PASCO SF-9586 User manual

Instruction Sheet
for the PASCO
Model SF-9586
012-02815D
1/95
$1.00
Phone [phone] • FAX [phone] • email: [e-mail]
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
better
teach physics
ways to
© 1994 PASCO scientific
This instruction sheet edited by: Tom Reineking
To Use the Power Supply:
➀Plug the power cord into a well-grounded 107-128 VAC,
60 Hz or 198-242 VAC, 50 Hz outlet. (See label on
rear of unit).
➁Connect the appropriate output terminals of the power
supply to the circuit. (Connecting wires are not pro-
vided with the supply.)
➂Turn the HIGH VOLTAGE ADJUST knob fully
counterclockwise.
➃Flip the ON/OFF switch on the front panel to ON.
The switch will light to show that the power is on.
➄Turn the HIGH VOLTAGE ADJUST knob to obtain
the desired output. The meter will show the voltage
between the 6 KV output terminals.
➤CAUTION!—HIGH VOLTAGE
The power supply uses two 390 KΩresistors
which limit the output current to approximately
3mA. Nevertheless:
* Always work with a partner.
* Wear rubber soled shoes.
* Work with one hand only. Keep the other hand
in your pocket or behind your back.
KILOVOLT POWER SUPPLY
ON
OFF
SF-9586 KILOVOLT POWER SUPPLY
HIGH VOLTAGE ADJUST
6.3 VAC
6 KV
3 KV 3 KV
CAUTION!
HIGH VOLTAGE
kV
Introduction
The PASCO scientific Model SF-9586 Kilovolt Power
Supply provides regulated DC power from 0 to 6 kilo-
volts. The 6 kilovolt output is center tapped, providing
outputs of 0 to +/-3 kilovolts. In addition, a pair of output
jacks provides 6.3 volts of AC power, which is commonly
used as filament power in electron tube experiments.
➤IMPORTANT:
➀The 6.3 VAC output is unregulated. If you are
using it to heat the filament in a vacuum tube, we
recommend that you use a current limiting resistor
(1-2 Ω, variable) in series. Measure the voltage at
the filament and adjust the resistance to get the re-
quired voltage.
➁For an accurate meter reading, always use the
left and right output jacks (6 kV). Use the middle
jack only when your application requires a center-
tapped voltage. (The center tap will be the mid-
point of the output voltage only if equal currents
are drawn from the ±3 kV output jacks.)

2
Kilovolt Power Supply 012-02815D
Equipment Return
Should this product have to be returned to PASCO scien-
tific, for whatever reason, notify PASCO scientific by
letter or phone BEFORE returning the product. Upon
notification, the return authorization and shipping instruc-
tions will be promptly issued.
➤NOTE: NO EQUIPMENT WILL BE
ACCEPTED FOR RETURN WITHOUT
AN AUTHORIZATION.
When returning equipment for repair, the units must be
packed properly. Carriers will not accept responsibility
for damage caused by improper packing.
Address: PASCO scientific
10101 Foothills Blvd.
P.O. Box 619011
Roseville, CA 95678-9011
Phone: [phone]
FAX: [phone]
Limited Warranty
PASCO scientific warrants this 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 workman-
ship. This 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 ship-
ment will not be covered by the warranty.) Shipping
costs for returning the equipment, after repair, will be
paid by PASCO scientific.
Other PASCO Power Supplies
PASCO scientific offers a variety of rugged, reliable
power supplies. From low-voltage, fixed-output supplies
to this 6KV DC supply, all PASCO power supplies are
easy to use, ruggedly built, and short circuit protected for
long life in the student lab. For information, check our
catalog or call toll-free 1-800-772-8700.
Specifications
DC Output:
Voltage: Continuously variable
0 to 6 kV differential (no load)
0 to 3 kV and/or 0 to -3 kV (no load) each side,
relative to center-tap.
Current: 50 µA at 6 kV differential (3 kV each side)
Short-circuit current: approx. 3 mA
Ripple: Less than 1%
Line Regulation: Less than 1% variation in dc out
put voltage for a 10% variation in line voltage.
Grounding: Any one terminal may be grounded.
Short-circuit protection: continuous
AC Output:
Voltage: 6.3 VAC nominal, unregulated
Current: at least 2 A at 6.3 V
Fuse: 630 mA, (115 VAC units)
315 mA, (220/240 VAC units)
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
TO PREVENT THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE COVER ON UNIT. NO USER SERVICE-
ABLE PARTS INSIDE. REFER SERVICING TO QUALI-
FIED SERVICE PERSONNEL.
Thelightningflashwitharrowhead,within
anequilateral triangle,isintendedtoalert
the user of the presence of uninsulated
“dangerous voltage” within the product’s
enclosurethatmaybeofsufficientmagni-
tudetoconstituteariskofelectricshockto
persons.
The exclamation point within an equi-
lateral triangle is intended to alert the
userofthe presenceof importantoper-
ating and maintenance (servicing) in-
structions in the literature accompany-
ing the appliance.

