FUNCTION GENERATOR KIT MODEL FG-500K Assembly and Instruction Manual ELENCO ® Copyright © 2013 by Elenco® Electronics, Inc. All rights reserved. Revised 2013 REV-G No part of this book shall be reproduced by any means; electronic, 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® (address/phone/e-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. r 1 r 1 r 1 r 1 r 1 r 1 r 1 r 1 r 1 Symbol R6 R1 R5 R7 R8 R4 R9 R2 R3 Description 200Ω 5% ¼W 620Ω 5% ¼W 3.9kΩ 5% ¼W 8.
PARTS VERIFICATION Before beginning the assembly process, familiarize yourself with the components and this instruction book. Verify that all of the parts are present. This is best done by checking off the parts in the parts list.
IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors. BAND 1 1st Digit Bands 1 2 Multiplier Tolerance Color Black Brown Red Orange Yellow Green Blue Violet Gray White Digit 0 1 2 3 4 5 6 7 8 9 Multiplier BAND 2 2nd Digit Color Black Brown Red Orange Yellow Green Blue Violet Gray White Resistance Tolerance 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.
CONSTRUCTION ● Turn off iron when not in use or reduce temperature setting when using a soldering station. 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 watts is recommended. The tip of the iron must be kept clean at all times and well-tinned. ● Tips should be cleaned frequently to remove oxidation before it becomes impossible to remove.
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 - 100µF 16V Electrolytic (see Figure A) C2 - 10µF 16V Electrolytic (see Figure A) C3 - 1µF 50V Electrolytic (see Figure A) R9 - 100kΩ 5% ¼W Resistor (brown-black-yellow-gold) C4 - .
ASSEMBLE COMPONENTS TO THE PC BOARD (continued) Figure F R2 - 10kΩ Potentiometer Hex Nut 7mm (see Figures Ea & Eb) Cut off tab S1 - 6 position Rotary switch (see Figure F) Mount down flush with PC board. R3 - 100kΩ Potentiometer (see Figure Ea) Figure G Battery snap (see Figure G) Thread the battery snap wires through the hole in the PC board from the solder side as shown. Solder the red wire to the BT+ point and the black wire to the BT– point on the PC board.
INSTALL COMPONENTS TO FRONT PANEL (continued) r Install the colored binding posts to the panel as shown in Figure I. Use the hardware shown in the figure. Make sure that the small nuts are tight. Nuts Lockwashers Small nut Binding post Black Figure I Yellow Yellow WIRING (See Figure J) r Solder the wire from hole J1 on the PC board to the first yellow binding post as shown. r Solder the wire from hole J2 on the PC board to the second yellow binding post as shown.
FINAL ASSEMBLY r Fit the PC board assembly into the top case, making sure that all switches and pots come through the holes in the panel as shown in Figure K. 7mm Hex pot nuts 9mm Hex switch nut r Place the washers onto their locations as shown in Figure K, being careful to check the sizes. Then, tighten the hex nuts onto the potentiometers and rotary switch, noting their size as shown in Figure K.
FINAL ASSEMBLY (continued) r Remove the backing from each rubber foot and place them in the locations shown in Figure M. 2.8 x 8mm Screws r Assemble the top and bottom case sections and fasten with four 2.8 x 8mm self-tapping screws as shown in Figure M. Make sure the slots on the side line up with one another. Slot r Turn the shafts on the two potentiometers and rotary switch fully counter-clockwise.
3) FREQUENCY CONTROLS In each of the following steps, start with the switch and pots as shown on the previous page. 6 range settings, vary the FREQUENCY pot from max to min and check that the frequency varies according to Table 1 on page 12. 2) OUTPUT WAVEFORMS Connect an oscilloscope probe to the square wave output. You should see about 8V peak to peak square wave of a little over 15Hz. Connect the oscilloscope probe to the sine/triangle wave output.
FUNCTIONAL DESCRIPTION The FG-500 is a function generator integrated circuit capable of producing high quality sine, triangle, and square waves of high stability and accuracy. A picture of each waveform is shown below: Sine Wave Triangle Wave Square Wave THEORY OF OPERATION The heart of the FG-500 Function Generator is the XR-2206 monolithic function generator integrated circuit. The XR-2206 is comprised of four main functional blocks as shown in the functional block diagram (Figure 1).
CONTROLS RANGE SWITCHES Six ranges of frequency are provided by the range switch as shown in Table 1. POSITION 1 2 3 4 5 6 TYPICAL FREQUENCY RANGE 1Hz - 15Hz 10Hz - 150Hz 100Hz - 1.5kHz 1kHz - 15kHz 10kHz - 150kHz 100kHz - 1MHz Table 1 SINE/TRIANGLE SWITCH ON/OFF SWITCH This SINE/TRIANGLE Switch selects the waveform, sine wave or triangle wave, sent to the SINE/TRIANGLE output terminal. The ON/OFF Switch turns the power to the FG-500 on or off.
-13Answers: 1) XR-2206; 2) A Voltage Controlled Oscillator, An Analog Multiplier and Sine Shaper, Unity Gain Buffer Amplifier and A Set of Current Switches; 3) Current; 4) Frequency; 5) 1/RC; 6) RC; 7) output; 8) triangle; 9) sine; 10) 1Hz to 15Hz, 10Hz to 150Hz, 100Hz to 1.5kHz, 1kHz - 15kHz, 10kHz - 150kHz, 100kHz - 1MHz.
EDUCATION KITS Complete with PC Board and Instruction Book Space War Gun 0-15V Power Supply Christmas Tree K-10 K-11 K-14 Rapid fire or single shot with 2 A low-cost way to flashing LEDs. supply voltage to electronic games, etc. Requires 9V battery 0-15VDC @ 300mA 8.5VAC @ 500mA LED Robot Blinker K-17 Produces flashing colored LEDs and three popular Christmas melodies. You’ll have fun displaying the PC board robot. Learn about free-running oscillators.
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