Power Supplies - Revision history

Bsboggs at 01:57, 13 January 2022

2022-01-13T01:57:33Z

Bsboggs at 18:44, 11 January 2022

2022-01-11T18:44:23Z

Aplstudent: /* Timing mode */

2016-03-04T21:12:27Z

‎Timing mode

Aplstudent: /* Digital Power Supply */

2016-03-04T21:07:57Z

‎Digital Power Supply

Aplstudent: /* Display Modes */

2016-03-04T21:07:43Z

‎Display Modes

Aplstudent: /* Front panel controls */

2016-03-04T21:06:07Z

‎Front panel controls

Aplstudent: /* Operating in Series Mode */

2016-03-04T21:02:01Z

‎Operating in Series Mode

Aplstudent: /* Operating in Series Mode */

2016-03-04T20:58:48Z

‎Operating in Series Mode

Aplstudent: Undo revision 2648 by Aplstudent (talk)

2016-03-04T20:55:43Z

Undo revision 2648 by Aplstudent (talk)

Aplstudent: /* Voltage Supply */

2016-03-04T20:53:54Z

‎Voltage Supply

@@ Line 149: / Line 149: @@
 These power supplies can be operated in a current limited mode in order to protect the load from high currents.  This section will describe how to set a current limit before the power supply has been connected to the load.
-With the supply off and nothing connected to the power supply, turn the current control all the way to the max and the voltage control to the minimum.  Turn on the power.  We want to adjust the adjust the voltage control to the voltage we will be using (or the maximum voltage).  At this point set it to 10V.  Now connect the positive and negative terminal with a thick banana wire.  We can now adjust the current to our desired limit with the current control knob.  Set it to 0.3A.  Unplug the banana wire and turn the voltage all the way down.  Now attach the parallel circuit from the current source section.  Start upping the voltage now that the circuit is connected.
+With the supply off and nothing connected to the power supply, turn the current control all the way to the max and the voltage control to the minimum.  Turn on the power.  We want to adjust the adjust the voltage control to the voltage we will be using (or the maximum voltage).  At this point set it to 10V.  '''Important:''' Turn the current control back to all the way to minimum. Now connect the positive and negative terminal with a thick banana wire.  We can now adjust the current to our desired limit with the current control knob.  Set it to 0.3A.  Unplug the banana wire and turn the voltage all the way down.  Now attach the parallel circuit from the current source section.  Start upping the voltage now that the circuit is connected.
 <ol>
 <li> What happens?  Why is this?</li>

@@ Line 7: / Line 7: @@
 For this module, you will need:
 <ul>
-<li> Rigola DP1308A digital DC Power Supply</li>
+<li> Rigola DP1308A digital DC Power Supply (or similar)</li>
-<li> HY3003D-3 analog DC Power Supply</li>
+<li> HY3003D-3 analog DC Power Supply (or similar)</li>
-<li> 2 Fluke 179 True RMS multimeters</li>
+<li> 2 Fluke 179 True RMS multimeters (or similar)</li>
 <li> An assortment of short wires</li>
-<li> Resistors: 4x100ohm and 1 10kohm</li>
+<li> Resistors: 4x100ohm and 1 10kohm (or close values)</li>
 <li> A breadboard (or protoboard) </li>
 <li> BNC-Banana Plug Adaptor (with male BNC plug)</li>

@@ Line 403: / Line 403: @@
 [[File:timing.jpg|400px|thumb|right|Display for timing when first entered.]]
-With the buttons below the display, you can select which channel you will be modifying.  Select +25V.  The left side of the display that is currently empty will later show the graphs of the voltage and current as a function of time.  The right side is where the values will be set.  There are 5 steps that the timing can do.  For each step you can set the voltage, current and duration of the step.  The left column is used for specialized timing and will not be discussed in this module.  If it needs to be used check the user manual for the power supply.  The arrows can be used to select which value you are setting.  To set a value, the keypad must be used.  Once the value is set, it will automatically step to the next box. Input the follow settings:
+With the buttons below the display, you can select which channel you will be modifying.  Select +25V.  The left side of the display that is currently empty will later show the graphs of the voltage and current as a function of time.  The right side is where the values will be set.  There are 5 steps that the timing can do.  For each step you can set the voltage, current and duration of the step.  The "Left" column is used for specialized timing and will not be discussed in this module.  If it needs to be used check the user manual for the power supply.  The arrows can be used to select which value you are setting.  To set a value, the keypad must be used.  Once the value is set, it will automatically step to the next box. Input the follow settings:
 <ul>
 <li> Step 1- 10V, 6A, 20s</li>

@@ Line 204: / Line 204: @@
 == Digital Power Supply ==
-This section will cover use of the Rigol DP1308A digital DC Power Supply.  First discuss the basic nature of the power supply and then discuss the three operating modes.
+This section will cover use of the Rigol DP1308A digital DC Power Supply.  First discuss the basic nature of the power supply and then discuss the display modes and several operation modes of the power supply.
-=== General Analog Power Supply Information ===
+=== General Digital Power Supply Information ===
 [[File:Digital Power Supply Front.jpg|400px|thumb|right|Front of a Rigol DP1308A digital power supply]]

@@ Line 291: / Line 291: @@
 <li>Is it what you expected?</li>
 </ol>
-Depending on your application, some of the channels will remain fixed, while others can be set on a timer and which one you want to watch is important.  You will note that in general display mode there is only one data line.
+Depending on your application, some of the channels will remain fixed, while others can be set on a timer and which one you want to watch is important.
 Now that you have stepped through the different display settings, you should be able to use the one that is most applicable to your application!

