Heathkit-IG-18-Manual-2 电路图 维修手册.pdf

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1、PRICE $2.00 :IIEAT:IIKIT A.SSElM:BLY lM:A.Nt.T.A.L SINE-SQUARE AUDIO GENERATOR Copyright Q 1968 Heoth Compony A/I.,ff,:. ,J MODEL IG18 595-1179-05 RadioFans.CN 收音机爱 好者资料库 Assembly and Operation of the SINE-SQUARE AUDIO GENERATOR MODEL 16-18 HEATH COMPANY BENTON HARBOR, MICHiGAN 49022 RadioFans.CN 收音

2、机爱 好者资料库 Page 2 TABLE OF CONTENTS INTRODUC TION. UNPACKING WAVE GENERATOR Parts List I- Step-By-Step Assembly Circuit Board Mounting. Circuit Board Assembly. POWER SUPPLY Parts Ltst. . . . . . . Step-By-Step Assembly Circuit Board Mounting And Assembly. SWITCH PRE WIRING Parts List. . . . . . . * ,.

3、 * ,. Step-By-Step Assembly Multiplier SWitch. Tens Frequency Switch. Units Frequency Switch. Square Wave Amplitude Switch. Sine Wave Amplitude Switch CHASSIS ASSE MBL Y . . Parts List. . . . . . . . Step-By-Step Assembly Front And Rear Panel Subassemblies. Unit Assembly. Top Chassis Wiring. Bottom

4、Chassis Wiring. 120-240 VAC Wiring Alternative. Knob Installation. Test Lead Assembly TESTS AND ADJUSTMENTS Tests. . . . . . . . . . Adjustments. FINAL ASSEMBLY OPERATION APPLICATIONS. til . . IN CASE OF DIFFICULTY. . . . Troubleshooting Chart. Factory Repair Service. SPECIFICA TIONS. CIRCUIT DESCRI

5、PTION Sine Wave Generator Square Wave Generator Power Supply CIRCUIT BOARD X-RAY VIEWS. CHASSIS PHOTOGRAPHS. REPLACEMENT PARTS PRICE LIST SCHE MA TIC. (fold-out from page). . . . . 3 4 5 6 7 11 12 15 16 17 18 19 37 39 41 45 47 50 57 58 59 60 63 65 65 67 69 71 75 RadioFans.CN 收音机爱 好者资料库 INTRODUCTION

6、The Heathkit Model IG-18 Sine-Square Audio Generator has been designed for laboratory use as well as for service and testing. Sine wave signals are available between 1 Hz and 100 kHz. Low distortion (less than .1%) sine wave signals are available from 10 Hz to 100 kHz. The output is stepped from .00

7、3 volt to 10 volts. These high quality sine wave signals make it ideal for such applications as testing audio amplifiers for gain and frequency response, as a signal source for harmonic distortion measurements, or as ap external modulator for an RF signal generator. Square wave signals with a rise t

8、ime of 50 nanoseconds are available from 5 Hz to 100 kHz at output levels up to 10 volts. These clean square wave signals can be used for checking frequency response in audio equipment, or as a trigger for testing digital instruments. HElATHKIT The sine and square wave frequencies are identical and

9、thc level of each is independently adjustable. Both signals may be used either simultaneously or independently. The sine wave output will operate into high impedance loads (10 kn or higher) in all output ranges, or it will opcrate into 600 ohm loads in ranges up to 1 volt. The square wave output is

10、designed to operate into loads of 2000 ohms or greater. Other features include: A panel meter for monitoring the sine wave output; repeatable selection of any frequency; switch-selected 600 ohm internal load; and all solidstate circuitry for maximum reliability. All of these features combine to prov

11、ide you with a versatile, accurate, and attractive signal source. It will be a valuable and useful addition to your laboratory or workbench. 3 UNPACKING This kit is packed in a large shipping carton, which contains smaller packages and a number of loose parts. Some of the smaller packages have numbe

12、rs 1 through 3 stamped on them (Pack #1, Pack #2, Pack #3). After these three numbered packages have been removed from the large carton, the remaining parts in the carton will make up package #4. Each assembly section of the Manual contains its own Parts List and Step-By-Step instructions. At the be

13、ginning of each Parts List you will be told which numbered package to open. You will also be directed to remove the parts from package #4 that are required to complete that assembly section. 4 To avoid parts at the Any tools, wiring, sembly procedures. To order replacement parts, do not open an; dir

