PASCO ES-9080A Manual de usuario
Instruction Manual
Manual No. 012-07227D
Basic Electrostatics
System
Model No. ES-9080A
Basic Electrostatics System Model No. ES-9080A
2!
Table of Contents
Equipment List........................................................... 3
Introduction .......................................................... 4-5
Equipment Description .............................................. 5-11
Electrometer ...................................................................................................................................5
Electrostatics Voltage Source ........................................................................................................6
Variable Capacitor .........................................................................................................................7
Charge Producers and Proof Plane............................................................................................. 7-8
Proof Plane................................................................................................................................. 8-9
Faraday Ice Pail............................................................................................................................10
Conductive Spheres......................................................................................................................11
Resistor-Capacitor Network Accessory .......................................................................................11
Electrometer Operation and Setup Requirements................12-13
Suggested Demonstrations ........................................14-34
Demonstration 1: Faraday Ice Pail and Charge Production................................................... 14-17
Demonstration 2: Charge Distribution................................................................................... 18-20
Demonstration 3: Capacitance and Dielectrics ...................................................................... 21-29
Demonstration 4: Charging and Discharging Capacitors ...................................................... 30-34
Technical Support......................................................35
Copyright and Warranty Information.................................36
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Model No. ES-9080 Basic Electrostatics System
3
Basic Electrostatics System
Model No. ES-9080
Equipment List
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!!%8/+$%*)3($#%,/-%#9/:,
Included Equipment Replacement
Model Number*
1. Basic Electrometer (1)** ES-9078
2. Electrostatics Voltage Source (1)** ES-9077
3. Basic Variable Capacitor (1)** ES-9079
4. Charge Producers (2) and proof plane (1) ES-9075B
5. Faraday Ice Pail and Shield (1) ES-9042A
6. Conductive Spheres (2) ES-9059B
Additional Equipment Required
Any PASCO data acquisition device (ScienceWorkshop®500, 750 SCSI or
750 USB interface)
CI-6400 or CI-6450 or
CI-7599
Resistor-Capacitor Network ES-9053A
A computer NA
DataStudio®or ScienceWorkshop®software CI-6870C
1
24
3
5
66
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Basic Electrostatics System Model No. ES-9080
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Introduction
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Equipment Description
Electrometer (ES-9078)
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Basic Electrostatics System Model No. ES-9080
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meter display
Zero button, ground
and remove excess
charge
output for
signal interface
mechanical zero
adjust screw
(adjust with
power off)
connect to
earth ground
connect test
lead here
push to turn
ON/OFF
Slide to select
voltage range
(3, 10, 30, 100)
Figure 1: Front Panel Controls of the Electrometer
Figure 2: Electrostatics
Voltag e Source
ground
!
Model No. ES-9080 Basic Electrostatics System
7
Variable Capacitor (ES-9079)
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Charge Producers and Proof Plane (ES-9057A)
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,$E)-6=$%*9)4E$7
Figure 3: Variable
Capacitor
Figure 4: Charge Producers
white
surface
blue
surface
non-conductive neck
conductive
disks
Basic Electrostatics System Model No. ES-9080
8
!
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The Proof Plane
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'(),$7%
Figure 5: Proof Plane
handle
surface
aluminum
(white)
non-conductive neck
(black)
conductive disk
NOTE: The proof
planes can be used to
test for charge polarity
on conductors of any
shape. However, for
accurate readings of
charge density, the con-
ductor surface sam-
pled has to be
considerably larger
than the disk of the
proof plane and have a
relatively large radius
of curvature at the
point of contact.
!
Model No. ES-9080 Basic Electrostatics System
9
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-9$%*9)4E$%0$,#6-C%/,%-9)-%
')4-%/>%-9$%#24>)*$%*),%3$%
0$-$4+6,$07%M9$%E4$)-$4%-9$%
*9)4E$%/,%-9$%'4//>%'(),$D%
-9$%E4$)-$4%-9$%*9)4E$%
0$,#6-C%/,%-9$%#24>)*$%:9$4$%
-9$%'4//>%'(),$%+)0$%*/,-)*-7
b9$,%)%'4//>%'(),$%6#%-/2*9$0%-/%)%*/,02*-6=$%#24>)*$D%-9$%'4//>%'(),$%
3$*/+$#%')4-%/>%-9$%*/,02*-6=$%#24>)*$7%W>%-9$%$>>$*-%/,%-9$%#9)'$%/>%-9$%
#24>)*$%6#%#6E,6>6*),-D%-9$%#)+'(6,E%/>%-9$%*9)4E$%0$,#6-C%:6((%,/-%3$%
)**24)-$7%M9$4$>/4$D%)(:)C#%-/2*9%-9$%'4//>%'(),$%-/%-9$%*/,02*-/4%6,%
#2*9%)%:)C%)#%-/%+6,6+6]$%-9$%06#-/4-6/,%/>%-9$%#9)'$%/>%-9$%#24>)*$7%
X6E24$%K%#9/:#%-9$%4$*/++$,0$0%+$-9/0%>/4%2#6,E%-9$%'4//>%'(),$%-/%
#)+'($%*9)4E$%/,%)%*/,02*-6=$%#'9$4$7
in sampled area
equals charge
""
"
"
"
"
""
"
"
"
"
""
""
"
"
"
"
"
"
"
"
charge in proof plane
area sampled
Figure 6: Conductive Sphere
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
Figure 7: Proper use of a proof plane to
sample charge
charged spheres
Surface of the
proof plane IS
tangent to the
surface of the
conductor.
