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PASCO PI-9880 Instruction Manual

Dc programmable power supply
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I n s tr u c ti o n M a nu a l
®
012- 12695A
*012-12595*
DC Programmable Power Supply
PI-9880

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Summary of Contents for PASCO PI-9880

  • Page 1 I n s tr u c ti o n M a nu a l ® 012- 12695A *012-12595* DC Programmable Power Supply PI-9880...
  • Page 2 DC P r o gr am m ab l e P ow er S u pp l y 012- 12695A ®...
  • Page 3 Mo d el No . P I- 9 8 80 01 2 - 12 6 95 A ®...

  • Page 4: Table Of Contents

    DC P o we r S u p pl y Ta bl e o f Co nt en t s Contents Introduction ............3 Typical Uses .

  • Page 5: Introduction

    540-102 Introduction The PI-9880 DC Programmable Power Supply sources 0–18 volts (V) at up to 1 ampere (A). You can use the Power Supply as a simple constant-voltage source, or take advantage of its advanced features to output periodic functions and custom programs.

  • Page 6: Typical Uses

    012- 12695A Ty p i c a l Us e s Typical Uses The Programmable Power Supply works well with a variety of electronic circuits, motors, lamps, heaters, and Peltier devices, and the PASCO apparatus listed below. Model Number Name Comments...
  • Page 7 Mo d el No . P I- 9 8 80 S p ec i f ic a t io n s Function 4: Stair Programmable maximum voltage (see page 25) Programmable step voltage: 0.01–18.00 V Programmable minimum voltage Programmable step time: 0.1–999 s Programmable stair direction (ascending or descending) Alternating stair direction option Programmable number of cycles: 1 to 999, or infinite...
  • Page 8 DC P r o gr am m ab l e P ow er S u pp l y 012- 12695A S peci ficati ons Experiment-design Considerations Please note the following properties of the Programmable Power Supply when planning an application: •...

  • Page 9: Tutorial

    Tutorial This tutorial will introduce you to the DC Programmable Power Supply. As you follow the steps, it will be helpful to measure and view the Power Supply’s voltage output. Here are three possible ways to do that: Use a data-acquisition program such as DataStudio with a voltage sensor. The sample waveforms shown in the tutorial were collected in this manner.
  • Page 10 DC P r o gr am m ab l e P ow er S u pp l y T u t o r i a l Function 1: DC Voltage Turn the Function knob to the Constant DC Enter Set Maximum or Edit position ( ).
  • Page 11 Mo d el No . P I- 9 8 80 012- 126955A T u t o r i a l Quickly press and release . The Current LED lights, and the display now shows out- put current in amps. Press a few times to toggle the display between current and volt- age.
  • Page 12 DC P r o gr am m ab l e P ow er S u pp l y T u t o r i a l Turn the Function knob back to Constant DC ). Increase the voltage until the Current LED blinks amber and the display shows OL (for “overload”) to indicate that the max- imum current has been exceeded and the out-...
  • Page 13 Mo d el No . P I- 9 8 80 012- 126955A T u t o r i a l Function #2: Rectangle Wave Turn the Function knob to Rectangle Wave ). The display briefly shows F2, then 0.00 (the rectangle wave’s maximum-voltage setting).
  • Page 14 DC P r o gr am m ab l e P ow er S u pp l y T u t o r i a l Press . The Time LED lights and the dis- play shows the rectangle wave’s period (in seconds).
  • Page 15 Mo d el No . P I- 9 8 80 012- 126955A T u t o r i a l Press (DISPLAY) to display the period. Turn the Coarse knob to set the period to –2.00 s (a negative value). Press (START) to run the function and observe the waveform.
  • Page 16 DC P r o gr am m ab l e P ow er S u pp l y T u t o r i a l Function 4: Stair Turn the Function knob to SET MAX. Set the Power Supply’s voltage limit to 8 V. Turn the Function knob to Stair ( ).
  • Page 17 Mo d el No . P I- 9 8 80 012- 126955A T u t o r i a l Function 7: PLAY (Custom Program) Turn the Function knob to PLAY. The dis- play briefly shows F7, then 100 (for a scale- factor setting of 100%).
  • Page 18 DC P r o gr am m ab l e P ow er S u pp l y T u t o r i a l Press (DISPLAY); the Time LED lights and the display shows the step time (or time interval between points) in seconds.
  • Page 19 Mo d el No . P I- 9 8 80 012- 126955A T u t o r i a l Turn the Coarse knob one detent counter- clockwise to view one of the stored points. Turn the Coarse knob some more (a few rotations) until you see Point #10;...
  • Page 20 DC P r o gr am m ab l e P ow er S u pp l y T u t o r i a l ®...

