* Estimated delivery times start from the date of shipment, excluding processing time.
* Actual delivery times may vary due to holidays, weather conditions, or customs delays.
Skilaðar vörur verða samþykktar innan 40 daga frá móttökudegi. Sérsniðnar vörur geta ekki verið skilaðar eða skipt. Vörur keyptar með raftökugjafakorti eru aðeins skiptanlegar; endurgreiðsla á ekki við.
Ókeypis gjöf
Velkomin á Roymall, faglegu vefsíðunni þinni fyrir gjafir úr vöruhúsi. Við metum og þökkum stuðning þinn og viljum sýna þakklæti með því að bæta við áhugaverðum þætti við kaupin þín. Þegar þú verslar hjá okkur færðu ekki aðeins aðgang að vörum í fyrsta flokki sem bæta lífsgæði þín heldur færðu einnig ókeypis gjöf með hverri pöntun.Tilbúin(n) að kanna safnið okkar og finna fullkomnu gjafirnar þínar? Skoðaðu úrval okkar af vörum úr vöruhúsi, pantaðu og bíððu eftir spennunni af ókeypis gjöfinni þinni sem fylgir kaupunum þínum.
Sendingarstefna
Við munum vinna hörðum höndum við að senda þér vörur eftir að hafa móttaka pöntun þína og tryggja að þær komist heil og hrauskar til þín. Sendingarupplýsingar verða í staðfestingarpóstinum þínum.Í flestum tilfellum eru pantanir afgreiddar innan 2 daga. Undir sérstökum kringumstæðum getur það tekið lengri tíma eins og hér segir: Þegar þú pantar á laugardegi, sunnudegi eða á frídögum, gæti það tekið 2 daga lengri tíma.Venjulega þarf 5-7 virka daga (mánudaga til föstudaga) án þess að flugseinkun eða önnur umhverfisþættir hafi áhrif.Þar sem sendingarþjónusta okkar er alþjóðleg mun sendingartíminn ráðast af staðsetningu þinni, svo það gæti tekið nokkurn tíma og vinsamlegast bíðið þolinmóð ef þú ert í afskekktum svæðum eða löndum.
1. Skilastefna
Við tökum aðeins við vörum sem keyptar eru á roymall.com. Ef þú kaupir af staðbundnum dreifingaraðilum okkar eða öðrum söluaðilum geturðu ekki skilað þeim til okkar.Lokasöluvörur eða ókeypis gjafir eru ekki samþykktar til skila.Til að eiga rétt á skilum verður vara þín að vera ónotuð og í sömu ástandi og þú fékkst hana. Hún verður einnig að vera í upprunalegum umbúðum.Eftir að hafa fengið skilaleiðbeiningar frá okkur, vinsamlegast pakkaðu vörunum sem skila á og skilaðu pakkanum á staðbundnu pósthúsi eða öðrum sendingaraðila. Við munum afgreiða skilaða eða skipta vöru innan 3-5 virkra daga eftir að hún berst til okkar. Endurgreiðsla verður afgreidd og endurgreidd sjálfkrafa á upprunalega greiðslumáta þinn.Engar skil eða skipti eru möguleg ef vara var framleidd sérstaklega, þar á meðal sérstaklega stærð, lit eða prentun.Ef þú þarft meiri hjálp, vinsamlegast hafðu samband við okkur. service@roymall.com eða Whatsapp: +447549870296
2. Endurgreiðslustefna
Þú færð fulla endurgreiðslu eða 100% afslátt í búðina eftir að við höfum móttekið og skoðað skilaða pakkann. Endurgreiðsla verður afgreidd og endurgreidd sjálfkrafa á upprunalega greiðslumáta þinn.Athugaðu að sendingarkostnaður og allar tollgjöld eða gjöld eru ekki endurgreidd. Viðbótar sendingarkostnaður er ekki endurgreiddur þegar pakki hefur verið sendur. Þú berð ábyrgð á að greiða þessi gjöld og við getum ekki veitt undanþágu eða endurgreitt þau, jafnvel þótt pöntunin sé skilað til okkar.Þegar við höfum móttekið og staðfest skilaða vöru þína, sendum við þér tölvupóst til að tilkynna að við höfum móttekið skilaða vöru þína. Við munum einnig tilkynna þér um samþykki eða höfnun á endurgreiðslu þinni.Ef þú átt í vandræðum með endurgreiðsluferlið, vinsamlegast hafðu samband við okkur. service@roymall.com eða Whatsapp: +447549870296
Features:
- Fixed turn lamp current is 0.1 times the current value ( Used to identify whether the battery is fully charged When charging).
- Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED.
- High output current, the max output current can reach 8A.
- Four high frequency capacitance, can lower output ripple, enhance the work stabilization.
- Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good,and won't affect each other.
- Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever.
- 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability.
- Double color lamp, working condition be clear at a glance
- Voltage and current are adjustable,wich effect is good.
