1 digit
2 digit
Tolerance
Multiplier
Tolerance
Multiplier
Resistor 4,7k - 10% - E12
Resistor 68,1k - 1% - E96
1 digit
2 digit
3 digit
Tolerance
Multiplier
Tolerance
Multiplier
In the absence of any connection between resistor and PX319 driver, it will operate
with adjusted
250 mA output current (as for 100 Ohm resistor connection).
Below is the table allowing for the selection of resistor barcodes:
8
C
olor
Significant
figures
Multiplier
Tolerance
Temperature
coefficient
None
-
-
20%
Silver
-
x0,01
10%
Gold
-
x0,1
5%
Black
0
x1
-
Brown
1
x10
1%
Red
2
x100
2%
Orange
3
x1000
-
Yellow
4
x10.000
-
Green
5
x100.000
0.50%
Blue
6
x1000.000
0.25%
Purple
7
x10.000.000
0.10%
Grey
8
x100.000.000
-
White
9
x1000.000.000
-
Example of the resistor identification:
Irrelevant
You can connect an external 4K7 thermistor to the driver. As the temperature exceeds 70ºC, the
driver starts to limit output power. Once a 90ºC threshold is exceeded, complete shut off is carried
out.
If no NTC thermistor has been connected:
100% of power available at the output
NTC thermistor short circuit:
0% of power available at the output
6.1.
TEMPERATURE CONTROL
