Category

DC DC Converter --FAQ

Click: 779    Date: 08/30/2022 4::13::19 PM

Question: Regard as constant voltage and constant current DC-DC ConverterAnswer:    Constant voltage DC-DC ConverterFor example:1.      24vdc-12vdc 10A, 12vdc output is fix, but the current output is automatic adaptive base on the load.2.       If you connect the load not work at 12vdc , the dc converter will be burnB.      Constant Current DC-DC ConverterFor example:1.       24vdc-12vdc 10A , 10A output is fix, but the voltage output is automatic adaptive base on the load.2.       If you connect the load not work at 10A , the dc converter will be burn Question: Isolated & non-isolated DC-DC ConverterAnswer:1.         Isolated DC Converter is no any interference, it is suitable for sophisticated equipment and there is no any ripple2.         Isolated DC Converter with ripple3.         DC –DC Converter we design is non-isolated Question: Step down & Boost & Automatic Step down and Boost DC-DC ConverterAnswer:1.       Step down DC-DC Converter-- Input voltage must be more than 2V/more of output voltageFor example:24Vdc to 12Vdc 10A2.       Boost DC-DC Converter-- Input voltage must be less than 2V/more of output voltageFor example :5Vdc to 12Vdc 10A3.       Automatic Step down and Boost DC-DC Converter--- output voltage between the input voltage rangeFor example: 9-14Vdc to 12Vdc 10AWhen 9VDC Input, it can support output 12V; When 14Vdc input, it can support output 12Vdc also; input voltage between 9-14V constantly beating the same can be stabilized output 12V; Question:  Can you customize USB dc dc converter?Answer:  Yes.Question:  Can you customize multi-output dc dc converter?Answer:For now, because of the Yucoo dc dc converter’s design and it’s capacity, we can make 2-channels as max output. Question: What is the difference between the PCB case type and the Aluminum case type?Answer: Both are waterproof but PCB case type with Lightweight. Question: Can you make the dc dc converter with adjustable output voltage?Answer:  NO.  We can only make it stable output. Question: Can you make the dc dc converter with adjustable output current?Answer: NO. We can only make adjustable output current mode. For example one 0-10A model dc dc converter,  if you connect with right load, all things will goes well.No need to make stable output. Question : Can make Automatic Step up and down voltage dc converter?Answer:Yes.We can customize 12V-12V &24V-24V Automatic Step up and down voltage dc converter Question ：What is the biggest power you can customize for this small size dc converter now?Answer:  The biggest power we can customize for this kind product is not more than 360W. Question ：All of your dc converter is the same appearance?Answer:1.         The material has two different kinds: Aluminium and plastic shell2.         This two materials converter each has three kinds: large size,middle side,small size .different output power has different shellQuestion: Does the dc converter support running in full load?Answer：1.         NO , All of dc converter did not work in full load2.         The Efficiency≤80%3.         For example : Model YK-DD12S2412 --12VDC-24VDC 12A DC Converter , it can support running 240w 7*24hours Question: Does ALL of the dc converter with anti-interference filtration and TVS(1500w) function?Answer :Yes, All of the dc converter with anti-interference filtration and TVS(1500w) function Question: what does the step down and boost dc converter will apply forAnswer:1.         Our products are widely used in automotive, posts and telecommunications, communications, electricity, coal, aerospace, defense, surveillance systems, railway signals, medical equipment, instruments and meters, LED displays, cable TV and other fields. If you can not find a suitable model,2.         our technical engineers will be based on your actual needs, corresponding to the rapid power solutions. I hope that we can become a long-term partners. 