- Output Voltage: (1) DC 1.2-28V continuously adjustable. (2) Fixed output:Choose between 0.8v-28v
- Output Current: 8A (when power tube"s temperature exceeds 65 degrees, please add cooling fan)
- Constant Current Range: 0.2-8A (Adjustable)
- Turn Lamp Current: Constant current value * (0.1), turn the lamp current and constant value linkage, such as constant current value is 3A, turn the lamp current is set to a constant current is 0.1 times (0.1 * 3A = 0.3A)
- Output Short Circuit Protection: Yes, constant current
- Input Reverse Polarity Protection: None
- Output Prevent Backflow: None
- Wiring: Terminal
- No-Load Current: Typical 20mA (24V switch 12V)
- Load Regulation: ± 1% (Constant)
- Voltage Regulation: ± 1%
- Dynamic ResponseSpeed: 5% 200uS
- Potentiometer Adjustment Direction: clockwise (increase) , counterclockwise (decrease), the potentiometer(CV) closed to the input voltage is used to regulate voltage, the potentiometer(CC) closed to output voltage is used to regulate current (CC)
- Operating Temperature: Industrial grade (-40 °C to +85 °C) (please note the actual use of the power tube temperature , high temperature heat strengthened)
- Indicator: dual color indicator, charging indicator light is red, the green light means fully charged (No load is green)
- Size: Approx. 65 x 47 x 23.5mm/2.56 x 1.85 x 0.93""
- Precision of Constant Current and Temperature: On the actual test, the module temperature from 25 degrees to 60 degrees, the constant current value change is less than 5% (5A constant current value)
- Output Short Circuit Protection: Yes,Constant current (the current setting constant current value)
I love these supplies. I used them to build a variable DC supply for my bench. I changed the pots for panel mount 10 turn pots and fed these supplies(3) with a high current 24V supply. Most of the parts for this project were source from banggood including the laser to engrave the front panels.
I love these supplies. I used them to build a variable DC supply for my bench. I changed the pots for panel mount 10 turn pots and fed these supplies(3) with a high current 24V supply. Most of the parts for this project were source from banggood including the laser to engrave the front panels.
I love these supplies. I used them to build a variable DC supply for my bench. I changed the pots for panel mount 10 turn pots and fed these supplies(3) with a high current 24V supply. Most of the parts for this project were source from banggood including the laser to engrave the front panels.
Incrivelmente pequeno, mas muito bom! A encomenda chegou sem atrasos e sem problemas, nada danificado e bem embalado. Já testei e fiquei muito contente, coloquei na entrada 22 Volts DC retirados da minha fonte e foi regulando a saída e tirei várias voltagens como podem ver nas fotos. Por isso recomendo, não aqueceu e por fim digo que é um bom regulador de DC para DC. Temos que ter atenção em não ultrapassar a voltagem máxima permitida pelo fabricante.
Obrigado Banggood
Incredibly small but very good! Order arrived without delay and without problems, nothing damaged and well packaged. I have already tested and was very pleased, I put in the entrance 22 Volts DC taken from my source and was regulating the output and took several voltages as you can see in the photos. So I recommend it, it didn't heat up and finally I say it's a good regulator from DC to DC. We must be careful not to exceed the maximum voltage allowed by the manufacturer.
Thank you Banggood
Incredibly small but very good! Order arrived without delay and without problems, nothing damaged and well packaged. I have already tested and was very pleased, I put in the entrance 22 Volts DC taken from my source and was regulating the output and took several voltages as you can see in the photos. So I recommend it, it didn't heat up and finally I say it's a good regulator from DC to DC. We must be careful not to exceed the maximum voltage allowed by the manufacturer.
Tips:For questions about your order, place of delivery, product discount, taxation, delivery time, warranty, shipping, payment, exchange rate, and other questions unrelated to the product, please contact customer service.
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A part of the QA has been auto-translated.
0
Q:
Can I use it to increase the voltage from 12 v to 18 v?
posso utilizzarlo per aumentare la tensione da 12 v a 18 v?
I think no, because this coverter is not designed to made the solar panel to work in its maximum power point (MPP).
Solar panel hasn't an its own voltage, it depends on the point you made it working, with the load you connect to it.
Solar panel can work without problems from open circuit (current is zero) to short circuit (where current is maximum but voltage is zero): in both cases power output is zero because is the product of voltage and current.
Between these two extremes there's a desired point where power output is the maximum, changing continously with solar radiation and temperature, so needing an electronic able to do a tracking.
In simpler battery plants, generally is battery that imposes the voltage, and the solar panel model is chosen accordingly to this voltage to have a MPP close to this voltage: it's not a tracker, but it works.
I think no, because this coverter is not designed to made the solar panel to work in its maximum power point (MPP).
Solar panel hasn't an its own voltage, it depends on the point you made it working, with the load you connect to it.
Solar panel can work without problems from open circuit (current is zero) to short circuit (where current is maximum but voltage is zero): in both cases power output is zero because is the product of voltage and current.
