56
WhitakerAudio
Caution: leads may tend to fly toward the face when they are cut. Wear protective glasses. For
all steps that follow, excess lead length should be trimmed after the component is soldered in
place.
– Install R2 –
10 k
Ω
, 0.5 W
. Solder in place.
– Install R3 –
820 k
Ω
, 0.5 W
. Solder in place.
– Install R4 –
825
Ω
, 0.5 W
. Solder in place. Note that the form factor of this component is
typically larger than a common 1/2-watt resistor. It may be necessary, therefore, to mount
this component about 1/8-inch above the PWB in order to accommodate the leads.
– Install R5 –
220 k
Ω
, 0.5 W
. Solder in place.
Figure 5.1
Recommended procedure for mounting the quick-disconnect tabs on the PWB: (
a
)
insert the tap using pliers and carefully work it into the board, (
b
) position the tab so it is
perpendicular to the board, (
c
) check to make certain that the mounting pins extend outside the
foil side of the board, (
d
) solder in place.
(
a
)
(
b
)
(
c
)
(
d
)
Summary of Contents for J C Whitaker 20 W Stereo Audio Amplifier
Page 1: ...20 W Stereo Amplifier WhitakerAudio 20 W Stereo Audio Amplifier...
Page 10: ...10 WhitakerAudio Figure 1 1 b...
Page 14: ...14 WhitakerAudio Figure 1 2 The preamplifier power supply PWB...
Page 20: ...20 WhitakerAudio Figure 1 4 Power management expansion circuit for the 40 W Stereo Amplifier...
Page 37: ...37 20 W Stereo Audio Amplifier Figure 3 1 Component layout for the Amplifier PWB 1 right board...
Page 39: ...39 20 W Stereo Audio Amplifier Figure 3 2 Rectifier PWB component layout...
Page 42: ...42 WhitakerAudio Figure 3 3 Component layout for the Amplifier PWB 2 left board...
Page 46: ...46 WhitakerAudio Figure 3 5 Layout of the preamplifier power supply PWB...
Page 86: ...86 WhitakerAudio Figure 5 7 Power management expansion PWB a component side b foil side a b...
Page 135: ...135 20 W Stereo Audio Amplifier Figure 5 15 Chassis view of the 20 W Stereo amplifier...
Page 179: ......
Page 180: ...20 W Stereo Amplifier WhitakerAudio 20 W Stereo Audio Amplifier...
Page 184: ...184 WhitakerAudio Figure 1 1 Completed cable assembly...