My question is what capacitor and resistor should I use if I wanted to use 36 LEDs? Good afternoon friends.
My name is john, my passion to design an LED star lighting system is very intense but i don't have the complete knowledge yet, that is why i decided to access the internet to acquire more knowledge, in search i found your blog, with what i saw i was amase and as well happy because i know i can get some aid from you.
My question is if my main is 220V, Dear,
Read this article
How to calculate the value of resistor for LED’s (with different types of LED’s circuits)
https://www.electricaltechnology.org/2013/08/how-to-calculate-value-of-resistor-for-LED-circuits.html, What is purpose of inserting the capacitor in series with circuit ……, what is the benefit of this grouping of led's ?
and what is the advantage of this type circuit over a circuit in which we connect all led's in series and a resistor accordingly without capacitor ?
also, what is the purpose of capacitor in first diagram, doesn't it cause over-voltage in the circuit whenever the ac cycle gets reversed ?
also, isn't it dangerous, the capacitor drops the voltage from 220v to approx. Copyright: https://www.electricaltechnology.org/. If you were to use the low voltage method you would need huge power supplies that then link into low voltage drivers, which could get messy with all the wiring. See here if you have questions about your circuit wiring. There is always a maximum current rating for LEDs, and if you go over that specified current, the LED will be driven too hard and degrade at a fast rate until it ultimately fails. AC AD ADAPTER SERIES, Shenzhen Intech Electronic Technology Limited. INDOOR SWITCHING POWER SUPPLY 5V /12V/24V 2. Now they can switch to more efficient lighting in LEDs, while keeping the same dimmers! Most LED drivers are compatible with 0-10V Dimming control devices that are available all over as this has become common practice for LED lighting and was even used for fluorescent dimming before LEDs were around. For a constant voltage LED you could simply hook the battery to the LED and for LEDs needing constant current you could just put a low voltage constant current driver in between the battery and the diodes. So let me do my final check for my art display project in the above example. /1Cycle,Period for 60min,Each axes SAFETY WITHSTAND VOLTAGE I/P-O/P:1.5KVAC,I/P-FG:1.5KVAC,O/P-FG:0.5KVAC ISOLATION RESISTANCE I/P-O/P,I/P-FG,O/P-FG:100M Ohms/500VDC FIT STANDARD SAFETY STANDARD Fit UL1012,TUV EN60950-1, IP67 EMC STANDARD Fit EN55022,EN55024,CLASSA OTHERS DIMENSION 240*69*43mm(L*W*H) WEIGHT 1.33kg NOTE 1. In the rest of this post, however, we will go over why AC LED drivers, or off-line drivers, are beneficial and how they can cut down on the size and cost of your LED system. The power that is output is a constant current, but there is also an output voltage range that the LEDs must operate in. Operate only on AC 230 V. as this is an AC (230V) Operated Circuit. - User Information Legal Enquiry Guide, © 1999-2020 Alibaba.com. Wiring LEDs Correctly: Series & Parallel Circuits Explained! If the power supply is cheaper then it likely doesn’t have the highest efficiency. 2. Step by Step Procedure with Solved Example, Automatic Street Light Control System using LDR & Transistor BC 547, http://www.mensmusclediet.com/male-enhancement/blastxl-natural-male-enhancement-review", https://www.electricaltechnology.org/2013/08/how-to-calculate-value-of-resistor-for-LED-circuits.html, Motor Protection – Types of Faults and Protection Devices. About 7% of these are other pcb & pcba, 1% are other electrical equipment. I've checked out the 'how to calculate' link above but it only discussed calculating for the resistor (great refresher – for DC, but we're dealing with AC (the mains) so you, There !!! A single high power LED like the emitters we offer on 20mm star boards require about 2-4VDC and at least 350mA of current. This allows you to hook a driver right up to line voltage and then adjust the LEDs without flicker and shifting of light. 1688.com Please Note That if you want to make this circuit at home, then read carefully all the instructions. All Rights Reserved. When selecting a constant current LED power supply for your system you must pay attention to a few different specs in order for the driver to work properly, and in turn, your LED system to run at its full brightness and efficiency. If you need dimming, know the system you are using and look for a dimmable LED power supply that works with the dimming system you have in place. Many AC drivers have integrated 0-10V dimming, this is low voltage dimming so wires come from the driver to the dimmer in order to dim the LEDs. Physical size and shape are obviously a factor when choosing a 110V LED driver. AC LED drivers eliminate the need for the added components. So my wattage is 14.75 which is just under the 15 Watts that this driver can handle. How to Find The Suitable Size of Cable & Wire for Electrical Wiring Installation? Going back to my example above, lets say that a friend of mine suggested using low voltage drivers rather than the offline driver I had originally selected for the spot lights around the room. Get Free Android App | Download Electrical Technology App Now! Alibaba.com Site: International - Español - Português - Deutsch - Français - Italiano - हिंदी - Pусский - 한국어 - 日本語 - اللغة العربية - ภาษาไทย - Türk - Nederlands - tiếng Việt - Indonesian - עברית, AliExpress Try to make this Circuit on a General purpose PCB. As we have already touched on, AC drivers for LED lighting really make a difference when setting up commercial and residential systems. Understanding LED Drivers and How To Choose the Right One, 12 Volt LED Light Strips: Powering and Wiring, Your Ultimate Guide on Buying LED Strip Lights. - So say you are running two strings of two Cree XP-E2 LEDs from the example above. I have one question which is already in previous comment but there is not any ans. Perfect LED Retrofit Solution for Landscape Lighting using a 12VAC Transformer, Introducing Phihong: Now Source a World Leader in AC LED Drivers & Switching Power Supplies from LEDSupply, Single Color WiFi & Voice-Activated Control. Considering this option, I take a look at the prices. 25% Off on Electrical Engineering Shirts. In larger systems when you start adding more LEDs into the array, a higher voltage will be required. The new Phihong Triac Dimmable AC driver line we offer, for instance, offers quality dimming with many popular dimmers. 4.5v AC and the resistor limits the current to make it suitable to run the LEDs, how to design a circuit in which which i want different LED'S to glow for different voltages
like given 1V only red led should glow,for 2V only green led should glow,3V only blue led should glow, Hi. Dear NAGA YADAV@
Nice Question… I have updated all the Description…Please refer to the "Common Question about this Circuit" above. Copyright 2019 LEDSupply. A wide variety of 110v ac led circuit options are available to you, such as free samples, paid samples. | Tolerance : includes set up tolerance, line regulation and load regulation. The total cost for the low voltage route is $41.47, an 84% increase in price. Please be careful because your safety is better than everything. We offer an extensive selection of switching power supplies ranging from 3W to 500W. When a transformer is required (when you are going off AC power, not battery) DC drivers and AC drivers have very similar efficiency. So now the trick of finding a driver to take my 110 volts AC and output 1000mA while staying in a range that includes 14.75 volts. All drivers are rated for a certain wattage, in fact, most AC drivers will have this right in their name (3 Watt LED driver, 15 Watt LED driver, etc).
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