PASCO EM-8090 User Manual

Instruction Manual
Hand-Crank
Generator
Model No. EM-8090
Manual No. 012-08330A
Model No. EM-8090
Equipment List........................................................... 3
Introduction ............................................................. 4
Suggested Activities .................................................... 4
Demonstrating the Electrical Path through a Series Circuit ..........................................................4
Demonstrating the Electrical Path through a Parallel Circuit........................................................5
Other Suggested Activities.............................................................................................................5
Schematics: Electrical Pathways....................................... 6
Appendix A: Technical Support ........................................ 7
Appendix B: Copyright and Warranty Information ................... 7
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Model No. EM-8090 Hand-Crank Generator
Hand-Crank Generator
Model No. EM-8090
Equipment List
1
Included Equipment Replacement
Model Number*
1. Generator with cables (1), maximum output: 25 Watts, 12 volts
2. Bag, 5” x 9” (1) (not shown above)
EM-8090
*Use Replacement Model Numbers to expedite replacement orders.
NSS= not sold separately from PASCO scientific
Additional Equipment Recommended (for experiments)
Series/Parallel Circuit Board (with five 12-volt light bulbs) EM-8677
NSS
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Hand-Crank Generator Model No. EM-8090
Introduction
The Hand Crank Generator (EM-8090) consists of a permanent magnet DC motor
Black (-)
lead
and is used for demonstrating how manual work can be applied to energy conversion. The generator plugs into the
Turn ing
handle
EM-8677 Series/Parallel Circuit Board, allowing the demonstration of both series
Generator
Cover
and parallel circuit pathways.
Figure 1: Hand-Crank Generator
As a person cranks the handle on the generator, mechanical energy is transferred to electrical energy in the circuit and lights the bulb filament(s).
Suggested Activities
Equipment required: You will need the Hand-Crank Generator (EM-
8090) and a Series/Parallel Circuit Board (EM-8677) to perform the following suggested activities.
Demonstrating the Electrical Path through a Series Circuit:
1. Connect the black lead to the COMMON port (ground) and the red
lead to the SERIES port of the Series/Parallel Circuit Board (EM-
8677).
Red (+)
lead
WARNING: To avoid the risk of shock or damaging the generator, never connect the Hand-Crank Generator to another power source, disassemble the generator, use the generator in or around water, or try to repair the generator yourself. Always keep the plastic covering over the generator to protect the leads from corrosion, damage, etc. For assistance with a faulty generator, see Technical Support in Appendix A and the Warranty in Appendix B.
2. Close Switch 1 (Move the switch handle down into the metal slot.)
Note: Keep Switch 2 open. Switch 2 is used for demonstrating parallel
circuits.
3. Rotate the Hand Crank Generator in the positive direction (shown
by the arrow on label of the generator) at approximately 1 to 2 revolutions per second. Both bulb filaments on the circuit board will light. (Figure 2 on page 6 shows the electrical pathway.)
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Note: Rotating the handle backwards generates a negative voltage on the red wire.
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Model No. EM-8090 Hand-Crank Generator
Demonstrating the Electrical Path through a Parallel Circuit:
1. Insert the black lead into the COMMON port and the red lead into the
PARALLEL port of the Series/Parallel Circuit Board (EM-8677).
2. With Switches 1 and 2 open, rotate the Hand Crank Generator in the positive direction
(shown by the arrow on the label of the generator) at approximately 1 to 2 revolutions per second. Note what happens.
3. With the leads still connected, close Switch 1 by moving the switch handle down into the
metal slot. Crank the handle. Note what happens.
4. Close both Switch 1 and 2 and crank the handle again. Note what happens. (Figure 3 on
page 6 shows the electrical pathway.)
Other Suggested Activities
a) Plug in two Hand-Crank Generators (using stacked banana plugs) into the EM-8677 Series/Parallel Circuit Board. Have one student rotate the handle of the first generator forwards (according to the direction arrow on the generator label) and a second student rotate the handle of the second generator forwards and note what happens. Then have the first student rotate the handle forwards and the second student rotate the handle backwards and note what happens.
b) Obtain two Hand-Crank Generators and lay them on the table. Connect the Generators to each other (through the openings in the back of the banana plugs). Ask a student to crank the handle of the second generator and note what happens.
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Hand-Crank Generator Model No. EM-8090
Schematics/Electrical Paths
Series Circuit Path
PARALLEL
Switch 2 is
BULB 1
BULB 2
open.
COMMON
Figure 2: Path of current travel through bulbs in a series circuit.
Parallel Circuit Path
Note: If switch 2 is kept open, the current only travels through bulb 1.
Figure 3: Path of current travel through bulbs in a parallel circuit
COMMON
PARALLEL
SWITCH 1
SWITCH 1
SWITCH 2
BULB 1
SWITCH 2
SERIES
BULB 2
SERIES
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Model No. EM-8090 Hand-Crank Generator
Appendix A: Technical Support
For assistance with the EM-8090 Hand Crank Generator or any other PASCO products, contact PASCO as follows:
Address: PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone: (916) 786-3800
FAX: (916) 786-3292
Web: www.pasco.com
Email: techsupp@pasco.com
Appendix B: Copyright and Warranty
Copyright Information
The PASCO scientific 012-08330A Hand Crank Generator Manual is copyrighted and all rights reserved. However, permission is granted to non-profit educational institutions for reproduction of any part of the 012-08330A Hand Crank Generator Manual, providing the reproductions are used only for their laboratories and are not sold for profit. Reproduction under any other circumstances, without the written consent of PASCO scientific, is prohibited.
Limited Warranty
PASCO scientific warrants the product to be free from defects in materials and workmanship for a period of one year from the date of shipment to the customer. PASCO will repair or replace, at its option, any part of the product which is deemed to be defective in material or workmanship. The warranty does not cover damage to the product caused by abuse or improper use. Determination of whether a product failure is the result of a manufacturing defect or improper use by the customer shall be made solely by PASCO scientific. Responsibility for the return of equipment for warranty repair belongs to the customer. Equipment must be properly packed to prevent damage and shipped postage or freight prepaid. (Damage caused by improper packing of the equipment for return shipment will not be covered by the warranty.) Shipping costs for returning the equipment after repair will be paid by PASCO scientific.
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