104
WhitakerAudio
the bottom chassis plate. After each terminal is attached to a lead, gently pull on the wire and
terminal to make sure a good crimp has been made.
– Connect PL1 – output transformer plate 1 connection. Find the
blue
wire from the left
channel output transformer (T2). Install a connector to the end of the wire. Attach to the
PL1
post on the left channel PWB.
– Connect SC1 – output transformer screen 1 connection. Find the
blue/yellow
wire from
the left channel output transformer. Install a connector to the end of the wire. Attach to the
SC1
post on the left channel PWB.
– Connect PL2 – output transformer plate 2 connection. Find the
brown
wire from the left
channel output transformer. Install a connector to the end of the wire. Attach to the
PL2
post on the left channel PWB.
– Connect SC2 – output transformer screen 2 connection. Find the
brown/yellow
wire from
the left channel output transformer. Install a connector to the end of the wire. Attach to the
SC2 post on the left channel PWB.
– Connect T2ct – output transformer center tap. Find the
red
wire from the left channel
output transformer. Install a connector to the end of the wire. Attach to the
T2ct
post on
the left channel PWB.
Double-check the connections from the left channel output transformer to the PWB.
5.6.7.4
Power Transformer Leads
In the following steps, trim the transformer lead lengths so the wires will comfortably reach their
respective terminals. After each terminal is attached to a lead, gently pull on the wire and terminal
to make sure a good crimp has been made.
– Connect 400V – plate winding. Find one of the two
red
leads from the power transformer
(T51). Install a connector to the wire. Attach to one of the
400V
posts on the rectifier
PWB.
– Connect 400V – plate winding. Find the other
red
lead from the power transformer. Install
a connector to the wire. Attach to the available
400V
post on the rectifier PWB.
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...