External Led Board; Led Light Engine Connector; Figure 4: Driving External Led Boards; Figure 5: Driving The Dialight Light Engines - NEC 78K0 User Manual

78K0 - Shine It!

2.4 External LED Board

The EV-K0-HCD board can connect and drive commercially available external LED boards. To do so, you
must first remove the jumper wires inserted into the four Tyco receptacle connectors (J1, J2, J3 and J4)
before installing the LED boards. You can then cascade multiple LED boards in one channel as long as
the number of LEDs meets the requirement specified by Formula 2.

2.5 LED Light Engine Connector

The EV-K0-HCD board has four LED light engine connectors (refer to J5, J6, J7 and J8 in the
schematics) to the 4-pin terminal block. The following table describes the function of each pin.
They can be used to drive up to four off-the-shelf LED light engines, for example, the POWERWHITE™
linear light engine modules from Dialight. Before installing the modules, you must first remove the jumper
wires inserted at the four Tyco receptacle connectors (J1, J2, J3 and J4).
The analog inputs (pin 1 & 2) on the connectors are mainly for connecting to off-board thermister on the
light engine module but can be used for any analog inputs, such as potentiometer, light sensors, etc.
Please not that each analog input is biased with a 10kohm resistor (refer to R11, R12, R13 and R14).
Note: There are six LUXEON Rebel high-power LEDs in series in one POWERWHITE light engine
module. Therefore the power supply must be a 24V
(center positive) Jack connector to meet the requirement specified by Formula 2.

Figure 4: Driving External LED Boards

Pin Number Function
1 Analog input
2 Ground
3 LED anode
4 LED cathode

Table 1: LED Light Engine Connectors

Figure 5: Driving the Dialight Light Engines

User's Manual U19610EE3V0UM00
/1.5A with a 2.1mm center pole
DC
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