WESTERN ELECTRIC
RADIO TRANSMITTING EQUIPMENT
407A-4
Instructi ons for Use
CONTENTS
INTRODUCTI ON
1
DESCRIPTI ON OF APPARATUS
2
General
2
Main Transmitter As s embly
±
Equipment in 50-kw Encl osure
5
Equipment in 5
-kw
Enclosure
5
Equipment Outs ide Enc losures
6
DESCRIPTION AND ADJUSTiiENT OF C IRCUITS
7
Power Circuits
7
D-99119 Rectifier Tube Unit
10
Cir cuit Description
10
Circuit Adjus tment
1 2
Tub e Filament Adjus tment
13
D-99120 B ias Rectifier Unit
15
C ircuit Des cription
15
Special D-99114 Rectifier Unit
16
Circu it Des cription
16
Special D-99116 Control Unit and Cont rol C ircuits
17
General
1 7
Oscillator-Amplifier
18
Water System and Amplifier Filaments
1 9
Rectifier Filaments and Bias
20
B ias Rectifiers
21
Power Interrupti ons
2 2
High Voltage
24
Emergency Plate Circuit Breaker
25
Overl oad Tripping C ircuit
26
Protective Circuit
2 7
Plate Regulator
27
Os cillator-Amplifi er Control
28
Mis cellaneous Circuits
29
Water�Cooling System
29
I
Содержание 407A-4
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