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Summary of Contents for PASCO Brolight SE-9629
- Page 1 Instruction Manual 012-14265A Electron Charge-to-Mass Ratio Model SE-9629 Brolight Technology Co., Ltd...
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Page 2: Table Of Contents
Table of Contents Equipment List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 Limited Warranty and Limitation of Liability - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2 Safety Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3... -
Page 3: Equipment List
5. Tunable DC (Constant Current) Power Supply, 3.5 A / 6.3 V SE-9622 6. Connecting cable, 850 mm, red EM-9740 Set of 5 7. Connecting cable, 850 mm, black EM-9745 Set of 5 Connecting Cable for PASCO 850 Universal Interface (not shown) UI-5218 Power Cord (not shown) 012-14265A... -
Page 4: Limited Warranty And Limitation Of Liability
Quantity UI-5000 850 Universal Interface UI-5400 PASCO Capstone Software PS-2193 High Current Sensor Limited Warranty and Limitation of Liability This Brolight product is free from defects in material and workmanship for one year from the date of purchase. This warranty does not cover fuses, or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. -
Page 5: Introduction
Electron Ch arg e-to-Mass R a ti o El e c t ri c a l S y m b o l s • Use caution when working with voltages above 30 V AC rms, 42 V peak, or 60 V DC. Such voltages pose a shock hazard. -
Page 6: Background Information
SE-9629 Electron Charge - to - Mass R at io The e/m apparatus also has deflection plates that can be used to demonstrate the effect of an electric field on the electron beam. This can be used as a confirmation of the negative charge of the electron, and also to demonstrate how an oscilloscope works. A unique feature of the e/m tube is that the socket rotates, allowing the electron beam to be oriented at any angle (from ±30 degrees) with respect to the magnetic field from the Helmholtz coils. - Page 7 Electron Ch arg e-to-Mass Ra ti o Ins tal l the e/m T u b e o n t h e P l a t f o r m Install the e/m Tube on the Platform • The e/m tube has a number of pins in its base. The platform has a socket on top that has holes that match the pins on the e/m tube.
- Page 8 SE-9629 Electron Charge - to - Mass R at io Install the Helmholtz Coils on the Platform • Use the screws from the mounting Platform hardware to fasten the two Helmholtz coils onto the platform so that the terminals on the coils face toward the outside.
- Page 9 Electron Ch arg e-to-Mass Rati o Connect Cables and Cords Connect Cables and Cords 110 - 120 V or 220 - 240 V Please make sure that you select the right setting according to your AC voltage level. The product is shipped with the setting on 230 V.
- Page 10 Reconnect the power cord and turn on the instrument. here • If the problem persists, contact PASCO Technical Support for service. Note: Replace the burned fuses with new fuses of the same type. (One spare fuse is included inside the Fuse Cover Tray.)
- Page 11 Output: Output power. • Data Interface: Connect to the analog channels of the PASCO 850 Universal Interface using the included DIN plug - to - DIN Plug Connecting Cables (UI-5218). Tunable DC (Constant Current) Power Supply, 3.5 A / 6.3 VI...
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Page 12: Experiment Procedure
SE-9629 Electron Charge - to - Mass R at io • Current Adjust: Sets the current through the Helmholtz coils. • Output: Output power. • Current Display Window: Displays the current through the Helmholtz coils. Experiment Procedure Adjust Operating Voltages and Current Note: Before switching on the power, be sure that all voltage and current controls are turned fully counterclockwise. - Page 13 R ecord Data: Alternate Method Record Data: Alternate Method • Alternatively, the PASCO 850 Universal Interface (UI-5000) can be used with the High Current Sensor (PS-2193) and the PASCO Capstone Software (UI-5400) to measure and record the voltage and current. Table 1.1: Data...
- Page 14 SE-9629 Electron Charge - to - Mass R at io Setup the equipment as described above for measuring e/m except do not supply current to the Helmholtz coils. Apply 6.3 V AC to the “Filament” terminals and 120-200 V DC to the terminals of the “Accelerating Voltage”. Wait sev- eral minutes to warm up the cathode.
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Page 15: Appendix A: General Specifications
Electron Ch arg e-to-Mass Ratio A ppendix A: General Specifications Appendix A: General Specifications Item Description Supply voltage: 110 – 120 V or 220 – 240 V Supply voltage fluctuations: ±10% Fuse protection for inputs: 250 V T 315 mA / 2A Display: 3-1/2 digit display Using site:... -
Page 16: Appendix B: Teacher's Notes
SE-9629 Electron Charge - to - Mass R at io Appendix B: Teacher’s Notes Sample Data Manual Measurements Table 1: Measuring and Calculating e/m Item U (V) IH (A) r (mm) e/m (C/kg) Percent Error 45.0 1.80 42.5 1.76 -0.3 40.0 1.74 -0.9... -
Page 17: Appendix C: Technical Support
Copyright Notice The PASCO scientific manual is copyrighted and all rights reserved. However, permission is granted to non-profit educational institutions for reproduction of any part of the providing the reproductions are used only for their laboratories and are not sold for profit.
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