Elenco Electronics FG-500K Assembly And Instruction Manual
FUNCTION GENERATOR KIT
MODEL FG-500K
Assembly and Instruction Manual
Elenco®Electronics, Inc.
ight © 2005 b
yr
Cop
t of this book shall be reproduced b
No par
y Elenco
®
Electronics
y an
y means;
, Inc.
ights reser
All r
electronic
ved. Revised 2005 REV-B 753069
, photocopying, or otherwise without written permission from the publisher.
PARTS LIST
If you are a student, and any parts are missing or damaged, please see instructor or bookstore.
If you purchased this kit from a distributor, catalog, etc., please contact Elenco
mail is at the back of this manual) for additional assistance, if needed. DO NOT contact your place of purchase
as they will not be able to help you.
RESISTORS
Qty. Symbol Description Color Code Part #
1 R6 200W 5% ¼W red-black-brown-gold 132000
1 R1 620W 5% ¼W blue-red-brown-gold 136200
1 R5 3.9kW 5% ¼W orange-white-red-gold 143900
1 R7 8.2kW 5% ¼W gray-red-red-gold 148200
1 R8 10kW 5% ¼W brown-black-orange-gold 151000
1 R4 22kW 5% ¼W red-red-orange-gold 152200
1 R9 100kW 5% ¼W brown-black-yellow-gold 161000
1 R2 10kW Potentiometer 192531
1 R3 100kW Potentiometer 192612
CAPACITORS
Qty. Symbol Value Description Part #
1 C6 820pF (821) 10% Discap 228210
1 C5 .01mF (103) 10% Mylar 241017
1 C4 .1mF (104) 10% Mylar 251017
1 C3 1
3 C2, C7, C8 10mF 16V Electrolytic (Lytic) 271015
1 C1 100mF 16V Electrolytic (Lytic) 281044
1 C9 1,000
mF 50V Electrolytic (Lytic) 261047
mF 16V Electrolytic (Lytic) 291044
®
Electronics (address/phone/e-
SEMICONDUCTORS
Qty. Symbol Value Description Part #
1 U1 XR-2206 Integrated Circuit 332206
MISCELLANEOUS
Qty. Description Part #
1 PC Board 511003
2 DPDT Switch PC Mount 541009
1 Switch Rotary 2p6pos 542207
1 Battery Snap 590098
1 Top Panel 614111
3 Knob 622009
1 Jack Ear Phone with Nut 622130
1 Case 623003LP
Spacer 5/8” 624432
2
1 Binding Post Black 625031
3 Nut Binding Post 625031HN
kwasher Binding Post 625031LW
Loc
3
Qty. Description Part #
2 Binding Post Yellow 625034
4 Screw 4-40 x ¼” Phillips 641433
3 Hex Nut 7mm 644101
1 Hex Switch Nut 9mm 644102
2 Flat Washer 8mm x 14mm 645101
1 Flat Washer 9mm 645103
1 16-pin IC Socket 664016
1 Handle 666600
Weather Strip 790007
2”
1.5’ Black Wire 22ga. 814120
1 Solder 9ST4
PARTS IDENTIFICATION
Resistors
Potentiometer
PC Mount
Spacer
Capacitor
s
Switches
Integrated Cir
cuit
Socket
Knob
Binding P
ost
Electrolytic
Scre
w
Mylar
Discap
-1-
Rotary DPDT
y Snap
Batter
Earphone
Jack
IDENTIFYING RESISTOR VALUES
Use the following information as a guide in properly identifying the value of resistors.
Bands
1 2
Multiplier
Tolerance
BAND 1
1st Digit
Color Digit
Black 0
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
Gray 8
White 9
BAND 2
2nd Digit
Color Digit
Black 0
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
Gray 8
White 9
Multiplier
Color Multiplier
Black 1
Brown 10
Red 100
Orange 1,000
Yellow 10,000
Green 100,000
Blue 1,000,000
Silver 0.01
Gold 0.1
Resistance
Tolerance
Color Tolerance
Silver +10%
Gold +
Brown +1%
Red +2%
Orange +3%
Green +.5%
Blue +.25%
Violet +
5%
.1%
IDENTIFYING CAPACITOR VALUES
Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads) or mF (microfarads).
Most capacitors will have their actual value printed on them. Some capacitors may have their value printed in the
wing manner.
follo
Second Digit
First Digit
Multiplier
Tolerance
Multiplier
The above value is 10 x 1,000 = 10,000pF or .01mF
The letter K indicates a tolerance of +
10%
The letter J indicates a tolerance of +5%
For the No.01234589
Multiply By 1 10 100 1k 10k 100k .01 0.1
Note: The letter “R” may be used at times to
signify a decimal point; as in 3R3 = 3.3
INTRODUCTION
Assembly of your FG-500 Function Generator will prove to be an exciting project and give much satisfication and
personal achie
and triangle w
vement. The FG-500 contains a complete function generator capable of producing sine, square
ave forms
. The frequency of this generator can be contiuously varied from 1Hz to 1MHz in 6 steps.
A fine frequency control makes selection of any frequency in between easy. The amplitude of the wave forms
are adjustable from 0 to 3Vpp. This complete function generator system is suitable for experimentation and
applications b
limited n
y the student. The entire function generator is comprised of a single XR-2206 monolithic IC and a
umber of passive circuit components.
SPECIFICATIONS
OUTPUT:
• Waveforms: Sine, Triangle, Square
• Impedance: 600W + 10%.
• Frequency: 1Hz - 1MHz in 6 decade steps with variable ranges.
SINE WAVE:
• Amplitude: 0 - 3Vpp at 9VDC input.
• Distortion: Less than 1% (at 1kHz).
• Flatness: +0.05dB 1Hz - 100kHz.
