VACS:Projects:Software:LPS:Display

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(Voltage Overview)
(Mode Selection)
Line 63: Line 63:
 
;Supply X: set the focus on the power supply X.
 
;Supply X: set the focus on the power supply X.
  
=== Mode Selection ===
+
=== Single Supply Display ===
 +
This mode displays a single power supply.  It allows to control and view all the details of the power supply.
  
{{LCD|1 +5.503V 250mA|SEL STAT CAL}}
+
{{LCD|+5.503V   250mA|SEL STAT CAL}}
  
<table cellpadding="0" cellspacing="0" style="font-family: courier;">
+
;Left wheel: voltage selection.
<tr>
+
;Right wheel: display selection.
<td>123456789ABCDEF</td>
+
;Valid button: select the active display selection.
</tr>
+
;Supply X: select the active power supply.
<tr>
+
 
<td style="border: 2px solid black;">
+
<table><tr>
  <table cellpadding="0" cellspacing="0" style="font-family: courier; background: #5b904a;">
+
<td>{{LCD|+5.503V &nbsp; 250mA|I-Max &nbsp; &nbsp; 490mA}}</td>
<tr><td>1 +5.503V 250mA</td></tr>
+
<td>{{LCD|+5.503V &nbsp; 250mA|I-Min &nbsp; &nbsp; &nbsp;30mA}}</td>
<tr><td>SEL STAT CAL</td></tr>
+
<td>{{LCD|+5.503V &nbsp; 250mA|I-Mean &nbsp; &nbsp;230mA}}</td>
  </table>
+
<td>{{LCD|+5.503V &nbsp; 250mA|P-Max &nbsp; &nbsp; &nbsp;5.4W}}</td>
</td></tr>
+
 
</table>
 
</table>
  

Revision as of 21:30, 18 October 2006

Contents

Overview

Power Supply Control

  • Voltage
  • Current limitation
  • Supply ON/OFF
  • Ramp up time
  • Calibration voltage
  • Calibration current

Global Control

  • Fan speed

Interface

The LPS interface is composed of a 2x16 LCD display, a set of 5 buttons and 2 selection wheels.

  • Voltage (V)
  • Current (A)
  • Power (W)
  • Max, min, mean current
  • Max, min, mean voltage

Display on 2x16 LCD.

123456789ABCDEF

1 +12.00V 250mA 2 -11.85V 125mA

3 +5.034V 2.34A 4 -3.033V 1.12A

+12.00V -11.85V +5.034V -3.033V

1:12V 3:-12V 2:5.0V 4:-3.0V

rotateur 1 -> Voltage +/- rotateur 2 -> Current +/-

1 +12.00V 250mA

 I-Max   490mA
 I-Min   125mA
 P-Max   2.34W

1 +12.00V 250mA

 I-Limit 800mA

Voltage Overview

The voltage overview gives a quick overview of the different output voltages currently selected for the power supplies.

123456789ABCDEFG
1:12V 3:-12V
2:5.0V 4:-3.0V
123456789ABCDEFG
1:12V 3:OFF
2:OFF 4:-3.0V
Left wheel
voltage selection on the power supply having the focus.
Right wheel
change the display mode.
Next button
enter in single power supply display mode.
Supply X
set the focus on the power supply X.

Single Supply Display

This mode displays a single power supply. It allows to control and view all the details of the power supply.

123456789ABCDEFG
+5.503V   250mA
SEL STAT CAL
Left wheel
voltage selection.
Right wheel
display selection.
Valid button
select the active display selection.
Supply X
select the active power supply.
123456789ABCDEFG
+5.503V   250mA
I-Max     490mA
123456789ABCDEFG
+5.503V   250mA
I-Min      30mA
123456789ABCDEFG
+5.503V   250mA
I-Mean    230mA
123456789ABCDEFG
+5.503V   250mA
P-Max      5.4W

Voltage and Maximum Current Control

This mode allows to select the power supply voltage and the maximum output current.

123456789ABCDEFG
+12.03V   250mA
I-Limit   800mA
123456789ABCDEFG
-10.23V   2.45A
I-Limit   3.50A
Left wheel
voltage selection
Right wheel
current limitation selection
Next button
exit the "Voltage and Max current control"
Supply X
select the power supply for the voltage and current limitation.

Voltage and Current Calibration

Calibration is necessary to increase the precision of the laboratory power supply. It is controlled by the ATmel microcontroller.

  • Voltage calibration is achieved by measuring the power supply voltage with a multimeter and entering the measured value in LPS.
  • Current calibration is achieved by measuring the output current while the output is under some load. The load has no importance.

The display is the following:

123456789ABCDEFG
Calibrate 1
+12.03V 250mA

The left button is used to calibrate the voltage and the right button to calibrate the output current.

Open Source
Electronic projects