Western electric 18 schematic

Page 1

Wemm weenie Company
No. l 8-A & l8-B RECTIFIERS

Use # RCLUfiCl type power units for supplying plate and
lilamcnt power to speech input and sound system tun-
plifiers.

Descriplion W A full wave vacuum tube rectifier for plate
supply and a transformer winding to supply filament
power. Normally used to supply power for Western Elec-
tric Types 120, 121, 129, 150, 131, 132. 153 and similar
amplifiers. The 18A is designed for mounting: on a 177
Type Mounting Plate with additional rectiliers or other
plate mounted units. The 183 is designed for Llllctt mount~
ing on a relay rack or equipment cabinet,

Features

Efficient.

Compact.

Rugged construction.

Tapped transformer permits input and output \oltugu
selection,

Spetifica'ions

Input: 105-125 volts, 50 or 60 cycles a-t. Approximately
100 watts for full load

o~
:l':

/ Figure 2 _ IBB Rectifier.

Figure 1 7 18A Reamer.

Output: Plate supply maximum 75 ma. at approximately
250 volts dt, taps on high voltage winding of transformer
to maintain voltage between 320 and 250 volts d-c for
loads between 0.007 amperes and 0.075 amperes. Filament
supply maximum 8 amperes at approximately 6.3 volts a-c.

Dimensions: (18A) 10-3/16 wide, 5-7/52" deep and
(Vii/16 high.
(1313) 195/32" wide, 3715/32" high, 6-27/32 deep.

Weight: (18A) 9 pounds.
(188) 12 pounds.

Mounting: (18A) Designed for mounting on 177 or 190
Type Mounting Plate with 296 Type panel (Capacity 3 teCti-
licrs per plate) See "Components and Accessories" for
ordering information.

(188) Designed for mounting on standard 19 relay
rink (includes face mat) or equipment cabinet. Occupies
31/2 of rack space.

Finish: (18A) Gray enamel.
ISB»15 Dark aluminum gray.
18B-3 Black.

Tuber: One W13. 274A or one Type 523.

*171i