WhitakerAudio 60 W Stereo Power Amplifier, User And Assembly Manual

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WhitakerAudio
Parts are organized by component number and device type. For example, all 1 k
Ω
1/2-watt
resistors are packaged together. Each group of parts is placed in a resealable (clasp-type) envelope
with a self-adhesive label applied. Labels such as Avery #5260 are useful for this purpose.
Recommended envelopes include the following:
• 2.25-inch by 3.5-inch envelope (Staples no. 1 coin envelope)
• 3-3/8-inch by 6-inch envelope (Staples no. 6 coin envelope)
• 6-inch by 9-inch clasp envelope (Staples)
While this sorting requires some up-front organizational time, it serves as a check that all parts
are accounted for and speeds assembly of the PWB.
Table 3 lists the labels used for the this device.
Table 3 Automatic Protection Option Component Package Labels
C201
470 μF, 25 V electrolytic
Auto-Off
R201
8.2 m
Ω
, 0.5 W
Auto-Off
R213, R217
470
Ω
, 0.5 W
Auto-Off
C202
1000 pF, 100 V
Auto-Off
R202
15 m
Ω
, 0.5 W
Auto-Off
R214, R215, R218, R219
180 k
Ω
, 0.5 W
Auto-Off
C203
0.047 μF, 100 V
Auto-Off
R203, R206, R212, R216
150
Ω
, 0.5 W
Auto-Off
Q201, Q202
2N494/2N491 (NTE6400A
Auto-Off
C204, C205, C207
1,000 μF, 50 V, electrolytic
Auto-Off
R204
402 k
Ω
, 0.5 W
Auto-Off
Q203, Q208
C9F (NTE5408)
Auto-Off
C206
0.01 μF disc, 1 kV
Auto-Off
R205
33
Ω
, 0.5 W
Auto-Off
Q204, Q206
2N406 (NTE102A)
Auto-Off
D202, D204, D205, D207,
D208, D209
Rectifier diode, 1 A, 600 V
Auto-Off
R207
1 k
Ω
, 2 W
Auto-Off
Q205, Q207
2N3053 (NTE128)
Auto-Off
D203
Zener, 25 V, 5 W
Auto-Off
R208
1 k
Ω
, 0.5 W
Auto-Off
VR201, VR202, VR203, VR204
Varistor, 130 V ac
Auto-Off
D206, D210
Zener, 15 V, 5W
Auto-Off
R209
2 m
Ω
, PC-mount potentiometer
Auto-Off
CR201
Bridge rectifier, 100 V, 2 A
Auto-Off
3/8-inch threaded #4 standoff
quantity = 5
Auto-Off
R210
390
Ω
, 2 W
Auto-Off
CONN201
4 terminal Molex header, hous-
ing, and terminals
Auto-Off