Industrial frequency inverter --FAQ

Click: 844    Date: 08/30/2022 4::06::39 PM

Question1: What is the Industrial frequency inverter characteristic?Answer:l Suitable for different kind of lower environmentl With strong load connecting abilityl Strong stabilityl Output voltage stabilityl With large dimensionl High efficiencyl More dissipation Output without load connectingl With large capacity output Question 2: Does the main input voltage and bypass input voltage can be switch in automatically or not for Industrial frequency inverter?Answer:l Yes, it switch the main input voltage and bypass input voltage in automaticallyl Achieve uninterrupted operating with load Question 3: The user can select the main input voltage for the Industrial frequency inverter?Answer:l Yes, There have 3 option , but buyer should be confirm before purchasel Pure DC Input without AC Bypass , if without ac input , the inverter will stop workingl DC main input and ac bypass. When there have ac and dc input at the same time , dc voltage have priority , when dc voltage cut off , it can switch to ac for input in automaticl Ac main input and dc bypass, When there have ac and dc input at the same time , ac voltage have priority , when ac voltage cut off , it can switch to dc for input in automatic Question4: can it make 3 phase output for Industrial frequency inverterAnswer:l Yes, it canl Buyer should be confirm before purchase Question 5: Does the High frequency inverter with output isolation transformer or not?Answer:l Yesl All High frequency inverter with output isolation transformerQuestion 6: Does the High frequency inverter with LED Display?Answer:l Yes, All High frequency inverter with LED Display and LCD Display for option , buyer should be confirm before purchasel With perfect sound and indicatior alarm functionQuestion7: what is the max capacity can manufacture by YUCOO for High frequency inverter?Answer:l The max can make 40KVAl 1-10KVA High frequency inverter , Can make 48vdc 110vdc 220vdc inputl 15-30KVA High frequency inverter, Can make110vdc 220vdc input onlyl 40KVA High frequency inverter, Can make 220vdc input only Question 8: Does the High frequency inverter with pure sine wave output?Answer:1. Yes pure sine wave output2. It is using pulse width modulation SPWM technology, the output for the stabilized voltage stability, filter out noise, low distortion degree of pure sine wave, waveform distortion less than 3%. Question 9: what does the High frequency inverter start up voltage range and shut down voltage range for 48VDC 110VDC 220VDC input?Answer:l 48VDC InputDC Start up voltage range : 44Vdc～60VdcDC shut down voltage range : 42Vdc～60Vdcl 110VDC InputDC Start up voltage range : 95Vdc～150VdcDC shut down voltage range : 90Vdc～150Vdcl 220VDC InputDC Start up voltage range : 190Vdc～300VdcDC shut down voltage range : 180Vdc～300Vdcl DC Start up voltage range and DC shut down voltage range can be customize according Question 10: what is the efficiency of High frequency inverter when it work in full load?Answer:Full load efficiency ≥99% (Work in city electric)Full load efficiency ≥85% (Work in invert statue)Question 11: what does bypass switch time for High frequency inverter?Answer:l Bypass switch time≤6ms Question 12: What is the advantage & disadvantage of high frequency inverter?Answer:l Advantage: Lower price, higher transfer rate, smaller size and weightl Disadvantage: if you want large capacity, the technology request is high. Question 13: How to choose suitable inverter?Answer:l If your load is resistive loads, such as: bulbs, you can choose a modified wave inverter. But if it is inductive loads and capacitive loads, we recommend using pure sine wave power inverter.l For example: fans, precision instruments, air conditioner, fridge, coffee machine, computer, and so on.Question14: How do I choose the suitable capacity /power of the inverter?Answer:Different types of load demand for power are different. You can view the load power values to determine the size of the power inverter.Notice:l Resistive load: you can choose the same power as the load.l Capacitive loads: according to the load, you can choose 2-5 times power.l Inductive loads: according to the load, you can choose 4-7 times power. Question 15 :Is the output voltage of our inverter stable ?Answer:Absolutely. Our inverter is designed with a good regulator circuit. You can even check it when measuring the true value by a multimeter. Actually the output voltage is quite stable. Here we need make a especial explanation : many customers found it is unstable when using conventional multimeter to measure voltage. We can say the operation is incorrect. Ordinary multimeter can only test pure sine waveform and calculate data Question 16:What should be noticed when installing inverter?Answer:Put the product in a place where is well ventilate,cool, dry and water-proof.Pls do not stress and do not put foreign objects into the inverter.Question 17: All inverters are the transfer type of DC to AC?l Answer:Yesl Inverters are the type of DC to AC.l According to customer’s requirement.The AC output can be made such as 110V/120V/220V/230V/240V/380V.400V/415V Question18:Does you inverter is off-grid or grid tie?Answer:l All of our inverter can customized is off-grid at present.

