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Paia 9720, Инструкция по сборке и использованию

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28      9720 VCO

010321

qnty

description

designation

Semiconductors

18

1N4148 or 1N914 Si diodes D1-D18

1

red LED

LED1

1

7812 +12V Regulator

IC2

1

7912 -12V Regulator

IC1

2

TL084 Quad FET OpAmps IC3,IC7

2

LM13700 Dual OTA

IC4,IC5

1

LM324 Quad OpAmps

IC8

1

LM339 Quad Comparator

IC6

4

2N3904 Si NPN Transistor

Q5,Q6,Q7,Q10

2

2N3906 Si PNP Transistor

Q1,Q4

2

2N3906 Matched Pair

Q2/Q3,Q8/Q9

Ceramic Disk Capacitors

3

0.001uF

*C24,C13,C17

6

0.01uF

C3,C5,C9,C15,

C20,C23

7

15pF

C7,C8,C10,C14,

C18,C19,C21

Polystyrene Capacitors

2

4700pF

C11,C16

Electrolytic Capacitors

2

1uF 15V.

C12,C22

2

470uF / 25V.

C1,C2

2

4.7uF / 15V

C4,C6

Potentiometers

2

5meg Panel Mount

*R200,*R201

1

1 meg Panel Mount

*R205

3

100k Panel Mount

*R203,*R204,*R206

1

10k Panel Mount

*R202

2

10k pc Trimmer

R5,R87

2

1k pc Trimmer

R27,R58

1/4W 5% resistors

3

1.5m

brown-green-green R21,R43,R97

11

100k

brown-black-yellow R3,R6,R10,R12,

R35,R38,R89,R90,

R94,R95,R96

5

10k

brown-black-orange R34,R47,R56,R68,

R78

2

10meg brown-black-blue

R63,R73

5

120k

brown-red-yellow

R7,R18,R45,R77,R79

3

12k

brown-red-orange

R19,R54,R61

2

1500

brown-green-red

R66,R75

1

150k

brown-green-yellow R91

1

15k

brown-green-orange R76

1

180k

brown-grey-yellow

R60

4

18k

brown-grey-orange R4,R11,R81,R86

2

1k

brown-black-red

R31,R57

1

22

red-red-black

R1

4

220

red-red-brown

R24,R46,R50,R88

8

2200

red-red-red

R13,R15,R22,R32,

R65,R74,R83,R84

3

220k

red-red-yellow

R100,R102,R106

2

2400

red-yellow-red

R25,R52

4

27k

red-violet-orange

R51,R62,R67,R72

7

3300

orange-orange-red

R26,R49,R53,R70,

R104,R33,R99

2

33k

orange-ornge-ornge R9,R85

2

390k

orange-white-yellow R17,R41

9720FRM

FracRak Accessory Kit

18 1/8" CC Jack

1

9720 FracRak Panel

2

#4 "L" Brackets

2

4-40 Machine Nuts

4

#4 X 1/4" Machine Screws

4

Self-tap Screws

9790 Power Connector Kit parts:

1

4 pin .1 Friction Lock header

1

4 pin .1 terminal housings

4

.1 crimp terminals

4

16" lengths #22 stranded wire

3

Nylon Wire Ties

3

39k

orange-white-orange *R208,R28,R55

1

470k

yellow-violet-yellow R30

4

47k

yellow-violet-orange R39,R69,R92,R105

1

56

green-blue-black

R2

4

5600

green-blue-red

R64,R82,R36,R37

6

56k

green-blue-orange

R20,R23,R44,R48,

R71,R93

2

750

violet-green-brown

*R207,R29

2

82k

grey-red-orange

R98,R101

4

91k

white-brown-orange R8,R59,R80,R103

1/4W. 1% metal film resistors

5

100k

brwn-blk-blk-ornge

*R209,R14,R16,

R40,R42

Miscellaneous

2

mini Toggle Switches

*S1,*S2

1

9720 circuit board

1

Assembly Manual

7

set screw knobs

4

5ft lengths #26 stranded wire

1

18 inch length #24 bare wire

1

4" length small diameter tubing

1

3" length large diameter tubing

5

Nylon wire Ties

9720 Parts List

Содержание 9720

Страница 1: ...tch over a 3 octave range The Sync input provides for Soft Synchronization to an external audio source Oscillator B is very similar to Osc A but subtle differences optimize the flexibility of the pair...

Страница 2: ...silly and ritualistic but it greatly decreases the chance of omitting a step and also provides some gratification and reward as each step is completed Numbered figures are printed in the Illustration...

Страница 3: ...ver the soldering pad and about 1 16 inch of lead passing through it There are two improper connections to beware of Using too little solder will sometimes result in a connection which appears to be s...

