Pasco SE-8657 MOTOR ACCESSORY Manuel d'utilisateur

© 1996 PASCO scientific $7.50012-06247A8/96MOTOR ACCESSORYInstruction Manual andExperiment Guide for thePASCO scientificModel SE-8657IncludesTeacher&a

6Motor Accessory 012-06247A¨Operation as a DC motorThe Motor Accessory can be used with the VariableGap Magnet to demonstrate the operation of a DCmot

7012-06247A Motor Accessory¨EQUIPMENT NEEDED:• Motor Accessory • multimeter• Variable Gap Magnet • patch cords• low voltage DC power supply, limited t

8Motor Accessory 012-06247A¨➂ Working from above, press the brushholder onto the smooth, enlarged portionof the shaft. Apply increasingly firmpressu

9012-06247A Motor Accessory¨Procedure—Part A➀ Rotate the armature and observe how the segments of the split ring commutator contact thebrushes as the

10Motor Accessory 012-06247A¨wire connected to the +terminal of the powersupplyFigure 4. Determining the Direction of the Magnetic Field of the Coil

11012-06247A Motor Accessory¨b) Both coils surround a single iron core on the armature, and each coil is capable oftemporarily magnetizing the core wh

12Motor Accessory 012-06247A¨above. The painted face of the magnet is its North Pole (north-seeking pole). [You canverify this by hanging the magnet

13012-06247A Motor Accessory¨EQUIPMENT NEEDED OPTIONAL EQUIPMENT• Motor Accessory • Voltage Sensor• Variable Gap Magnet • computer interface• multime

14Motor Accessory 012-06247A¨Surprisingly, the direction of induced current can be determined from the law of conserva-tion of energy. Due simply to

15012-06247A Motor Accessory¨➂ Working from above, press the brush holder onto the smooth, enlarged portion of theshaft. Apply increasingly firm pres

16Motor Accessory 012-06247A¨➅ Adjust the gap of the Variable Gap Magnet so that there is approximately 1 mm of clearancebetween the pole pieces and

17012-06247A Motor Accessory¨(b) Must conventional current enter the coil, or leave the coil, from the upper brush, in orderto make the armature act

18Motor Accessory 012-06247A¨(c) What does the split ring commutator do to explain the difference in results from thosewith the dual slip rings?(d) Wh

19012-06247A Motor Accessory¨EQUIPMENT NEEDED• Motor Accessory • multimeter• Variable Gap Magnet • patch cords• Digital Stroboscope or • power source

20Motor Accessory 012-06247A¨➂ Working from above, press the brush holder onto the smooth, enlarged portion of theshaft. Apply increasingly firm pres

21012-06247A Motor Accessory¨➂ Holding the armature in one hand, follow the wire from the slip ring to the left coil of thearmature and note the direc

22Motor Accessory 012-06247A¨Procedure—Part B➀ Adjust the gap of the Variable Gap Magnet so there is approximately 1 mm of clearancebetween the pole p

23012-06247A Motor Accessory¨a) Does this feel different? How?b) Explain why.➄ Repeat with 15 Hz and 6 volts.a) Does this feel different? How?b) Exp

24Motor Accessory 012-06247A¨armature change when you change the voltage? ➤ Note: with the PASCO 6500 Series Power Amplifier, the motor may stop an

25012-06247A Motor Accessory¨Experiment 4: Operation of the Universal MotorEquipment needed:• Motor Accessory • multimeter• Coils and Cores Set • pat

012-06247A Motor Accessoryi®Table of ContentsSection...

26Motor Accessory 012-06247A¨400400U-shaped base400-turn coil➤ Check to be sure the brush assembly is seated as far down on the shaft as it willgo.➂ O

27012-06247A Motor Accessory¨TTHI ýGNLOMIRANADJUMAOUTPAMPLITPI-9587CDIGITALFUNCTIONWAVEFINP GNEXTERFREQUENCY - HERTZ= DC400400wire to the coil on the

28Motor Accessory 012-06247A¨➇ Turn on the power supply (10 volts DC) for the next step.➤ Do not leave the power connected to the motor for extended

012-06247A Motor Accessory29®wire connected to the +terminal of the powersupplyWhen you wrapyour fingers in thedirection of the flowof the electriccu

Motor Accessory 012-06247A30¨Part B➂ Results of the test should agree with predictions.➃ Clockwise, if the leads are connected exactly as shown in Fig

012-06247A Motor Accessory31¨Part B: DC Generator➀ (a) The voltage and current produced is always in the same direction (direct current) but ispulsa

Motor Accessory 012-06247A32¨TTHI ýGNLOMIRANADJUMAOUTPAMPLITPI-9587CDIGITALFUNCTIONWAVEFINP GNEXTERFREQUENCY - HERTZ= DC400400b) The slip-ring commuta

012-06247A Motor Accessory33¨• You can use this experimental setup to demonstrate a hysteresis synchronous motor by dis-connecting the leads to the br

Motor Accessory 012-06247A34¨Notes

Technical SupportFeedbackIf you have any comments about the product ormanual, please let us know. If you have any sugges-tions on alternate experimen

Motor Accessory 012-06247Aii®Copyright, Warranty and Equipment ReturnPlease—Feel free to duplicate this manualsubject to the copyright restrictions be

1012-06247A Motor Accessory®EquipmentIntroductionThe PASCO SE-8657 Motor Accessory transforms thePASCO EM-8641 Variable Gap Magnet into a motorthat ca

2Motor Accessory 012-06247A®Table2.xlsExperiment OptionsMotor Accessory (SE-8657)Variable Gap Magnet (EM-8641)Coils and Cores Set (SF-8616)Low Voltage

3012-06247A Motor Accessory¨source. This is impractical at frequenciesmuch above 30 Hz, and some students mayrequire assistance even a lower frequenc

4Motor Accessory 012-06247A¨Motor Accessory onto the Variable GapMagnet➀ Be sure you have the flat iron pole pieces placed onthe two neodymium magnet

5012-06247A Motor Accessory¨400400Motor Accessory onto the Coils and CoresSet➀ Begin with the U-shaped core, with the coils andany other parts remove