3
012-02815D Kilovolt Power Supply
Parts List
REFERENCE PART RATING
C1,C2,C3,C4,C5,C6,C7,
C8,C9,C11,C12,C13,C14,
C15,C16,C17,C18,C19 1N4007 1000V
C10 1500uF 50V
C20,C28,C30,C36 100uF 40V
C21,C33 0.47uF
C22,C34 10nF 63V
C23,C24,C25,C26,C27,
C29,C31,C32 0.1uF 63V
C35 220nF 63V
C201,C202,C203,
C204,C205,C206 0.22uF 1000V
D1,D2,D3,D4,D5,D6,
D7,D8,D9,D10,D11,
D12,D13,D14,D15,D16
D17,D18 GP02 1000V
D19 2W04M
D20,D21,D201,D202 1N4148
F1 T630/250
J1 777
M1 100ua KF86b
P1A,P1B 10K POT
Q1,Q4 BC557B
Q2,Q6 BD788
Q3,Q5 BD243C
R4,R41 100R
R7,R40 3K3
R8 12K4 1%
R10,R31 22K
R13,R15 47K
R1,R36 2K43 1%
R5,R42 22R 2W
R6,R43 82R
R9,R34 6K8
R11,R29 82K
R12,R14,R47,R48,R49 10K
R16,R19,R24,R28 10M
R17,R26 8K2
R18,R32 1K
R20,R33 75K 1%
R21,R30 4K7
R23 2K2
R27 1M
R2 274R 1%
R22,R39 270R
R3,R37 470R
R25,R50 820R 5W
R35 560R 1%
R38 68K
R44,R45 2K2 SIL
R46 47K NTC
R201,R202,R203,R204,
R205,R206,R207,R208 390K
R209,R211 15M
R210,R212 12M
SW1 C5403FQ
TF1,TF2 14445
TF3 16566
TF4 16567
TR1,TR2,TR201 10K TRIM
TR3,TR5 4K7 TRIM
TR4,TR6 2K2 TRIM
TR7,TR8 47K TRIM
U1,U6 NE555
U2,U4 LM324
U3,U7,U8 LM317
U5 LM317L

4
Kilovolt Power Supply 012-02815D
Layout
Component Layout (1 of 2)

5
012-02815D Kilovolt Power Supply
Component Layout (2 of 2)

6
Kilovolt Power Supply 012-02815D
Schematic
Schematic

7
012-02815D Kilovolt Power Supply
Schematic continued

8
Kilovolt Power Supply 012-02815D
Technical Support
Feed-Back
If you have any comments about this product or this
manual please let us know. If you have any suggestions
on alternate experiments or find a problem in the manual
please tell us. PASCO appreciates any customer feed-back.
Your input helps us evaluate and improve our product.
To Reach PASCO
For Technical Support call us at 1-800-772-8700
(toll-free within the U.S., [phone], or
email: [email protected]
Contacting Technical Support
Before you call the PASCO Technical Support staff it
would be helpful to prepare the following information:
• If your problem is computer/software related, note:
Title and Revision Date of software.
Type of Computer (Make, Model, Speed).
Type of external Cables/Peripherals.
• If your problem is with the PASCO apparatus, note:
Title and Model number (usually listed on the label).
Approximate age of apparatus.
A detailed description of the problem/sequence of
events. (In case you can't call PASCO right away, you
won't lose valuable data.)
If possible, have the apparatus within reach when call-
ing. This makes descriptions of individual parts much
easier.
• If your problem relates to the instruction manual, note:
Part number and Revision (listed by month and year on
the front cover).
Have the manual at hand to discuss your questions.