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United Transformer 150 Varick St New York NY
Unitek Corp 275 N Halstead Ave Pasadena B Calif
Universa Atomics 19 E 48 St New York 17 NY
Universa Circuit Controls 3601 Oakton Skokie Ill
Universa Clay Products 1528 1 St Sandusky Ohio
Universa Electric Co Owosso Mich
Universa Electronics 1720 22 St Santa Monica Calif
Universa Mfg Co 410 Hillside Ave Hillside NJ
Universa Motor 186 Harrison St Oshkosh Wise
Universal Prods En0'g 4100 Taylor Racine Wis
Universa Scientific 1102 Shelby St Vincennes Ind
Universa Winding Co PO Box 1605 Providence 1 RI
Universa X -Ray Prods 1140 Western Ave Chicago
(Continued on page 365)
COMPLETE LINE of deflection yokes for every need including military
and special yokes. Focus Coils for tough problems. We'd like to help
you with new applications. Write or phone Dr. Henry Marcy today.
ntronic
INSTRUMENTS, INC.
170 Industrial Road Addison, III. Phone: TErrace 4 -6103
lib ltMLNit GRADE EE 284 EPDXY
,a)
Equipment Reliability
(Continued from page 97)
tube characteristics with operating
time. As an example, consider circuits
using type 5654 tubes which
will not function properly if the
slump of transconductance
II/
from
zero hours exceeds the percentages
.
ÑO OF T BB)ES 589
j'LIFE TURSS
N0. OF TUBES 0
oI /0
BO
LIFE (HOURS)2000
111 rz
NO.
DgUR5l5 3000
/rr- N0. CF TUBES 58
U7OF TUBES4 8
.11
I/, /
r
II
CONDITIONS
HEATER VOLTS
PLATE VOLTS
GRID NO 2 VOLTS
MS OFH TUBE'S
TYPE 588 40
TEST LIFE
63 6.3
100 100
63
100
GRID
EATER ICA HOER VOLTS 200
BULB TEMPERATURE VC) 220
T TEST WAS RUN F AT ROOM
TEMPERATURE
FE TEST WA ARM 1000 R M
r
NON -COMBUSTIBLE
TECHNICALLY DESIGNED HIGH TEMPERATURE EPDXY
for advanced circuitry specifications requiring: -
High Insulation Resistance under humid conditions
High heat distortion Low water absorption
Class H Insulating Properties
Circuits courtesy
Electralab Inc.
Needham Heights. Mass.
346
Government approved tests give following values:
Dielectric Breakdown
as received
55 + KV
(Parallel to lams. 1 mc)
48 hrs in H2O at 50 °C 60+KV
Dielectric Constant, 1 mc 48 hrs in H2O at 50 °C 4.8
Dissipation Factor, 1 mc 48 hrs in H2O at 50 °C 0.012
Volume Resistivity, Meg. cm as received 1 x 10
96 hrs at35 °C /90 %RH 2x10.
Water Absorption, % 24 hrs. 0.02
Surface Resistance, Meg. 96 hrs at 35 °C / 90% RH 30,000
Copper Clad Sheet
Bond Strength 12.15 lbs.
TiNtOuatPOI&
COMPANY, INC.
71 DUDLEY STREET, ARLINGTON 74, MASS.
For product information, use inquiry card on pages 209 -210.
)OI
90
70
60
10 20 30 40 50
CHANGE IN TRANSCONDUCTANCE -%.
Fig. 7: Reliability of 5840 tubes
Fig. 8: Test- 6101/6J6 WA
NUO OFTTUBE)S 158
l'UFE (HpU 1
N0. OF TUBEES 301
TYPE 610 r6Ú6 -W4
TEST LIFE
6.3 6 3
100 100
0 0 -
50 50
CONDITIONS
HEATER VOLTS
PLATE VOLTS
GRID VOLTS
40
CATHODE RESISTOR (OHMS)
GRID RESISTOR (MEGOHMS)
HEATER - CATHODE VOLTS
BULB TEMERATURE (MIN.,C)
I'I
UFE HOURS I 500
N0. OF TUBES
I'f'
o
rLiIÓ EOFHTWUBES 3BV
I l
10 20 30 40 50
CHANGE IN TRANSCONDUCTANCE -
0.5
ISO
165 -
TeleTech & ELECTRONIC INDUSTRIES June 1956
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