Surface of the
proof plane IS
NOT tangent to
the surface of
the conductor.
Basic Electrostatics System Model No. ES-9080
10
!
Faraday Ice Pail (ES-9042A)
M9$%?;8@A%X)4)0)C%W*$%?)6(%6#%
#9/:,%6,%X6E24$%T7%A46E6,)((C%
0$#6E,$0%3C%.6*9)$(%X)4)0)CD%6-%
:/4Z#%/,%-9$%'46,*6'($%-9)-%),C%
*9)4E$%'()*$0%6,#60$%)%*/,02*-6,E%
#24>)*$%:6((%6,02*$%),%$F2)(%
*9)4E$%/,%-9$%/2-#60$%/>%-9$%
#24>)*$7%W-%6#%),%$5*$(($,-%'4/02*-%
>/4%#)+'(6,E%*9)4E$#%),0%*9)4E$%
06#-4632-6/,#7%M9$%?;8@A%=$4#6/,%
6((2#-4)-$0%)3/=$%*/,#6#-#%/>%-:/%
:64$%+$#9%*C(6,0$4#D%/,$%6,#60$%
-9$%/-9$4D%+/2,-$0%/,%)%+/(0$0%
'()#-6*%3/--/+7%
M9$%/2-$4%*C(6,0$4%6#%*)(($0%
-9$%#96$(07%W-%'4/=60$#%
*/+'($-$%=6#636(6-C%-/%-9$%
6,#60$%/>%-9$%')6(%),0D%:9$,%
E4/2,0$0D%9$('#%$(6+6,)-$%
#-4)C%*9)4E$#%),0%;@%
>6$(0#7%M9$%6,,$4%*C(6,0$4%6#%
-9$%)*-2)(%')6(7%M9$%')6(%6#%
+/2,-$0%/,%6,#2()-$0%4/0#f%
-9$%')6(%6#%_J%*+%6,%
06)+$-$4%),0%_g%*+%96E97%
b9$,%)%*9)4E$0%/3^$*-%6#%
'()*$0%6,#60$%-9$%%')6(D%32-%:6-9/2-%-/2*96,E%6-D%)%*9)4E$%/>%-9$%#)+$%
+)E,6-20$%6#%6,02*$0%/,%-9$%/2-#60$%/>%-9$%')6(7%S8$$%X6E24$%IU7%;,%
$($*-4/+$-$4%*/,,$*-$0%3$-:$$,%-9$%')6(%),0%-9$%#96$(0%:6((%0$-$*-%)%
'/-$,-6)(%06>>$4$,*$7%M9$%E4$)-$4%-9$%*9)4E$D%-9$%E4$)-$4%-9$%'/-$,-6)(%
06>>$4$,*$7%8/%$=$,%-9/2E9%-9$%$($*-4/+$-$4%:6((%E6=$%4$)06,E#%/>%
=/(-)E$D%6-%6#%'/##63($%-/%2#$%-9/#$%=)(2$#%)#%4$()-6=$%*9)4E$%
+$)#24$+$,-#7
M/%'4$=$,-%#-4)C%*9)4E$#%>4/+%'4/02*6,E%$44/,$/2#%4$#2(-#D%6-%6#%
$5-4$+$(C%6+'/4-),-%-9)-%-9$%X)4)0)C%W*$%?)6(%3$%+/+$,-)46(C%
E4/2,0$0%'46/4%-/%#-)4-6,E%),C%$5'$46+$,-7%M9$%0$+/,#-4)-/4%+2#-%)(#/%
3$%*/,-6,2)((C%E4/2,0$0%:96($%'$4>/4+6,E%),%$5'$46+$,-7
M9$%@9)4E$%?4/02*$4#%)4$%2#$0%)#%*9)4E$0%/3^$*-#%-/%(/:$4%6,-/%-9$%6*$%
')6(7%M9$%?4//>%?(),$#%)4$%2#$0%-/%#)+'($%#24>)*$%*9)4E$%0$,#6-6$#7
Figure 8: Faraday
Ice Pail
shield
pail
insulators
Figure 9: Charge Induction
red lead
black lead
Tabla de contenidos
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