GRAPHTEC midi LOGGER GL220 - Internal Equivalent Circuit of the Input;Output Circuit

2-8
CHAPTER 2 Checks and Preparation
Internal Equivalent Circuit of the Input/Output Circuit
●
Alarm Output
● Logic/Pulse Input
● Trigger Input
Maximum ratings of the transistor for alarm output
VCEO (Collector-emitter voltage) : 30 V
IC (Collector current) : 0.5 A
PC (Collector dissipation) : 0.2 W
* The maximum ratings must not be exceeded.
Example of external
connection
Required for an
inductive load such
as a relay
Load
DC
(5 to 24V)
+5V
10K
2SC2411K
GND
ALARM
+5V +5V
100 K
68K
220 K
LOGIC/PULSE(n)
GND
Comparator
Comparator
+5V
+5V
100 K Ω
68K Ω
220 K Ω
0.01µF
GND
TRIGGER/
SAMPLE