Power Inverter with Charger--FAQ

Click: 797    Date: 08/30/2022 3::49::00 PM

Question 1: How long is the delivery time?Answer:Normal order will have a 2-7 working days delivery time after confirmed and payment. Question 2: Can it have remote display or RS232?Answer: Yes. Remote display need extra 10USD,RS232 need extra 15USD. Question 3: Does OEM workable for us?Answer:Yes. Please contact the sale person for details. Question 4:What’s the max power of this power inverter with battery charge?Answer:The max customize power of this model is 8000W, peak power can be 16KW. Question 5:Does it suitable for lead acid battery or GEL battery?Answer:Yes. Question 6: How can we guarantee quality?Answer:Quality is our lifeline. Our products are quality -proven with CE, Rohs certificates and always go through rigorous testing before shipment.That is why our customers keep coming back for more. Question7 ：what other services can we provide?Answer:  Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES；  Accepted Payment Currency:USD,EUR,HKD,CNY;  Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;

LCD inverter--FAQ

Click: 465    Date: 08/30/2022 3::43::57 PM

Question 1: How long is the delivery time?Answer:Normal order will have a 2-7 working days delivery time after confirmed and payment. Question 2: Can the output socket be EU plug?Answer: yes. EU / US / AU /Universal & terminal output socket for option.Other plug please contact us. Question 3: Does OEM workable for us?Answer:Yes.Most of our product are accepted to meet your reqirement.Please ask the sale person for details. Question 4:Can we accept sample order?Answer:Yes, of course. Question 5: How can we guarantee quality?Answer: Quality is our lifeline. Our products are quality -proven with CE, Rohs certificates and always go through rigorous testing before shipment.That is why our customers keep coming back for more. Question 6：what other services can we provide?Answer:Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES；Accepted Payment Currency:USD,EUR,HKD,CNY;Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow.

