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What is constant dimming?
Constant Voltage (and PWM dimming) Constant voltage means that voltage instead of the amperage the LED sees always stays constant. Max Amperage is often limited by resistors so that the LEDs can’t overdraw themselves. Most LED strips work this way.
What is constant current reduction dimming?
The dimming of LED lights is typically accomplished via one of two methods: constant current reduction (CCR), and pulse width modulation (PWM). Constant current reduction, also referred to as analog dimming, is the relatively simple method of controlling the amount of current supplied to the LED(s).
What is analog dimming?
Analogue dimming is usually referred to as 1 – 10v dimming. In this case, a dc voltage is sent to the driver which dims the LEDs in response to the voltage. With digital dimming, the driver receives a digital signal which tells it how to respond. The advantage of digital dimming is that fixtures are addressable.
What does constant current mean on an led?
The name “constant current” is kind of misleading, I prefer “current limited”. You can let the LED pull on the supply as hard as it wants, but it will only ever get 300 mA. If you shut off the LED the supply won’t push harder than its rated voltage to force 300 mA through it.
Can you dim an led with no current?
You can let the LED pull on the supply as hard as it wants, but it will only ever get 300 mA. If you shut off the LED the supply won’t push harder than its rated voltage to force 300 mA through it. With the supply you linked that is 13 V, so it would just output 13 V and no current.
What does constant voltage mean in PWM dimming?
Constant Voltage (and PWM dimming) Constant voltage means that voltage instead of the amperage the LED sees always stays constant. Max Amperage is often limited by resistors so that the LEDs can’t overdraw themselves. Most LED strips work this way.
Can a TRIAC dimmer be used to dim an led?
If you then want to dim that LED, you often get a very “cluncky” setup where you use have to use an AC TRIAC dimmer to send a dimming signal to the Constant Current LED driver which then translates that to constant current dimming. Some drivers can also use a seperate dimming signals.