14、ected to do Sl the Parts Lists in an individua wml:.er on it, should b it is identifiel Price List and use the Parts Order kit. th HEATHK WAVE GENERATOR PART PARTS No. Per Kit RESISTORS 1/2 Watt (1)1-54 2 1-66 2 1-97 3 1-98 2 1-89 2 1-16 2 1-20 6 1-47 1 1-29 1 1 Watt (2)1-56-1 1 CAPACITORS (3)20-128

15、 1 PARTS LIST Open package #1 and check each part against the following Parts List. The numbers in parentheses correspond to the numbers on the Wave Generator Parts Pictorial (fold-out from Page 5). DESCRIPTION PART PARTS DESCRIPTION No. Per Kit Diocles-Transistors (contd.l (9)417 -94 3 2N3416 trans

16、istor 417 -201 2 X29A829 transistor 15 n (brown-green-black) (10)417-154 3 2N2369 transistor 150 n (brown-green-brown) 1100 n (brown-brown-red) HARDWARE 1600 n (brown-blue-red) 2400 n (red-yellow-red) (11)250-89 4700 n (yellow-violet-red) (12)254-1 10 kn (brown-black-orange)(13)259-1 56 kn (green-bl

17、ue-orange)(14)252-3 220 kn (red-red-yellow) (15)250-175 1200 n (brown-red-red) (16)254-7 (17)252-51 8 7 1 8 1 2 1 MISCELLANEOUS (18)260-24 1 (19) 412-66 1 6-32 X 3/81! screw #6 lockwasher #6 solder lug 6-32 nut 2-56 x 3/81! screw #3 lockwasher 2-56 nut Lamp clip Lamp (4) 21-16 1 (5)25-200 1 470 pF r

18、esin .01 fJ.F disc .68 fJ. F electrolytic 85-257-2 1 Wave generator circuit board Solder CONTROLS (6)10-155 10-201 2 2 750 n 10 kn DIODES-TRANSISTORS (7) 56-26 2 Crystal diode (8) 56-56 1 Silicon diode 57-65 2 Silicon diode HEATHKIT PARTS FROM -PACKAGE #4 (20)200-516 597-308 597-260 391-34 490-5 1 1

19、 1 1 1 1 Chassis Kit Builders Guide Parts Order Form Identification label Nut starter Manual (See front cover for part number.) 5 page 5b WAVE GENERATOR PARTS PICTORIAL Page 6 STEP-BYSTEP ASSEMBLY CIRCUIT BOARD MOUNTING ( ) Position the chassiS in front of you as it is shown in Pictorial 1. NOTE: A

20、plastic nut starter is supplied with this kit. Use this nut starter to hold and start 6-32 #6 and 2-56 nuts on screws. Refer to Page 3 of the Kit Builders Guide for further information. ( ) Refer to Detail 1A and fasten the wave generator circuit board to the chassis. Use eight 6-32 x 3/8 screws, se

21、ven #6 lockwashers, one #6 solder lug, and eight 6-32 nuts. Note the position of the solder lug. NOTE: Due to its size, only one-hali of the circuit board is shown in each of the next four Pictorials. A small drawing at the top of each Pictorial shows the area of the circuit board to be assembled. P

22、roceed to the Circuit Board Assembly section. 0 e 6 + :CJ: + iI:B QD I I Detail 1 A e I CJ09 DO 0(:-80-=-P-E P- e 0$8 .OlCt?SO e 6 , 00 Qo OO 0 o + G POWER SUPPLY+ 0 11$0 u aqooo CIRCUiT BOARD e WAVE GENERATOR (0 CIRCUIT BOARD e PICTORIAL 1 y) CIRCUIT BOARD ASSEMBLY IDENTIFICA TION DRAWING START The

23、 steps on this Page this area of the circuit board . FOR GOOD SOLDERED CONNECTIONS, YOU MUST _ ! KEEP THE SOLDERING .-/, ; IRON TiP CLEAN.,. , / Ij WIPE IT OFTEN WITH A DAMP SPONGE OR CLOTH. 1600 n (brown-blue-red), 1200 n (brown-red-red) 1 watt.I-+ 150 n (brown-green-brown), . ) 10 Kn (brown-black-

24、orange), 10 Kn (brown-black-orange). Prepare this combination before in- stalling it on the circuit board: 10 K (brown-black-orange) silicon diode (#56-56). CD t;/ l,f:) ? WRAP DIODE LEADS- ;(/ J I J CUT EXCESS () DIODE LEADS CD / )fg SOLDER ( ) Install this combination so that the banded end of the

