Electronics-World-1959-05

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ETCHED CIRCUIT VTVM KIT
Tinge proven for dependability, accuracy and
overall quality, the V7 -A is one of the wisest
investments you can make for your electronic
workshop or lab. Its multitude of uses will make
it one of the most often used instruments in
your possession. Use it to measure all operating
voltages and potentials such as B+ and AC -DC,
or straight AC power supplies, filament voltage,
bias voltage, AVC voltage, line voltage, etc.
Ideal for measurements in all types of AM, FM
and TV circuits. Checks discriminator or detector
operation, AVC or AGC performance,
while the ohmmeter may be used to measure
circuit continuity, circuit resistance, to test out
individual components with resistance measurement,
or to trace circuit wiring through cables or
chassis openings. Front panel controls consist
of rotary function switch and a rotary range
selector switch, zero -adjust and ohms -adjust
controls. Precision I e,; resistors are used in the
voltage divider circuit for high accuracy and an
etched circuit board is employed for most of the
circuitry. The circuit board not only simplifies
assembly but permits levels of circuit stability
not possible with ordinary conventional wiring
methods. Shpg. Wt. 7 lbs.
TUBE CHECKER KIT
Brand new in every respect, the TC -3 features outstanding performance and
ease of operation. Sockets are provided for 4 -pin, 5 -pin, 6 -pin, 7 -pin, large,
7 -pin miniature, 7 -pin sub -miniature, octal, loctal, and 9 -pin miniature tubes.
Protection against obsolescence is provided by a blank socket to facilitate
modification for checking newly added tube types. A 10 -lever switch makes it
possible to connect any element to any other element regardless of the pin
numbers involved. A neon bulb indicator shows filament circuit continuity and
leakage or shorts between elements. A specially designed spring loaded roll
chart mechanism permits the roll chart to run freely throughout its entire
length without binding.
Thumb wheel drive knobs are
provided on both sides of the
panel to accommodate the
left handed operator. Compact
and small in size, the
TC -3 is ideally suited for portable
applications. Both the
roll chart and the meter are
illuminated to facilitate use
in darkened areas. Shpg. Wt.
12 lbs.
MODEL AV -3
$2996
HANDITESTER KIT
Ideal for use in portable applications
when making tests away
from the work bench or as an
"extra" meter in the service
shop. The combination function
range switch simplifies operation.
Measures AC or DC voltage
from 0 to 10, 30, 300, 1,000
and 5,000 volts. Direct current
ranges are 0 to 10 ma and 0 to
100 ma. Ohmmeter ranges are 0
to 3,000 and 0 to 300,000. Top
quality, precision components
used throughout. Small and
compact, take it with you wherever
you go. Very popular with
home experimenters and electricians.
Test leads and 11/2 volt
size C battery are included with
the kit. Shpg. Wt. 3 lbs.
20,000 OHMS /VOLT
VOM KIT
Portable and accurate, this kit
features a 50 ua 41h' meter and
r; precision multiplier resistors
for high accuracy. No external
power required. Provides
a total of 25 meter ranges on a
two -color scale. Sensitivity is
20,000 ohms- per -volt DC and
5,000 ohms- per -volt AC. Measuring
ranges are 0 -1.5, 5, 50,
150, 500, 1,500 and 5,000 volts
AC and DC. Measures direct
current in ranges of 0 -150 na,
15 ma, 150 ma, 500 ma and 15 a.
Resistance multipliers are X 1,
X 100 and X 10,000. Covers
-10 db to +65 db. Housed in
an attractive bakelite case with
plastic carrying handle. Batteries
and test leads included.
Shpg. Wt. 6 lbs.
AUDIO VTVM KIT
This vacuum tube volt meter
emphasizes stability, broad frequency
response and sensitivity
for accurate measurement of
critical AC voltages. Features
a large 41/2' 200 ua meter with
increased damping in the meter
circuit for stability in low fre-
quency tests. Measures AC from
a low value of 1 millivolt to a
maximum of 300 volts AC
(RMS). Voltage ranges are:
0 -.01, .03, . I , . 3, 1, 3, 10, 30, 100
and 300 volts. Db ranges cover
-52 to +52 db. I precision
multiplier resistors used for
maximum accuracy. Frequency
response is essentially Oat from
10 CPS to 200 kc. Shpg. Wt.
6 lbs.
MODEL BE -5 $3995
LOW RIPPLE BATTERY
ELIMINATOR KIT
Complete') up to date the BL -5
will power all the newest transistor
circuits requiring 0 to 12
volts DC, and the new hybrid
automobile radios using both
transistors and vacuum tubes.
An extra low- ripple filter circuit
is employed holding AC ripple
down to less than .3r; . Doubles
as a battery charger or marine
converter. Shpg. Wt. 21 lbs.
MODEL T -4
$1995
VISUAL -AURAL
SIGNAL TRACER KIT
Nevi in esery the 1 -4
features a built-in speaker and
electron beam "eye" tube for
signal indication, and a unique
noise locator circuit. Ideal for
use in AM, FM and TV circuit
investigation. Transformer operated
for safety and high efficiency.
Complete with test leads
and informative construction
manual. Shpg. Wt. 5 lbs.
MODEL C -3 $1950
CONDENSER
CHECKER KIT
Check unknoe it condenser and
resistor values quickly and accurately
as well as their operating
characteristics with this
fine instrument. All values are
read directly on a calibrated
scale. An electron beam "eye'
tube indicates balance and leakage.
A valuable addition to any
service shop or lab. Shpg. Wt.
7 lbs.
MODEL CT -1 $795
IN- CIRCUIT
CAPACI- TESTER KIT
This handy kit checks capacitors
for "open" or "short" right
in the circuit. Detects open capacitors
from about 50 mmf,
not shunted by an excessive low
resistance value. Checks shorted
capacitors up to 20 mfd (not
shunted by less than 10 ohms).
Checks all bypass, blocking and
coupling capacitors of the paper,
mica or ceramic types. (Does
not detect leakage nor check
electrolytic condensers.) Electron
beam "eye" tube is used
for quick indication. A 5 -position
function switch is featured
which controls the poser to the
instrument and selects the test
being made. Easy to build and
easy to use. Test leads included
Shpg. Wt. 5 lbs.
May, 1959 77