11. Tracking mode
The tracking mode permits to structure a symmetric power supply. For this two ARGOS are
necessary, the unit with negative output acts as master.
Configuration:
-V
+V
Masse
+S
-S -V
+V
-V
+V
+S
-S -V
+V
-V
+V
TB3
1
8
9
15
S1
S1
Master
Slave
R1
Fig. 8
The resistance R1 is calculated using the following formula:
R1=(V
max
/5-1) x 20 kOhm
V
max
is the maximum output voltage in Volt of the master device.
The resistor R1 should be oversized (eg. 2W) with a Tc of
≤
20ppm/°C.
NOTE:
a) In tracking mode the slave ARGOS is to be set in RVP mode. (S1 right, EXTERN not
pushed). However a programming resistor is not connected, consequently RVP programming is
set to zero. Because the output voltage results from the highest programmed value, the tracking
mode affects the total output voltage range.
b) The slave output voltage always results from the one of the master, independently of the
operation mode of the later, except if the current limiting or the OV protection of the slave
ARGOS is activated.
Argos 500
Page
15
von
16
ISSUE
07/05