Страница 4: ...in later steps The 9720 VCO uses 1 film resistors in precision circuitry and 5 carbon film resistors in non critical locations Not all resistors are mounted on the circuit board some will be left ove...

Страница 5: ...brown R24 R46 R50 R88 listed below 2200 red red red R13 R15 R22 R32 R65 R74 R83 R84 R100 220k red red yellow R102 220k red red yellow R106 220k red red yellow R25 2400 red yellow red R52 2400 red yell...

Страница 6: ...mic Disk capacitors are already parallel to each other but still may need to be bent slightly to match the spacing of the circuit board holes The leads of the Polystyrene capacitors will need to bend...

Страница 7: ...capacitors are polarized and the leads are not interchangeable Leads are marked and or and the lead must go through the hole in the circuit board Frequently the positive lead of the capacitor is sign...

Страница 8: ...hem in the circuit board Note that the transistors are polarized by the flat side of the case When the transistors are properly installed this flat will align with the corresponding mark on the circui...

Страница 9: ...before assembly or if you do touch a lamp or something to make sure you re discharged Don t be intimidated It s rare for parts to be damaged this way ICs are polarized in one or both of two ways A do...

Страница 10: ...is flat will align with the corresponding flat in the LED symbol printed on the circuit board When the 9730 is installed behind its front panel the LED will engage the holes in the front panel and be...

Страница 11: ...but this time be critical It would be a good time to double check the orientation of polarized parts and that the right resistors and capacitors are in the right places Examine the solder joints On t...

Страница 12: ...ing the S lugs of J12 J16 to the wire by bending them up until they touch the wire then soldering the two together DO NOT SOLDER the connection at J18 Using the flat washers and nuts supplied mount th...

Страница 13: ...nd crimp it back to mechanically secure it Connect the free end of the solid wire extending beyond J11 S to R203 1 ns Cut a 3 3 4 length of bare wire and pass it through the holes in the S lugs of J1...

Страница 14: ...lied and slip one over each resistor lead Trim the leads so that 1 4 extends beyond the sleeving Use this part as R207 to make the connection from R200 1 s1 to R201 1 ns Similarly insulate the leads o...

Страница 15: ...t engages the hole provided for it in the front panel as shown in fig 2 Attach the circuit board to the front panel by passing 4 40 X 1 4 Machine Screws through the panel from the front and into the t...

Страница 16: ...more solder Allow the joint to cool and test it by wiggling the wire to make sure the joint is firm Do not wrap the wings of the pin around the wire Slide the power pins into the connector body Note...

Страница 17: ...about something else for a while When you come back take the time to do a final check The flying wires to the panel aren t bundled with wire ties yet and we ll leave them that way for now so move them...

Страница 18: ...different half or twice more for instance it may indicate an incorrect component value or power supply lines that are out of spec check for hot parts among the power supply components mentioned in ste...

Страница 19: ...ator out to OscA PW input and listen to observe PWM effect Notice that the output is silent for a part of each cycle when the Output control is CW beyond the 12 o clock position Problems with these te...

Страница 20: ...ustration With 4V output from the controller adjust OscB pitch for 2 octaves above OscA then with 0V output adjust Scale B trimmer R52 for a pitch 2 octaves below OscA Iterate this procedure until sat...

Страница 21: ...a second reading more things will make sense and on a third even more Be sensitive to how different sections of ICs are used For example notice that both the OscA Ramp and OscB Pulse outputs use secti...

Страница 22: ...s that define ramp triangle and pulse waveforms OscB Pitch CV Input 1 The arrow indicates that this input is normalized to the output of the glide processor and consequently OscA P1 Inserting a plug i...

Страница 23: ...he output high Periodic Trigger pulses hard sync the LFO Output Amplitude of the Control Voltage from this output is set by the Output control The arrow indicates that the Modulator Output is normaliz...

Страница 24: ...shaper that has opamp IC8 B as it s active element As the ramp increases toward ground from its minimum of 6 5V diodes D15 and D16 are both reverse biased and the opamp acts as a unity gain inverter...

Страница 25: ...of that voltage Taking OscA as typical the voltage across the b e junction of Q3 produces a collector current that is exponentially related to voltage increases When properly calibrated collector cur...

Страница 26: ...hich couples to the buffered timing capacitor voltage and the positive feedback resistor network R100 R106 These values are chosen so that when the timing voltage reaches 10V the voltage at the input...

Страница 27: ...9720 VCO 27 010321...

Страница 28: ...60 4 18k brown grey orange R4 R11 R81 R86 2 1k brown black red R31 R57 1 22 red red black R1 4 220 red red brown R24 R46 R50 R88 8 2200 red red red R13 R15 R22 R32 R65 R74 R83 R84 3 220k red red yello...

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