SQUARE WAVE:
• Amplitude: 8V (no load) at 9VDC input.
• Rise Time: Less than 50ns (at 1kHz).
• Fall Time: Less than 30ns (at 1kHz).
• Symmetry: Less than 5% (at 1kHz).
TRIANGLE WAVE:
• Amplitude: 0 - 3Vpp at 9VDC input.
• Linearity: Less than 1% (up to 100kHz).
POWER REQUIREMENTS:
• Standard 9V Battery or 9V to 18VDC at input.
OPERA
• 0OC TO 50OC.
TING TEMPERATURE:
-2-
CONSTRUCTION
Introduction
The most important factor in assembling your FG-500K Function Generator Kit is good soldering techniques.
Using the proper soldering iron is of prime importance. A small pencil type soldering iron of 25 - 40 watts is
recommended. The tip of the iron must be kept clean at all times and well tinned.
Safety Procedures
• Wear eye protection when soldering.
Locate soldering iron in an area where you do not have to go around it or reach over it.
•
• Do not hold solder in your mouth. Solder contains lead and is a toxic substance. Wash your hands
thoroughly after handling solder.
• Be sure that there is adequate ventilation present.
Assemble Components
In all of the following assembly steps, the components must be installed on the top side of the PC board unless
otherwise indicated. The top legend shows where each component goes. The leads pass through the
corresponding holes in the board and are soldered on the foil side.
Use only rosin core solder of 63/37 alloy.
DO NOT USE ACID CORE SOLDER!
What Good Soldering Looks Like
A good solder connection should be bright, shiny,
smooth, and uniformly flowed over all surfaces.
1. Solder all components from
the copper foil side only.
Push the soldering iron tip
against both the lead and
the circuit board foil.
2. Apply a small amount of
solder to the iron tip. This
allows the heat to leave the
iron and onto the f
Immediately apply solder to
the opposite side of the
connection, away from the
iron. Allow the heated
component and the circuit
oil to melt the solder.
f
Allow the solder to flo
3.
around the connection.
Then, remove the solder
and the iron and let the
connection cool.
solder should have flowed
smoothly and not lump
around the wire lead.
4.
Here is what a good solder
connection looks like.
oil.
The
Component Lead
Foil
Solder
Foil
w
Solder
F
oil
Soldering Iron
Circuit Board
Soldering Iron
Soldering Iron
Types of Poor Soldering Connections
1. Insufficient heat - the
solder will not flow onto the
lead as shown.
2. Insufficient solder - let the
solder flow over the
connection until it is
vered. Use just enough
co
solder to co
connection.
3. Excessive solder - could
make connections that you
did not intend to between
adjacent foil areas or
minals.
ter
4. Solder bridges - occur
when solder runs between
circuit paths and creates a
short circuit. This is usually
caused by using too much
solder. To correct this,
simply dr
iron across the solder
bridge as shown.
ag y
ver the
our solder
ing
Rosin
Soldering iron positioned
incorrectly.
Solder
Component Lead
Solder
Solder
Foil
ing Iron
Dr
Gap
ag
-3-
ASSEMBLE COMPONENTS TO THE PC BOARD
Care must be given to identifying the proper components and in good soldering habits. Refer to the soldering
tips section in this manual before you begin installing the components. Place a check mark in the box after
each step is complete.
C1 - 100mF 16V Electrolytic
(see Figure A)
C2 - 10mF 16V Electrolytic
(see Figure A)
C3 - 1mF 50V Electrolytic
(see Figure A)
C4 - .1mF 10% Mylar (104)
(see Figure B)
C6 - 820pF 10% Discap (821)
C5 - .01mF 10% Mylar (103)
(see Figure B)
J4 - 3” Black Wire 22ga.
J8 - 3” Black Wire 22ga.
J7 - 3” Black Wire 22ga.
(see Figure C)
C9 - 1000mF 16V Electrolytic
(see Figure A)
S3 - Slide Switch DPDT
R7 - 8.2kW 5% ¼W Resistor
(gray-red-red-gold)
R8 - 10kW 5% ¼W Resistor
(brown-black-orange-gold)
R5 - 3.9kW 5% ¼W Resistor
(orange-white-red-gold)
R9 - 100kW 5% ¼W Resistor
(brown-black-yellow-gold)
R1 - 620W 5% ¼W Resistor
(blue-red-brown-gold)
J1 - 4” Black Wire 22ga.
J3 - 2.5” Black Wire 22ga.
(see Figure C)
U1 - 16-pin IC Socket
U1 - XR-2206 IC
(see Figure D)
R6 - 200W 5% ¼W Resistor
(red-black-brown-gold)
S2 - Slide Switch DPDT
R4 - 22kW 5% ¼W Resistor
(red-red-orange-gold)
C7 - 10mF 16V Electrolytic
(see Figure A)
C8 - 10mF 16V Electrolytic
(see Figure A)
J2 - 2.5” Black Wire 22ga.
(see Figure C)
Figure A
Electrolytic capacitors
have polarity. Be sure
to mount them with the
negative (--) lead
(marked on side) in the
correct hole.
( )
ontal to the
Mount the electrolytics hor
PC board.
angles and then insert the leads into the
PC board.
Bend the leads at r
or
iz
(+)
ight
Figure B
Bend the capacitor over before
soldering.
Figure C
o 2.5”, three 3”, and one 4”
Cut tw
wire and str
of both ends of the wires
these wires to the points J1, J2,
J3, J4, J7, and J8.
ip 1/4” of insulation off
. Solder
-4-
Figure D
Insert the IC socket into the PC board
with the notch in the direction shown
on the top legend. Solder the IC
socket into place. Insert the IC into
the socket with the notch in the same
direction as the notch on the socket.
Notch
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