
Model 428B
Circuit
Reference
Stock No.
Description #
Reference
C64
0150-0012
fxd cer, 10K pf +20%, 1000 vdcw
A1, 2
428B-26A
Assembly: ww resistor,
C65
0180-0058
fxd, elect, 50µf -10% + 100%, 25 vdcw
A1 includes, R3 thru R6
C66
0180-0104
fxd, elect, 200 µf 15 vdcw
A2 includes, R7 thru R10
C67
Not Assigned
A3
428B-26B
Assembly: ww resistor, includes R2, 11
C68
0170-0022
fxd, my, 0.1 pf +20%, 600 vdcw
C1
0140-0099
fxd, mica, 1K pf +1%, 500 vdcw
C69
0180-0104
fxd, elect, 200 µf, 15 vdcw
C2
0131-0004
var, mica, 14-150 pf, 175 vdcw
CR1 thru CR8
1901-0028
Diode, Si
C3 thru C10
Not Assigned
CR9
1902-0013
Diode, Si
C11
0150-0014
fxd, cer, 5K pf, 500 vdcw
CR10
1902-0014
Diode, Si
C12
0180-0050
fxd, elect, 40 uf -15% + 100%, 50 vdcw
DS1
2140-0012
Lamp:
indicating, #12, 2 pin base
C13
0170-0022
fxd, my, 0.1 uf +20%, 600 vdcw
F1, 2
2110-0007
Fuse:
1 amp, s-b ( F1 115 V operation)
C14
nsr, part of T1 assembly
2110-0008
Fuse:
1/2 amp, s -b (F1 230 V operation)
C15
0150-0012
fxd, cer, 10K pf +20%, 1000 vdcw
F3
2110-0012
Fuse:
1/2 amp
C16,
17
0170-0019
fxd, my, 0.1 of +5%, 200 vdcw
J1
1251-0089
Connector: female, 4 pin
C18
nsr, part of T1 assembly
J2
Not Assigned
C19
0150-0012
fxd, cer, 10K pf +20%, 1000 vdcw
J3
1250-0118
Connector: BNC, female
C20
Not Assigned
L1 thru L4
nsr; part of probe assembly (see misc.)
C21
0180-0059
fxd, elect. 10 uf -10% + 100%, 25 vdcw
L5, 6
428B-60K
Assembly, choke
C22, 23
0150-0015
fxd, TiO
2
2.2 pf +10%, 500 vdcw
2
L7
L8
9140-0049
9110-0025
Inductor: var, 16 mh
Inductor: degaussing
C24
0170-0078
fxd, my, 0.47 uf +5%, 150 vdcw
Ml
1120-0116
Meter: 0-5 ma, 6 -10 ohms
C25
0180-0058
fxd, elect, 50 of -10% + 100%, 25 vdcw
P1
1251-0090
Connector:
male, 4 pin
C26
0150-0012
fxd, cer, 10K pf ±20%
1000 vdcw
P2
8120-0050
Cable, power
C27
0140-0099
fxd, mica, 1K pf +1%, 500 vdcw
Q1
1854-0039
Transistor: Si NPN 2N3053
C28, 29
0150-0012
fxd, cer, 10K pf +20%, 1000 vdcw
Q2
1853-0016
Transistor: Si PNP 2N3638
C30
Not Assigned
Q3
1854-0003
Transistor:
2N1564
C31
0170-0019
fxd, my, 0.1 of +5%, 200 vdcw
R1
0687-6801
fxd, comp, 68 ohms ±10%, 1/2 W
C32
0140-0034
fxd, mica, 22 pf +5%, 500 vdcw
R2
nsr; part of A3 assembly
C33 thru C40
Not Assigned
R3 thru R10
nsr; part of A1, A2 assembly
C41
0140-0108
fxd, mica, 253 pf +2%, 300 vdcw
R11
nsr; part of A3 assembly
C42
0140-0041
fxd, mica, 100 pf +5%, 500 vdcw
R12
0727-0335
fxd, dep c, 10 ohms +10%, 1/2 W
C43 thru C50
Not Assigned
R13
0757-0002
fxd, mfg, 24.3 ohms ±1% 1/2 W
C51
0170-0019
fxd, my, 0.1 of +5%, 200 vdcw
R14
0727-0035
fxd, dep c, 68.4 ohms ±1/2%, 1/2 W
C52
0140-0149
fxd, mica, 470.pf +5%, 300 vdcw
R15
0727-0060
fxd, dep c, 225 ohms ±1%, 1/2 W
C53, 54
0140-2102
fxd mica, 8.2K*pf +2%, 500 vdcw
R16
0727-0085
fxd, dep c, 680 ohms ±1%, 1/2 W
C55
0140-0147
fxd, mica, 180 pf +5%, 500 vdcw
R17
0727-0120
fxd, dep c, 2250 ohms ±1%, 1/2 W
C56 thru C60
Not Assigned
R18
0727-0145
fxd, dep c, 6960 ohms ±1%, 1/2 W
C61
0180-0011
fxd, elect, 20 uf 450 vdcw
R19
0727-0178
fxd, dep c, 24.7K ohms ±1%, 1/2 W
C62A/B
0180-0012
fxd elect, 2 sect, 20 of sect 450 vdcw
C63
0140-0031
fxd, mica, 220 pf +10%, 500 vdcw
Circuit
Stock No.
Description
40
Содержание 428B
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Страница 11: ...Model 428B Figure 3 1 Measurement Procedures 4 ...
Страница 15: ...Model 428B Figure 4 1 Block Diagram 8 ...
Страница 27: ...Model 428B Figure 5 9 Detailed Troubleshooting Tree 20 ...
Страница 29: ...Model 428B 22 ...
Страница 35: ...Model 428B Figure 6 1 Parts Breakdown current probe 28 ...
Страница 37: ...Model 428B Figure 7 1 Block Diagram 30 ...
Страница 39: ...Model 428B Figure 7 5 Power Supply 32 ...
Страница 40: ...Model 428B Figure 7 6 Block Diagram 33 ...
Страница 44: ...Model 428B Figure A 1 428B Side Views 37 ...
Страница 45: ...Model 428B Figure A 2 Backdating Schematics for 428B 38 ...
Страница 46: ...Model 428B Figure A 3 Backdating Schematics for 428B 39 ...
Страница 52: ...Model 428B 00428 90003 PRINTED IN U S A 45 ...