Western electric 104 b schematic

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Was-Wm Electric Company
No. I O4-B AMPLIFIER

COMMERCIAL PRODUCTS no l-5l
APPARATUS REFERENCE SHEET AMPLIFIER
I04 5
2 - 6-39

mm

THE 1043 AMPLIFIER IS A SINGLE STAGE AMPLIFIER INTENDED POR
USE AS A PRKIHING 0R LOW LEVEL LIFER IN SPEECH m1 KQUIPEKNTS
170R RADIO TELEPHONE BROADCASTING. IT IS INTERCRANGEABLE WITH TE
IOAA AMPLIFIER AND SIMILAR IN DESIGN EXCEPT THAT TE 1043 AMPLIFIER
HAS A BETTER SHIELDED INPUT TRANSFORIKR, IS PROVIDKD RITE TERMINALS
FOR OPERATING FRO! PLATE VOLTAGBS OF 200 AND 250, IN ADDITION To Tim
375 VOLTS REQUIRED FOR THE IOAA AKPLIYIKR AND IS SUPPLIILD WITH FOUR
FLEXIBLE NOUNTINGS.

. so mus, TERN. . 1-2, 250 om, mural-a.
. OPEN CIRCUIT
OPERATES INTO... . 30 OBIS, TERNS. 7-8, SOD-600011, W's. 6-7.
INTERNAL OUTPUT IMPEDANCE. an OR :30 cans
OUTPUT NOEL... APPROX.-IlO DB wT'D,-Ioo DRUNwIMO DB - em)
OUTPUT POWER 60 IICRO'ATTS (20 DB)
POWER SUPPLY.. . )ILANEN'I 0.32 AMP. AT I0 1 0.3 V. AC 0R ,

DC, TERN'S. 15-16. PLATE 0.6 u AT 373 3wfiihrfi7rffifir,m
v. US, TRRM. 9, 250 v. TRRU. Io, 200 v. / '4"! MW-
TERI. II. NEGATIVE PLATE VOLTAGE, TERM. 12. /

COMPLBTK POWER SUPPLY MAY BE OBTAINED FROM FOLLOWING EQUIPMENT:

SUPPLIES 104
W W
7011. SPEECH INPUT BAY.
105A ANPLIFIER........ .. .. .
106A AMPLIFIER PLUS 221A RRTARD. coIL AND 5 MP UOND.. 51x
ISA RECTIFIER...

ORE 2625 VAGUIW TUBE Is RBLI'IRED. (Must El 011me WWTSLYJ

HEIGRT .............. APPROX. 4-3/4 LBS.

DIENSIONS.. . SLN ILLUSTRATION.

U0UNTING.... . 998A, 9988 OR 9950 MOUNTING PLATES UILL ca
MOUNT TURRL' 104 TYPE AMPLIPIRRS.

FINISH ...... CADNIUN.

W
INSTRUCTION BULLETIN N0. 869

EEO-611721. . SCEENATIC AND WIRING DIAGRAM

RED-611795. . ASSEMBLY AND STOCK LIST

ESL-613878. . APPARATUS LIST FOR CUSTOMERS USL

BSA-744992. . GAIN vs. FREQUENCY CNARACILRISTIC 9 M45 [MPH/ER .; .. E

RS-745050.. POWER OUTPUT vs. TOTAL HARNONIC DISTSRTIOI: 4000/5 00702770 '5 1,
Q

PHOTOGRAPH N0. 81751,83 | [6.

00 5!: 4h FUA/JIMEA/Ill

PE: (EN

30 10° 5°00 10°00
mm! 1! CYCLE m SIGNED

cuRVIA-mv'rnwumn'mm. 1-!
own f0 30 um IRGM rims. 7-5

m" B - In? all!" no ow 10 ms. 1-:
0m to 500 038 1RD! ms. l-7

FOR WIRING DIAGRAM AND SCHEMATIC SEE REAR OF TPlls SHEET

*88*

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Western Electric Company
No. | O4-B AMPLIFIER

WIRING DIAGRAM

PANEL
6ND.

ND|TES

WIRES MARKED 'A ARE FURNISHED
As PART OF APPARATUS

2. WIRES MARKED ~~B ARE NOIBA. W.G SOLID WIRE
FER K5 76I2

3. WIRE MARKED C SHALL BE 64 LONG PASSED
THROUGH HOLE IN PANEL AND ITS END
EQUIPPED WITH GRID CL.= ITEMIZ E50 6I|795

, WIRES MARKEDhFARE TWISTED PAIRS

5 APPARATUS DESIGNATIONS ARE FOR REFERENCE
ONLY AND Do NOT APPEAR ON APPARAYus

SCHEMATIC
2523
VACUUM YUBE
| C RD TIé GR-WM VI BL-WH T2 RD 07
a RDAWH I MA : "9" a
_ .
g cm 3 C3
3 C BL GR_H _ I OR 3|- 40,,
usurl 0.4MF
ELK W
cl 2 DESK}... W
osur
R2 T1 615A INPUT TRANSFORMER
000" TE 1703 OUTPUT TRANSFONIIER
RI om 61.1, (11.2 1440 CONDENSER 0.5-0.5 NF.
CE 2290 CONDENSER 1.0 NF.
R3 R7 03 230A CONDENSER 0. 4 IF.
R1 0 1 Boom)
me" C: ova-n. 1.11. C. m
| R2 4000 OBIS ) 3 ET 1/2 RESISTANCAS
R3 I. R. 0. mx BI 1/2 RES. 106 OHS 1 5f
IMF R4 I.R.C. TYPE "3 RES. 0.]. IBGOEI t 5;
R5 Rb R5 125,000 OBIS)
p213 lemma. 75000- 116 15,000 onus )I.R.C. 'mn BTl RESISTANCES
' _ . R7 200,000 OEIS)
l (E O

:0

I4 I2 5 4 l0 5 I5 I6

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