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세그먼트당 12LED로 구성되는 7세그먼트 디스플레이 전원장치를 추가하여 기존회로에 쉽게 연결할 수 있다.
◆ Specification
power supply : 22-26VDC non-regulated
segment current : static : 40mA, multiplex : 75mA
total current in static mode : max. 400mA
PCB dimensions : 150 x 252mm (5.9" x 9.9")
recommended transformer : 1240120M
Hints
Connecting the 20cm display common anode K2567 with K8009 multi function clock :
Modification on K8009 :
1K pull up resistor at collector of T9 to T16 to +VL
Modification on each (6) K2567 :
1K pull down resistor between cathode D1 to -V
Note: the displays must be set up for multiplex mode.
Do not mount the decimal point transistor T4 on digit 2 and digit 4.
Do not mount resistor R9 on digit 2 and digit 4.
Connection :
Segments are connected at collectors of T9 to T16
T9= segment a
T10= segment b
T15= segment c
T14= segment d
T16= segment e
T11= segment f
T12= segment g
T13= decimal point (*)
* The decimal point LEDs of digit 2 must be connected to digit 3.
* The decimal point LEDs of digit 4 must be connected to digit 5.
Commons are connected at collectors of :
T17= digit 1 (Left)
T18= digit 2
T19= digit 3
T20= digit 4
T21= digit 5
T22= digit 6
Note :
The -V of the digits must be connected to the GND o