How do I protect my LED from High voltage?
A surge protection subassembly that can suppress excessive surges to lower voltage levels is an optimal way to protect the LED luminaire investment. Metal Oxide Varistor (MOV) technology is not only inexpensive but also a highly effective technology for suppressing transients in power supplies.
What happens if you put too much voltage through an LED?
Simply put, too much voltage kills the LED. Therefore, if the voltage deviates more than 10%, the LED bulb is fused off. Subsequently, the electronic parts inside the LED bulb get damaged from the voltage spike.
How many volts can an LED handle?
The maximum voltage applied it a single white LED is about 3.0 volts. Several LEDs in series can match a higher voltage supply, or a resistor (or other current limiting circuit) can be used to limit the current.
Do LEDs need a resistor?
An LED (Light Emitting Diode) emits light when an electric current passes through it. The simplest circuit to power an LED is a voltage source with a resistor and an LED in series. If the voltage source is equal to the voltage drop of the LED, no resistor is required.
Why do LEDs burn out without a resistor?
When hooking up an LED, you are always supposed to use a current-limiting resistor to protect the LED from the full voltage. If you hook the LED up directly to the 5 volts without a resistor, the LED will be over-driven, it will be very bright for a while, and then it will burn out.
How do you wire multiple LED lights?
The most common is to daisy-chain the light fixtures by connecting them to each other and hooking the first one up to the switch. The other way to wire multiple lights to one switch is to connect all of them directly to the switch in a “home run” configuration.
What is a high power led?
High Power LEDs come as bare emitters (as seen in Fig. 1) or mounted to a Metal Core Printed Circuit Board (MCPCB). The boards are insulated and contain conductive tracks for easy circuit connections.
Why do we connect led’s together in series?
We can connect LED’s together in series to increase the number required or to increase the light level when used in displays. As with series resistors, LED’s connected in series all have the same forward current, IF flowing through them as just one.
What happens if the voltage is too high on an led?
If the voltage supplied to the LED is lower than required, very little current runs through the junction, resulting in low light and poor performance. On the other hand, if the voltage is too great, too much current flows to the LED and it can overheat and be severely damaged or fail completely ( thermal runaway ).
What is the construction of a light emitting diode?
The construction of a Light Emitting Diode is very different from that of a normal signal diode. The PN junction of an LED is surrounded by a transparent, hard plastic epoxy resin hemispherical shaped shell or body which protects the LED from both vibration and shock.