle East. 14-35 business days,usually take long time.BTW,to Russia,please the receiver name must write your full name as post office required from then on. Brazil,Chile,Argentina,South America,Africa etc. 15-40 business days. Express shipping(DHL/UPS/FedEx/EMS) support,but it should add more than $15 for extra shipping cost,please contact us for the correct price. DHL/UPS/FedEx delivery time usually is 3-7 business days,EMS is 4-10 business days. The shipping time will be longer than usual during the holidays. We Only Accept Paypal on Ebay. For specific requirements, please feel free to contact us. 1. We understand that sometimes an item may not turn out to be just what you need. Refund or replacement request is available within 2 weeks after parcel received & in original condition and packing. 2. Please contact us before returning items and we will provide the shipping address. DO NOT send without communication. Feedback is important to all of us participating on the eBay community. We are always working hard for maintain high standards of excellence and strive for 100% customer satisfaction. So yourPOSITIVE FEEDBACK is very important. Here is an illustration showing how to leave the positive feedback, please follow the following step. Thank you so much. And welcome back to our store again. Pls feel free to contact us from ebay if you have any questions , we will reply you within 48 hours except the weekends and public holidays. We appreciate you can contact with us if you are not satisfied. We will try our best to resolve your problems as fast as possible. DC-DC Module CC CV Boost Converter 11-35V 10A DC-DC Automatic Boost Buck Converter 3-35V to 2.2-30V DC-DC 4.5-60v step down to 1.2-30V 90W Converter DC 4.5-24V to 0.93-20V 2A Buck Converter with Voltmeter DC-DC 2-6V to 3.3-9V 2A USB Output Buck Converter DC-DC 4.5-30V to 0.8-30V 100W Step Down Module DC Boost Converter 100W 3.5V-30V 6A With Voltmeter 1 Channel 5V Relay Module With Optocoupler Engineered for professional eBay sellers!

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Country of Manufacture	China(Mainland)
Output voltage	1.2V-35V( Adjustable)
Input voltage	DC 7V-40V
Output current	8A