@@ Line 247: / Line 247: @@
 <li> Setting the value directly.</li>
 </ul>
-First, we will use the cursor to set it.  Select Volt to set the voltage.  You will notice a little white box in the lower smaller voltage.  The location of the box can be moved using the left and right arrows on the grey dial to the right of the display.  The value of the box can be shifted up and down using the up and down arrows.  Try setting the voltage to 0.5V and 1A.  Remember that to switch to current, you'll need to select it using the display.
+First, we will use the cursor to set it.  Select Volt below the display to set the voltage.  You will notice a little white box in the lower smaller voltage.  The location of the box can be moved using the left and right arrows on the grey dial to the right of the display.  The value of the box can be shifted up and down using the up and down arrows.  Try setting the voltage to 0.5V and 1A.  Remember that to switch to current, you'll need to select it using the display.
 Now we use the number pad to set the voltage and current.  This is done by typing the value into the keypad, then selecting the units you wish to use.  To select the units, you can either use the grey buttons that were used to adjust previously.  Or using the buttons below the display.  Try setting the voltage back to 6V and current in 5A.
 <ol start="6">
 <li> Do you have to have the current selected to change the current with this method?</li>
-<li> Which method do you perfer to use?</li>
+<li> Which method do you prefer to use?</li>
 </ol>

@@ Line 178: / Line 178: @@
 <li> Measure the voltage from the positive terminal of the master to the negative terminal of the master, what it is?  Does this make sense?</li>
 <li> Measure the voltage from the positive terminal of the master to the positive terminal of the slave, what it is?  Does this make sense?</li>
 <li> Measure the voltage from the positive terminal of the slave to the negative terminal of the slave, what it is?  Does this make sense?</li>
 </ol>
@@ Line 183: / Line 184: @@
 Turn down the voltage to zero.  Now remove the 10kohm resistor from the circuit and replace it with the 4 100 kohm resistors in parallel.  Now make the voltage across the resistors 4 volts (2 volts on each display).  Adjust the slave voltage knob all the way down and back up.  Then do the same with the slave current control.
-<ol start="9">
+<ol start="10">
 <li> What happens when the slave voltage is adjusted?</li>
 <li> What happens when the slave current is adjusted?</li>
@@ Line 189: / Line 190: @@
 </ol>
 The master completely controls the voltage in this mode, so the slave voltage control has been disabled.  The slave current control can still be used to limit the current, but the master still continues to operate.  Make sure the slaves controls are both set to maximum.  Now adjust the master current control.
-<ol start="12">
+<ol start="13">
 <li> What happens when the current control kicks in?</li>
 </ol>

@@ Line 165: / Line 165: @@
 With the power off, connect the negative terminal of the slave to one end of a 10kohm resistor and the positive terminal of the master to the other end of the resistor.  This will connect across both supplies.  Adjust both slave knobs and the master's current control to the maximum value (clockwise) and the master's voltage knob to zero.
 <ol>
-<li> Which mode are we operating in?</li>
+<li> Which supply mode are we operating in (voltage or current)?</li>
 </ol>
 Turn on the power supply.  Start adjusting the master voltage and observe the voltage displays.

@@ Line 95: / Line 95: @@
 [[File:analogps.png|400px|thumb|right|Basic circuit using the analog power supply across a resistor.  The multimeters should be used for ammeter and voltmeter.]]
-To explore this, you will set up a very basic circuit to test the power supply.  Simply put a voltage across a 10kohm resister as shown.  To verify the operation of the power supply, we also want to include a ammeter in the circuit and a voltmeter across the resistor.  Either power supply can be used for this section; the controls work the same for both.
+To explore this, you will set up a very basic circuit to test the power supply.  Simply put a voltage across a 100ohm resister as shown.  To verify the operation of the power supply, we also want to include a ammeter in the circuit and a voltmeter across the resistor.  Either power supply can be used for this section; the controls work the same for both.
 With the power off, turn the current control knob all the way clockwise.  This will allow for the maximal current to by supplied by the power supply.  The voltage control knob should be turned all the way down by turning it all the way counter-clockwise.  Turn on the power supply!  Adjusting the voltage knob will change the voltage output.  The display will show the voltage in Volts.  Set the voltage to 7.5V.
@@ Line 114: / Line 114: @@
 ... turn off the power supply.
 ==== Current Supply ====