25、 diode matches the markings on the circuit board. ( ) Solder all the leads to the foil and cut off the excess lead lengths, PICTORIAL 2 Page 7 CONTINUE Q (brown-blue-red). (red-yellow-red), and cut lengths, lead NOTE: Before mounting lamp clip, bend its sides out permit the screw head to pass by the

26、 ridges in the clip, and to prevent lamp breakage from too much spring ten- sion. Mount the lamp clip with the #2 hardware, W 2-56 x 3/8 SCREW /iPli;i:; ell P ,:.:.:,:.:J.:# 3 L 0 C K WAS HER :.?:8:);: #3 LOCKWASHER 2-56 NUT ( ) Slide the lamp into the clip from one end of the clip. NOTE: Make certa

27、in the lamp leads are not crossed or touching each other, ( ) Insert the leads through the in- dicated holes on the circuit board, ( ) Solder both leads to the foil and cut off the excess lead lengths. PROCEED TO PICTORIAL 3, SWITCH PREWIRING PARTS PICTORIAL BLK (2) . GR OR , ,. BRN -_: CD r -.,. -.

28、,I OR =CI J- Page 8 START .,. 15 Q (brown-green-black), 15 Q (brown-green-black). 10 kQ (brown-black-orange). 10 kQ (brown-black-orange). 4700 Q (yellow-violet-red), 56 kQ (green-blue-orange), ( ) ,68 IJ-F electrolytic capacitor. NOTE: Position the positive (+) lead as shown. MAY BE MARKED WITH POSI

29、TIVE SIGN (+) OR COLOR DOT ( ) Solder all the leads to the foil and cut off the excess lead lengths, IDENTIFICATION DRAWING PART NUMBER The steps on this page are done in this area of the cir- cuit board, PICTORIAL 3 CONTINUE o NOTE: When installing diodes, the cathode end must be positioned as show

30、n on the circuit board, The cathode end is marked either a color end, color dot. band or a symbol. CO LO R COLOR 001 )!fr SYM (CATHO END COLO BAND ) Silicon diode (#57-65) Silicon diode (#57-65) 150 Q (brown-green-brownl. 10 kQ (brown-black-orange), 220 kQ (red-red-yellow). 1100 Q (brown-brawn-red),

31、 1100 Q (brown-brown-red). 1100 Q (brown-brown-red). Solder all the leads to and cut off the excess lengths. PROCEED TO PICTORIAL START ( ),01 fl F disc capacitor. Turn the chassis over and connect the capacitor lead closest to the edge of the circuit board to the #6 solder lug (S-I). Also, solder e

32、ach lead to its foil, Cut off ex- cess leads, NOTE: When installing diodes, be sure to position the cathode end as shown. The cathode end is the banded end. COLOR ;jY CATHODE END ( ) IN191 crystal diode (brown- white-brown) at D3. Note the position of the banded end. ( ) IN191 crystal diode (brown-

33、white-brown) at D4. Note the position of the banded end. Solder all leads to the foil and cut off the excess lead len hs. IDENTIFICA TION DRAWING The steps on this page are done in this area of the circuit board, PICTORIAL 4 Page 9 CONTINUE Q NOTE: Refer to the HhlstJration low to determine the lo:a

34、tion collector (C), base (B), (E) leads of the 2N2369 (#417-154) transistors, Align the leads the holes in the circuit board, press down gently until the transis- tor is about 1/4 from the circuit board, Bend the leads to hold the transistor in place. ( ) Transistor 2N2369 (#417-154) at (:;8, Transi

35、stor 2N2369 (#417-154) at Q7. Transistor 2N2369 (#417-154) at Q6, ( ) Solder all the transistor leads to the foil and remove the excess lead lengths, NOTE: It may be necessary to bend the control lugs out slightly to hold the control in place until it is sol- dered, ( ) 10 krt control (#10-201). 10

36、krt control (#10-201). Solder all the control lugs to the foil. PROCEED TO PICTORIAL 5. POWER SUPPLY PARTS LIST Open package #2 and check each part against the following Parts List. The numbers in par- entheses correspond to the numbers on the Pow- er Supply Parts Pictorial. PART PARTS DESCRIPTION P

