This is only a preview of the January 1994 issue of Silicon Chip. You can view 29 of the 96 pages in the full issue, including the advertisments. For full access, purchase the issue for $10.00 or subscribe for access to the latest issues. Articles in this series:
Articles in this series:
Items relevant to "40V 3A Variable Power Supply; Pt.1":
Items relevant to "A Switching Regulator For Solar Panels":
Items relevant to "Printer Status Indicator For PCs":
Items relevant to "Simple Low-Voltage Speed Controller":
Items relevant to "Computer Bits":
Articles in this series:
Items relevant to "Control Stepper Motors With Your PC":
|
PRODUCT SHOWCASE
automatic antenna tuner, AT-300 automatic antenna tuner for long wire and
whip antennas, MB-13 mobile mount,
PS-32 power supply, LF-30A low pass
filter, TL-922 linear amplifier and SP50B mobile speaker.
Kenwood's TS-50S is covered by a
twelve month parts and labour warranty and it has a recommended retail
price of $1589. For further information on the TS-50S or other Kenwood
products, contact Kenwood on (02)
746 1888.
Rugged clamp
meter from Fluke
World's smallest
HF transceiver
Kenwood Electronics has introduced the world's smallest HF
Transceiver, the TS-50s. Designed for
operation on the 160 to 10m amateur
bands plus continuous coverage from
500kHz to 30MHz, the TS-50S also
supports SSB, (LSB & USB), CW, AM
and FM modes of operation.
Measuring 179mm wide, 60mm
high and 233mm deeps and weighing
2.9kg, the TS-50S is designed for the
ham shack, office and mobile installation. Although small in size, the
Low priced
colour scanner
Hewlett-Packard has introduced
the lowest, priced, highest-performance colour and grayscale flatbed
scanner it has ever produced, the
HP ScanJet IIcx. With improved
software and enhanced resolution,
the new unit performs up to twice
as fast as the previous model.
The HP ScanJet IIcx has 1600
dpi enhanced resolution and 400
dpi optical resolution for both
image and text scanning. Gray
scale scanning takes eight seconds,
compared with 15 seconds for the
previous model.
An optional transparency adapter allows the scanner to work with
90 Silicon Chip
TS-50S delivers 100 watts in SSB, CW,
FSK and FM modes and incorporates
an automatic cooling fan.
With 100 channels for transmit
and receive frequencies, the TS-50S
can hold both the A and B VFO, frequencies enabling FM split-frequency
repeater operation.
The split feature allows the user to
transmit on one VFO and receive on
another. Similarly, in TF-SET mode,
the operator can `lock' the receiver
frequency and then find the best
frequency at which the DX station is
located.
Optional extras include an AT-50
a variety of hardcopy media, such
as 35-mm slides, transparencies
and paper.
The adapter accepts transparencies ranging in size from 35mm to
8-1/2 x 11.7 inches. The scanner
also accepts standard paper sizes
up to 11 x 14 inches. An optional
automatic document feeder provides unattended scanning for up
to 50 pages.
Recommended retail price is
$2258 including sales tax, available from authorised HP dealers.
The optional 50-page automatic
document feeder is $1168.
For further information on
HP products and sevices, phone
131347 (no STD area-code required).
Fluke Corporation has developed a
new clamp meter which can measure
AC current to 400A and AC volts to
600V.
The new unit is intended for commercial, industrial and residential
electricians as well as for HVAC/R
(Heating Ventilation Air Conditioning
Refrigeration) service technicians. Its
tapered jaws, with centred opening,
give easy access to conductors in
crowded junction boxes.
The Model 30 is more accurate and
easier to use than analog meters. A
HOLD button “freezes” the display
so values can conveniently be read. It
conforms to the safety standards of the
IEC 1010 and has UL, CSA and TUV
certifications. Accuracy is quoted as
±1.3%, specified for one year after
calibration. Operating temperature
range is from -10°C to +50°C.
For further information, contact
Philips Test and Measurement, 34
Waterloo Rd, North Ryde, NSW 2113.
Phone (02) 888 8222.
Compact DC-DC
converter
Claimed to be the world's most
advanced, high density single and
triple output DC-DC converters, the
MicroVerter uV series can deliver up
to 250 watts.
These miniature converters are
available in three input voltage versions: 28 & 48V DC for the telecommunications industry and 300V DC
for distributed power applications.
