38
WhitakerAudio
3.1.2
Rectifier PWB
The rectifier PWB includes 15 quick-disconnect terminal posts, The wire connection codes for
this board are given in Table 3.2.
The overall component layout of the rectifier PWB is shown in Figure 3.2.
Table 3.2
Rectifier PWB Connection Wiring Codes
(Note that the color codes for the transformers listed in this table may vary. Consult device
documentation before proceeding.)
PWB
Code
Function
Connection
Color Code
Notes
6VH1
6 V ac heater connection
Green
Connects to green lead from T51
6VH1
6 V ac heater connection
Green
Connects to
6VH1
post on Amplifier PWB #1
(right) and #2 (left)
6VH2
6 V ac heater connection
Green
Connects to green lead from T51
6VH2
6 V ac heater connection
Brown
Connects to
6VH2
post on Amplifier PWB #1
(right) and #2 (left)
6VHct
6 V ac heater center-tap
Green/yellow
Connects to green/yellow lead from T51
400V
Plate voltage input
Red
Connects to red lead from T51
400V
Plate voltage input
Red
Connects to red lead from T51
T51ct
Center tap of plate secondary
winding
Red/yellow
Connects to red/yellow lead from T51
GND
Ground
Black
To GND terminals on right and left channel
PWBs
L51in
B+ input to choke
Black
To black lead of choke L51
L51out
B+ output from choke
Black
Black lead from choke L51
B+
Rectified B+
Red
To B+ terminals on PWB #1, right, and PWB
#2, left.
-60V
Rectified/filtered bias supply
output
White
To -60V terminal on Amplifier PWB #2 (left)
and power management expansion PWB
GND
Ground
Black
Connects to main chassis ground point
50V
50 V ac bias tap
Violet
Connects to violet lead from T51
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...