Between these two extremes there's a desired point where power output is the maximum, changing continously with solar radiation and temperature, so needing an electronic able to do a tracking.
In simpler battery plants, generally is battery that imposes the voltage, and the solar panel model is chosen accordingly to this voltage to have a MPP close to this voltage: it's not a tracker, but it works.
Answered by aquarius on 14/12/2020Helpful (0)
0
Q:
I want to bring the LED diode on the outside.
What kind of diode can I use, what features? (the diode has three terminals). Thank you.
I want to bring the LED diode on the outside.
What kind of diode can I use, what features? (the diode has three terminals). Thank you.
si el diodo LED tiene tres termina debe ser de varios colores debes identifica el negativo y los otros dos terminales son positivos . también debes colocar una resistencia teniendo en cuenta la tensión máxima de trabajo ; te sugiero estudies la ley de ohm (no lo coloque sin resistencia porque lo dañarás)
If the LED diode has three ends must be of several colors you must identify the negative and the other two terminals are positive. you must also place a resistance taking into account the maximum working voltage; I suggest you study the law of ohm (do not place it without resistance because you will damage it)
Answered by Manuel Guillermo Herrera Gamero on 11/10/2021Helpful (0)
0
Q:
I buyed one and waiting for it. Can be used also as a booster DC DC converter? I need it for 12V to 24V booster...
I buyed one and waiting for it. Can be used also as a booster DC DC converter? I need it for 12V to 24V booster...
Trimmers on PCB are 10 kOhms. Replacing them for a beanch power supply, I recommend splitting the voltage one into two potentiometers in series: one 10 kOhm for coarse and one 1 kOhm for fine regulation.
Trimmers on PCB are 10 kOhms. Replacing them for a beanch power supply, I recommend splitting the voltage one into two potentiometers in series: one 10 kOhm for coarse and one 1 kOhm for fine regulation.
Answered by aquarius on 02/01/2021Helpful (0)
0
Q:
Kann ich das Gerät an den Hausstrom anschließen welcher 240V hat?
Kann ich das Gerät an den Hausstrom anschließen welcher 240V hat?
I think not. You can't be sure that the 180 Volts equally divide themselves among the modules' inputs (in series), furthermore modules' insulation is low.It is a simple circuit made for standalone operation, and in general commonly used DC-DC converters have input voltages limited to less than 100 Vdc.
I think not. You can't be sure that the 180 Volts equally divide themselves among the modules' inputs (in series), furthermore modules' insulation is low.It is a simple circuit made for standalone operation, and in general commonly used DC-DC converters have input voltages limited to less than 100 Vdc.
Answered by aquarius on 07/10/2020Helpful (0)
0
Q:
hola este circuito me permite amplificar el voltaje de entrada?
hola este circuito me permite amplificar el voltaje de entrada?
The copper-colored screws on the two blue potentiometers can be turned left and right with a screwdriver to adjust the current and voltage.
The copper-colored screws on the two blue potentiometers can be turned left and right with a screwdriver to adjust the current and voltage.
Answered by Bombosity on 19/10/2021Helpful (0)
0
Q:
Hi, I want to step down from a 20 volt Li-ion battery, to 12 volt and shut of when voltage of battery reaches 16 volt. This to protect the battery. I want to use my old 12 voltage tools with a adapter and your product. Can it do that? Yours sincerely Jan
Hi, I want to step down from a 20 volt Li-ion battery, to 12 volt and shut of when voltage of battery reaches 16 volt. This to protect the battery. I want to use my old 12 voltage tools with a adapter and your product. Can it do that? Yours sincerely Jan
Нет,в вашем случае с падением напряжения на аккумуляторе будет проблематично получить стабильные 12вольт, например в моем случае этот продукт использую в связке с 19.5 вольтовым блоком питания от ноута Dell и получаю на выходе 12 вольт для работы моих устройств.
No, in your case with the voltage drop on the battery it will be problematic to get a stable 12V, for example in my case this product is used in conjunction with a 19.5 Volt power supply from the Dell laptop and receive on output 12V to operate my devices.
Answered by BarbacitoLoco on 01/09/2021Helpful (0)
0
Q:
if output is 8A (max) at 24v does it mean it can handle 12V at 16AjQuery111307198401928197584_1622503209362 bc it does not say max input (A)
if output is 8A (max) at 24v does it mean it can handle 12V at 16AjQuery111307198401928197584_1622503209362 bc it does not say max input (A)
- Potentiometer Adjustment Direction: clockwise (increase) , counterclockwise (decrease), the potentiometer(CV) closed to the input voltage is used to regulate voltage, the potentiometer(CC) closed to output voltage is used to regulate current (CC)
- Potentiometer Adjustment Direction: clockwise (increase) , counterclockwise (decrease), the potentiometer(CV) closed to the input voltage is used to regulate voltage, the potentiometer(CC) closed to output voltage is used to regulate current (CC)