37、ARTS PICTORIAL No. Per Kit RESISTORS-CAPACITORS (1)1-1 1 1-89 1 47 n 1/2 watt resistor 70 . 1. . (ye How -violet-black) 2400 n 1/2 watt resistor (red-yellow-red) (2)25-126 1 50 /-LF capacitor DIOOES-TRANSISTOR (3) 56-66 1 VR 43 zener diode (4)57-65 2 Silicon diode (5)417-178 1 40389 transistor HARDW

38、ARE (6)250-89 4 6-32 x 3/8 screw (7)254-1 8 #6 lockwasher (8)252-3 8 6-32 nut MISCELLANEOUS CD J 54-205 1 Power transformer 85-256-2 1 Power supply circuit board 344-50 1 Black wire 344-52 1 Red wire HEATHKIT CD 8rr.Ui1 CD 11 Page 12 STEP-BY-STEP ASSEMBLY CIRCUIT BOARD MOUNTING AND ASSEMBL Y Detail

39、6B ( ) Refer four ers, 6B. Perform Detail 6A Detail 6A and fasten the power circuit board to the chaSSis. Use x 3/8 screws, four #61ockwash- four 6-32 nuts as shown in Detail steps on Pictorial 6. START . 47 r;z (yellow-violet-black). ) 2400 (red-Yellow-red). ) Install 40389 transistor(#417- 178 QI0

40、. The collector (C) and emitter (E) leads are on either side of the wide space, Line each lead with the cor- rect and position the tran- sistor the circuit board, ID:tE SPAC . . CE :-:.: ;.;. . . c B ) Solder all the leads to the foil and cut off the excess lead lengths. PICTORIAL 6 CONTINUE o NOTE:

41、 When installing diodes, the cathode end must be positioned as shown on the circuit board. The ca- thode end is marked with either a color end, color dot, color band, or a symbol. COLOR 001 SYMBOL (CATHODE COLOR BAND Silicon diode (#57-65) at D5, Silicon diode (#57-65) at D6. Zener diode VR 43 (#56-

42、66) at D7. ) 50 /IF tubular capacitor. NOTE: Match the positive (+) mark on the capacitor with the positive (+) mark on the circuit board. ( ) Solder all the leads to the foil and cut off the excess lead lengths. This completes the construction of the power supply circuit board ex- cept for the thre

43、e 300 /IF 60 V capa- citors which will be mounted later. FI N ISH Proceed with the mounting of the power transformer. Refer to Pictorial 7 (fold-out from Page 17) and to Detail 7 A for the following steps. ( ) Mount the power transformer to the under- side of the chassis with four #6 lockwash- ers,

44、and four 6-32 nuts. Connect the power transformer leads to the power supply circuit board as follows: ( ) One red to U (8-1). ( ) Red-yellow to V (8-1). ( ) The other red to X (S-l). NOTE: When wiring this kit, you may find it easier to prepare the lengths of hookup wire ahead of time, as in the fol

45、lowing step. The wires are listed in the order in which they will be used. Remove 1/4 of insulation from the ends of each wire. ( ) Prepare the following lengths of hookup wire: 6 red 5-1/2 black Twist these two wires together to form a twisted pair as shown in Detail 7B. ( ) At the end of this twis

46、ted pair with the 2 black Wire, connect the black wire to hole Y NEG (S-l) and the red wire to hole Z POS (S-1) in the power supply circuit board. ( ) At the other end of this twisted pair, connect the 1 black wire to hole C NEG (S-1) and the 3 red wire to hole A POS (S-1) in the wave generator circ

47、uit board. The chassis subassembly is now complete. Recheck your work; thEm proceed to the switch prewiring. 1 I 2 I 3/4 RED 3 I 2 BlK Detail 7A Detail 78 4 I 3 RE D 5 I Page 13 OP OF CHASS I 5 I 1-I r-sLK1 6 I Page 14 SWITCH PREWIRING PART PARTS No. Per Kit RESISTORS (1)1-83 1 1-84 1 1-66 1 1-94 1

48、1-63 2 1-131 1 1-96 1 1-97 5 1-98 5 1-89 1 1/2 Wcrtt. 1 % (2)2-249 2 2-248 2 2-247 2 2-50 2 2-97 2 2-98 2 2-99 2 2-11 2 CAPACITORS 1 1 HEATHXJ:T PARTS LIST Open package #3 and check each part against the following Parts List. The numbers inparen- theses correspond to the numbers on the Parts Pictorial (fold-