LED Driver Constant Current Source

Constant Current Source(s)

  • Alternative name is LED driver CC => Constant Current
  • A Constant Current Source is an operating unit for LED modules or LEDs, especially power LEDs.
  • We offer a variety of universal LED Constant Current Sources, many of them are easily programmable via dipswitch.
  • Function to control via DALI, 1..10V, push button and phase angle control or trailing edge control (Triac, MosFET) are especially popular.
  • There is a right Constant Current Source for everyone.

 

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Show 1 to 9 (of in total 33 products)
LED driver flush-mounted box TCI RD57 9W dimmable
LED driver 9W in flush mounted box.
350mA resp. 700mA const. current and 24V DC resp. 12V DC dimmable.
from 23,33 EURunit price 29,17 EURnet: 24,51 EUR
 
19 % VAT incl. excl. Shipping costs
TCI Driver Micro MD
Small LED driver (7-10W) with leading edge/trailing edge dimming. Available with different output currents (constant current), depending on the version.
from 14,20 EURunit price 18,35 EURnet: 15,42 EUR
 
19 % VAT incl. excl. Shipping costs
LED driver 350mA 15W from TCI

Efficient TCI LED-driver 15W with small dimensions to controll up to 12 Power-LEDs, 350mA constant current

from 12,79 EURunit price 15,99 EURnet: 13,44 EUR
 
19 % VAT incl. excl. Shipping costs
TCI 12W 700mA - LED driver

Efficient LED driver with small dimensions to controll up to 5 Power-LEDs

from 12,79 EURunit price 15,99 EURnet: 13,44 EUR
 
19 % VAT incl. excl. Shipping costs
TCI DC Mini Jolly 1...10 V & PUSH - LED driver

TCI DC Mini Jolly

TCI LED driver 20W, small design, dimmable via 1..10V or "Push-Button"; 350mA to 900mA ; 10V, 12V, 24V.

TCI 123400

from 19,80 EURunit price 24,75 EURnet: 20,80 EUR
 
19 % VAT incl. excl. Shipping costs
LED driver tci Mini Jolly Dali

TCI DALI LED converter MINI JOLLY 20W, constant current: 250, 350, 400, 450, 500, 550, 600, 700mA const ; constant voltage: 24V

from 23,59 EURunit price 29,49 EURnet: 24,78 EUR
 
19 % VAT incl. excl. Shipping costs
DC Mini Jolly LC DALI - constant current source 100mA

Low Current LED Driver DALI

constant current source 100mA to 380mA via Dip-switch

from 23,59 EURunit price 29,49 EURnet: 24,78 EUR
 
19 % VAT incl. excl. Shipping costs
TCI driver Mini MD
Small LED driver (18-21W) with leading edge/trailing edge dimming.
Available with different output currents (constant current), depending on the version
from 17,91 EURunit price 23,15 EURnet: 19,45 EUR
 
19 % VAT incl. excl. Shipping costs
Meanwell PCD25 Powersupplies dimmable

Meanwell PCD25 Series

LED driver dimmable via phase or section control currents of 350mA - 1400mA

from 13,21 EURunit price 14,99 EURnet: 12,60 EUR
 
19 % VAT incl. excl. Shipping costs
Show 1 to 9 (of in total 33 products)

We are often asked by customers:

"Constant Current Source or Constant Voltage Source?"

Until recently, the main orientation aspect was the voltage. 12V or 24V DC voltage and the current depends on the usage. The power supply unit has to be sufficiently powerful. But now, with the LED as illuminant, we do not anymore connect a load that can be run with constant voltage, e.g. from a battery. Small variations in the voltage result in small changes of the current level.

Constant Current Sources due to LED characteristic curveKonstantstromquelle wegen LED-Kennlinie n÷tig

LEDs, on the other hand, behave very differently. Their characteristic curve already registers large changes in current for small changes in voltage.
See sketch on the right.

The operation is even unstable if one manages to keep the voltage constant at e.g. 3.3V and maintain a diode current of approx. 350mA. The characteristic curve constantly changes depending on the operating temperature and alternation and scatters from diode to diode. Secure operation is not possible and thermic destruction can occur even with small fluctuations.

Therefore, Constant Current Sources, or LED Drivers, are used. They send a defined and constant current through the LEDs. The voltage measured on the LED is allowed to fluctuate. This ensures reliable operation of the LEDs.

Usual currents for LEDs:

  • LED from the toolbox: approx. 10mA (mostly realised with a series resistor)
  • Low Power LEDs around 100mA
  • Power LEDs with sufficient cooling started with 350mA and now also work with a current of 1A or more.
  • LED arrays or COB are also popular, these are run with over 1A via Constant Current Sources.

Attention. There are LED illuminants, like GU5.3 (MR16 LED radiator) or LED modules that already have an integrated Constant Current Source. They are run conventionally via constant voltage.

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TCI Maxi Jolly HC DALI TCM - LED driver
Our previous price 63,90 EUR Now only 51,12 EURyou save 20% / 12,78 EURnet: 42,96 EUR
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