As LED technology develops and new solutions appear on industry
nearly every week, it's
Constant Current Regulators getting good difficult to find out
which option is the best for your applications and most
importantly, what features you have to pay focus on during
purchase. Within my previous article at LEDcentre.uk.com about
general top features of LED transformers I mentioned previously
that LEDs require special transformers features.
LEDs are highly understanding of changes in the voltage and current, so if you are dealing with Constant Current Regulators low voltage Leds, wire-wound, stabilized transformers would be the safe solution. Mentionened above previously within the article, the majority of household Leds operating at low voltage require constant voltage drivers for his or her operation. However, recently, with all the increase of high power LED technology, constant current circuit solutions are becoming more frequent. Below, I will give a short description of methods these circuits work, and why it is necessary to concentrate on details in the purchase of the motive force of these applications.
Three components matter in the operation of Leds: voltage, current and heat. LEDs are highly responsive to a modification of all of these, so their regulation is vital for gaining a long lifespan. Current is often considered an exponential function of voltage, therefore a small volume of alternation in voltage can lead to a sizable alternation in the existing. This is exactly why a lot of the LED lights need stabilized constant voltage power. However, current load can also increase with all the increase of warmth. To prevent overloading, LEDs are driven from low voltage DC by way of a current limiting resistor or constant current regulators. Another additional option is the cooling from the LEDs with heat sinks. Not all LEDs are attached to heat sinks though, which is why the limitation on the hours of application is so important. If LEDs are operated over they are supposed to, they overheat, enhancing the current (even if within the range restricted to the resistor), and lose some of their lifespan.
Constant current circuits are especially safe for high power Leds, as they are suited to 24/7 operation. When the LED light is manufactured with constant current circuit, the current is fixed through the stabilized transformer, and it does not generate further heat inside the LED light. By less heat generation, the LED gains an extended lifespan. Also, constant current source keeps the LEDs brightness constant. These constant current lights are, however, not suitable for operation with 12V batteries, since batteries are constant voltage power supplies.
LEDs are highly understanding of changes in the voltage and current, so if you are dealing with Constant Current Regulators low voltage Leds, wire-wound, stabilized transformers would be the safe solution. Mentionened above previously within the article, the majority of household Leds operating at low voltage require constant voltage drivers for his or her operation. However, recently, with all the increase of high power LED technology, constant current circuit solutions are becoming more frequent. Below, I will give a short description of methods these circuits work, and why it is necessary to concentrate on details in the purchase of the motive force of these applications.
Three components matter in the operation of Leds: voltage, current and heat. LEDs are highly responsive to a modification of all of these, so their regulation is vital for gaining a long lifespan. Current is often considered an exponential function of voltage, therefore a small volume of alternation in voltage can lead to a sizable alternation in the existing. This is exactly why a lot of the LED lights need stabilized constant voltage power. However, current load can also increase with all the increase of warmth. To prevent overloading, LEDs are driven from low voltage DC by way of a current limiting resistor or constant current regulators. Another additional option is the cooling from the LEDs with heat sinks. Not all LEDs are attached to heat sinks though, which is why the limitation on the hours of application is so important. If LEDs are operated over they are supposed to, they overheat, enhancing the current (even if within the range restricted to the resistor), and lose some of their lifespan.
Constant current circuits are especially safe for high power Leds, as they are suited to 24/7 operation. When the LED light is manufactured with constant current circuit, the current is fixed through the stabilized transformer, and it does not generate further heat inside the LED light. By less heat generation, the LED gains an extended lifespan. Also, constant current source keeps the LEDs brightness constant. These constant current lights are, however, not suitable for operation with 12V batteries, since batteries are constant voltage power supplies.