  • Page 21: Basic Operation

    Mo d el No . P I- 9 8 80 012- 12695A B a s i c O p er a ti o n Basic Operation Connections Connect the included AC Power Adapter to the Power Switch POWER port of the Power Supply and to a power outlet (120–240 VAC, 50–60 Hz).
  • Page 22 DC P r o gr am m ab l e P ow er S u pp l y B a s i c O p er a ti o n Set Voltage Rotate Coarse knob to change the output voltage by 1.0 V per detent; rotate the Fine knob slowly to change the voltage by 0.01 V per detent, or quickly to change the voltage by 0.04 V per detent.
  • Page 23 Mo d el No . P I- 9 8 80 012- 12695A B a s i c O p er a ti o n While the Power Supply is operating in any mode, if the output current goes over the set maximum, the output voltage will drop to zero and the Current LED will flash amber, and the display will show OL.

  • Page 24: Standard Functions (Rectangle, Ramp, And Stair)

    DC P r o gr am m ab l e P ow er S u pp l y S t an d ar d Fu nc t i on s ( Re c ta n gl e , R am p , a nd S ta ir ) Standard Functions (Rectangle, Ramp, and Stair) The Power Supply’s standard functions are simple, repeating patterns of voltage out- put that you can control by adjusting four or five parameters.
  • Page 25 Mo d el No . P I- 9 8 80 01 2 - 12 6 95 A S ta nd a r d F un c ti o ns ( R e c ta ng l e, Ramp Ramp Parameters The Ramp function has four parameters: Maxi- Period mum Voltage, Minimum Voltage, Period, and...
  • Page 26 DC P r o gr am m ab l e P ow er S u pp l y S t an d ar d Fu nc t i on s ( Re c ta n gl e , R am p , a nd S ta ir ) To set the Period, press (DISPLAY).
  • Page 27 Mo d el No . P I- 9 8 80 01 2 - 12 6 95 A S ta nd a r d F un c ti o ns ( R e c ta ng l e, Stair Stair Parameters Maximum The Stair function has five parameters: Maxi- Voltage...
  • Page 28 DC P r o gr am m ab l e P ow er S u pp l y S t an d ar d Fu nc t i on s ( Re c ta n gl e , R am p , a nd S ta ir ) To set the Minimum Voltage, press and hold (SET) until the Voltage LED starts blinking fast.
  • Page 29 Mo d el No . P I- 9 8 80 01 2 - 12 6 95 A S ta nd a r d F un c ti o ns ( R e c ta ng l e, Standard Functions Run Mode To run any of the standard functions, turn the Function knob to (Rectangle Wave),...

  • Page 30: Custom Program

    DC P r o gr am m ab l e P ow er S u pp l y Cu s to m P r o gr a m Custom Program The Power Supply’s custom program is a stored list of up to 99 voltage points. The Power Supply comes pre-loaded with a positive off-set sine wave program.
  • Page 31 Mo d el No . P I- 9 8 80 01 2- 12 69 5 A Cu s to m P r o gr a m Edit Program Edit mode: Use Program Edit mode to delete and insert points in the existing program. •...
  • Page 32 DC P r o gr am m ab l e P ow er S u pp l y Cu s to m P r o gr a m Scale Factor is the percentage of the programed voltages that will be output. If Scale Factor is 100%, then the actual programed voltages are output;...
  • Page 33 Mo d el No . P I- 9 8 80 01 2- 12 69 5 A Cu s to m P r o gr a m played twice in a row, so the total number of points in a full cycle is twice the number of programed points minus two.
  • Page 34 DC P r o gr am m ab l e P ow er S u pp l y Cu s to m P r o gr a m To stop playing the program and return the Power Supply to set-up mode, press and hold (STOP).
  • Page 35 Mo d el No . P I- 9 8 80 01 2- 12 69 5 A Cu s to m P r o gr a m Variable Step Height Settings Graph Type Step Time Auto-repeat Voltage values 0, 3, 5.5, 7.5, 9, 10 The standard step function requires each step to have the same height.
  • Page 36 DC P r o gr am m ab l e P ow er S u pp l y Cu s to m P r o gr a m Exponential Settings Graph Type Step Time Auto-repeat 0.5 s Voltage values 0.00, 0.02, 0.05, 0.09, 0.14, 0.21, 0.31, 0.43, 0.61, 0.84, 1.15, 1.58, 2.15, 2.92, 3.97, 5.38, 7.28, 9.85, 13.32, 18.00 0.6 t...

  • Page 37: Technical Support

    Trademarks PASCO, PASCO scientific, and DataStudio are trademarks or registered trademarks of PASCO scientific, in the United States and/or in other countries. All other brands, products, or service names are or may be trademarks or service marks of, and are used to iden- tify, products or services of, their respective owners.