Velleman PCS32 Manual

5 (1)

PCS32 ASSEMBLY AND CALIBRATION MANUAL

Special tools for testing and adjustment:

IBM compatible computer (486 or pentium)

Signal generator

Digital multimeter

SEE MARKED TEXT FOR MODIFICATIONS

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ASSEMBLY

VERY IMPORTANT

-MOUNT ALL COMPONENTS AGAINST THE PCB

-MOUNT THE COMPONENTS IN THE ORDER INDICATED BELOW

The oscilloscope consists of twe PCBs:

1 The small PCB PPCMK2PS, which, among others, supplies the negative voltage; the on/off switch, the fuse and the supply connector are also mounted on this PCB.

2 The base PCB P7103, which the rest of the circuit is mounted on

1) ASSEMBLY OF THE POWER SUPPLY PCB PPCMK2PS

Mount the ¼W resistors

R1... R4: 5K6 (green, blue, red, gold) (RA5K6)

R5: 10K (brown, black, orange, gold) (RA10K0)

R6: 47K (yellow, violet, orange, gold) (RA47K0)

R7: 1K (brown, black, red, gold) (RA1K)

R10: 330 ohm (orange, orange, brown) (RA330E0)

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Mount the 1% metall film resistors

R8: 20K (red, black, black, red, gold) (MA20K0)

R9: 1R5 (brown, green, black, silver; brown) (MA1E5)

R11: 30 ohm (orange, black, black, gold, brown) (MA30E0)

Mount the coils

L1... L3: 220µH (red, red, brown) (220H0)

Mount the diodes (watch the polarity!)

D1: 1N4148 (1N4148)

Mount the ic sockets

IC1: 16P (16P)

Mount the capacitors

C1, C2: 2n2 (222) (C2N2)

C3: 100nF (104, µ1) (C100N0)

C4: 1µF (105) (C1M0)

Mount the electrolytic capacitors (watch the polarity!)

C5: 4,7µF (4µ7) (4J7J) Completely against PCB !

C6: 100µF (100J0D) Completele against PCB !

Mount the transistor

T1: BC327 (BC327)

T2: BC547 (BC547B)

Mount the fuse holder (FUSE/H’LC)

F1: Insert a 1A fuse in the fuse holder (FU1)

Mount the DC connector

J1: type (DJ-005)

Mount the screw connector

(SCREW02)

J2

 

REMARK: FASTEN THE TWO SCREWS !!!!!!!!!!!!!!!!!!!

Mount the 3mm LED (LED3RL)

LD1

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4mm

Insert the IC

Watch the position of the notch!IC1: CA3524 (CA3524)

MOUNT C7: 220µF (220J0D) AT SOLDER SIDE !

Connect snap 9V (2x) (red= +) (SNAP9V)

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Velleman PCS32 Manual

2) ASSEMBLY OF THE MAIN PCB P7103’3

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Mount the ¼W resistors

R1, R2, R42... R45,

R49, R51... R58: 470R (yellow, violet, brown, gold) (RA470E0)

R48, R50, R59... R61: 100R (brown, black, brown, gold) (RA100E0)

R29, R30: 100K (brown, black, yellow, gold) (RA100K0)

R3, R41: 47R (yellow, violet, black, gold) (RA47E0)

R46: 1K (brown, black, red, gold) (RA1K0)

R67, R68: 4K7 (yellow, violet, red, gold) (RA4K7)

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Mount the 1% metall film resistors

R9, R24: 360R (orange, blue, black, black, brown) (MA360E0)

R4, R14: 820R (grey, red, black, black, brown) (MA820E0)

R15, R34... R39: 1R5 (brown, green, black, silver; brown) (MA1E5)

R5, R16: 750ohm (purple, green, brown, gold) (MA750E0)

R10, R20: 30R (orange, black, black, gold, brown) (MA30E0)

R11, R21: 82R (grey, red, black, gold, brown) (MA82E0)

R47: 110R (brown, brown, black, black, brown) (MA110E0)

R7, R18, R31, R32: 200R (red, black, black, black, brown) (MA200E0)

R8, R19, R25.. R28: 470R (yellow, violet, black, black, brown) (MA470E0)

R13, R23: 10K (brown, black, black, red, brown) (MA10K0)

R12, R22: 91K (white, brown, black, red, brown) (MA91K0)

R6, R17: 910K (white, brown, black, orange, brown) (MA910K0)

R33, R40: 3R3 (orange, orange, black, silver; brown) (MA3E3)

Mount the diodes (watch the polarity!)

D1... D9, D11, D23... D26: 1N4148 (1N4148)

D13, D21: 1N4000... 4007 (1N4007)

Mount the adjustable resistors

RV1, RV4: 100ohm multiturn (E100TW or E100TY)

RV3, RV6: 4K7 (5K) (K004SH)

Mount the IC sockets

IC15, IC22: 24P

Mount the capacitors

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C89, C90: 10P

(C10)

 

 

C86, C87: 100P (101)

(C100)

 

C3, C8: 100P (101)

(C100)

 

C14, C20: 150P (151)

(C150)

 

C17, C26: 1N5/400V! (152, 1500) (5MQ1.5)

 

C15, C21: 2N2 (222)

(C2N2)

 

C4, C5, C9... C12, C41... C63,

 

C28, C29, C32, C37: 47nF (473) (C47N0)

 

C23, C38... C40,

 

 

C64... C70: 220nF (224) (C220N0M)

 

C25, C31: 47N/400V (K400) (1MK47)

 

C35, C36, C75, C76, C91, C92: 100N (104)

(C100N0)

C18 & C27 : 10nF (C103)

 

DO NOT MOUNT: C13, C19, C16

 

Mount the adjustable capacitors

CV1, CV3: 22P (green) (TRIM22P)

CV2, CV4: 50P (yellow) (TRIM65P)

Mount the transistors

T3, T5: 2N2907A (2N2907A)

T1, T2,: U441 (U441)

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