Adjustable DC Power Supply--FAQ

Click: 928    Date: 08/30/2022 3::39::09 PM

Question 1: what does it mean temperature controlAnswer:1.       Temperature control means the fan of cooling fan control by temperature2.       When the internal temperature is high and fan will start rotation, after temperature drop and it will stop working3.       The internal cooling duct is right into left out4.       Please Keep the power supply should be maintained around the convection air flow during operating  Question 2:  how to define the input cableAnswer:1.       Red – Wire cable2.       Blue – Nero cable3.       Green /yellow- group cableQuestion 3: How to avoid damage to the equipment voltage overshootAnswer:1.       Adjust the "V.Adj" potentiometer to minimum first; for insurance purposes, should be the first "A-Adj" pre potentiometer to minimum also2.       Please switch off when you connect the loadNote:If the output voltage value preset to 20% or less, you should check the power overshoot voltage exceeds the allowable range or not in firstlyFor exampleA.  Before connecting load with the adjustable dc power supply , or pre-adjusted output voltage, or to "V-ADJ " and "A-ADJ" pre-all to minimum, the boot process is repeated several times to check whether the RANGE of the output voltage overshootB.  When the confirmation overshoot voltage does not exceed the maximum allowable range then It can Connected load and bootC.  After confirm the start-up and stable then adjust to the refer voltage value you need Question 4> Does all specification of the adjustable dc power supply with the same dimension ?Answer:1.       No , different specification with different dimension and different case2.       1000W 240*68*210 3.5k3.       2000W 253*68*268  4.5kg4.       3000-4000W 300*78*370  8.5kg5.       5000W-10KW 255*176*540 16.5kg6.       For more bigger power , the dimension and weight will base on the output voltage and currentQuestion 5.  When the adjustable will work in constant current and constant voltageAnswer:1.       Constant current  --- When CC indicator ON mean the power supply working under constant current and the current must be the max output and can be adjust but voltage can not adjustable2.       Constant Voltage  ---the voltage with max output and can be adjust but the current can not adjust Question 6.  Does the DC Power Supply support wide range input ?Answer: 1.       No. our dc power supply design did not support wide range input2.       It is support input voltage as belowSingle phase 110VAC+/-15%，Single phase 110VAC+/-20%，Single phase 220VAC+/-15%，Single phase 220VAC+/-20%，3 phase 380VAC+/-15%，3 phase 380VAC+/-20%3 phase 415VAC+/-15%，3 phase 415VAC+/-20%3 phase 450VAC+/-15%，3 phase 450VAC+/-20%Question 7.  Will the adjustable power supply input voltage and price have any relationship ?Answer: 1.       Yes2.       Output power ≤4000W,  we recommend use single phase voltage for input. If the adjustable dc power supply less then 4000w but request 3 phase voltage for input , the price should be add 60.00USD Per unit3.       Output power ≥4000W,  we recommend use 3 phase voltage for input. If the adjustable dc power supply less then 4000w but request Single phase voltage for input , the price should be add 60.00USD Per unit4.       No matter how much power output of adjustable dc power supply , if request input voltage for 110VAC , the price should be add 60.00USD Per unitQuestion 8.  Does the external remote control port can design with DB9 Port ?Answer: 1.       Yes2.       The external remote control port , we have DB9 Port and Terminal connection for option Question 9.  For the external remote control Signal can control the output voltage only ?Answer:1.       No2.       Base on the request of user , our external remote control Signal can control the current and voltage in separate or simultaneously3.       We offer the 0-5vdc or 0-10vdc remote control Signal in usually4.       Other remote control Signal can be customize according to the customer requestQuestion 10.  What is difference between internal and external control signal?Answer:1.       The internal control signals is connected internal potentiometer with corresponding voltage and current signals in main board to adjust and control the output2.       The external control signal is supplied by two external 0-5V analog signal corresponding to the main board voltage and current signals to adjust and control the output Question 11.  How to connection for the remote control terminal/ DB9 Port?Answer:1.       External (0 ~ 5) V analog voltage regulating signal, which common terminal and the negative output terminal is in communication with the interior2.       Use should pay attention to "common ground" of interference and potential matching problems, you should use isolated floating of (0 ~ 5) V analog voltage signal driving source. Question 12. Does the adjustable power supply has fuse protection inside?Answer:1.       Yes2.       When Input current too higher the fuse will blowout but it is not affect the protection for output of over current

12V 24V DC-AC inverter --FAQ

Click: 670    Date: 07/21/2020 3::52::32 PM

Question 1: How to choose suitable inverter?Answer: If your load is resistive loads, such as: bulbs, you can choose a modified wave inverter. But if it is inductive loads and capacitive loads, we recommend using pure sine wave power inverter. For example: fans, precision instruments, air conditioner, fridge, coffee machine, computer, and so on. Question2: How do I choose the suitable capacity /power of the inverter?Answer: Different types of load demand for power are different. You can view the load power values to determine the size of the power inverter.Notice: Resistive load: you can choose the same power as the load. Capacitive loads: according to the load, you can choose 2-5 times power.Inductive loads: according to the load, you can choose 4-7 times power. Question 3:Does the output voltage of our inverter stable ?Answer:Absolutely. Our inverter is designed with a good regulator circuit. You can even check it when measuring the true value by a multimeter. Actually the output voltage is quite stable. Here we need make a especial explanation : many customers found it is unstable when using conventional multimeter to measure voltage. We can say the operation is incorrect. Ordinary multimeter can only test pure sine waveform and calculate data  Question 4:What should be noticed when installing inverter?Answer:Put the product in a place where is well ventilate,cool, dry and water-proof. Pls do not stress and do not put foreign objects into the inverter.