Operating at a constant frequency,
the Micro-Verter series is parallelable
for current sharing, and is fault tolerant
with a true n+1 redundancy, offering
MTBF of over 1.1 million hours.
The converters have non-shutdown
over-voltage protection, thermal and
input OVP protection, extremely low
thermal resistance and an excellent
transient response.
As well as the single or triple voltage outputs, an "output good" signal
is provided and there is an optional
"sync" pin.
For further information, contact
Amtex Electronics, 13 Avon Road,
North Ryde, NSW 2113. Phone (02)
805 0844.
Central Coast
annual field day
The Central Coast Field Day is one
of the longest running events in the
Australian amateur radio calender.
The next Central Coast field day will
be held on Sunday 27th February 1994,
at Wyong Racecourse and this will be
the 37th year of this popular event.
As usual, the large contingent of
suppliers of electronic equipment,
High capacity
removable drive
Southend Data Storage have
announced a new removeable hard
disc drive from Teac Corporation.
The Drive, called TEAC-STOR
consists of the drive, docking bay
for a 5.25-inch slot and carrying
case, and is available in capacities
of 250 and 360 megabytes.
Both the 250MB and 360MB
models require only a single 5V
DC power source, a first for 3.5
inch hard disc drives. Power
consumption during read/write
operation is only 2.5 watts, giving
a significant power saving. Both
drives are compatible with the
industry standard IDE interface,
components and books will be attending.
These companies will have their
latest products on display and many
traders will have items on sale at very
special Central Coast field day prices.
Last year, the popular flea market
attracted a large number of people who
traded an enormous amount of surplus
electronic equipment to eager buyers
from trestles, trailers or from the boots
of their cars.
This year an even bigger program
of interesting lectures and equipment
displays has been arranged.
More than two thousand people attended last year’s Central Coast Field
Day and the next one at Wyong Racecourse will be bigger and better than
ever, so mark the 27th February 1994
down in your calendar. Gates will open
at 9:00 AM in wet or fine weather and
making them suitable for almost
any system.
For further information on
TEAC-STOR or other TEAC data
storage product, Rick Stanford of
Southend Data Storage, PO Box
25, Menai, NSW 2234. Phone (02)
541 1006.
all displays are under cover.
Compact
R/C modules
McLean Automation has introduced
a series of `bricks’,
being a range of
portable radio
control modules
housed in Clipsal
265/5 (210 x 110 x
80mm) enclosures
with carry bar.
Similar in appearance to a house brick with a handle,
these rugged units are affordable and
Australian made.
The brick series extends from simple
single button transmitters to multi
code transceivers capable of actuating
VIDEO
& TV
SERVICE PERSONNEL
TV & VIDEO FAULT LIBRARIES
AVAILABLE AS PRINTED MANUALS $90 EACH + $10 DELIVERY
BOTH MANUALS VIDEO & TV
$155 + $15 DELIVERY
OR AS A PROGRAM FOR IBM COMPATIBLES $155 + $10 DELIVERY
FOR MORE INFORMATION
CONTACT
TECHNICAL APPLICATIONS FAX / PHONE (07) 378 1064
PO BOX 137 KENMORE 4069
January 1994 91
Philips slashes
DCC prices
In a dramatic move to get DCC
players and recorders moving in
the marketplace, Philips has announced big price cuts. The fullhouse DCC900 recorder, previously
priced at $1799, is now $999 while
the DCC600, previously $1499, is
multiple remote loads with separate
on/off coding and receiving `loop
back’ acknowledgement of switching
function.
All systems have a 2km range from
a radio licence exempt HF transmitter
with excellent long wavelength diffraction performance around obstacles
in the propagation path. The transmissions are digitally encoded and the the
dry batteries give 6-12 months’ service.
For further information, contact
McLean Automation, PO Box 70,
Freemans Reach, NSW 2756. Phone
(045) 796 365.
now $799. And the recently released DC130, pictured here being
used by Australian aerobics champion Sue Stanley, is now $699.
Customers who have already
purchased a DCC player or recorder
at the old prices need only call
Philips at (008) 80 3312 to receive
a complimentary set of 25 pre-recorded DCCs.
High-power
subwoofer for cars
Kenwood Electronics has announced a subwoofer and dedicated
subwoofer amplifier guaranteed to
rattle the windows. Called the Letterbox, it measures only 251mm wide,
266mm high and 400mm deep and
can be mounted behind the seat, on
the van floor or in the boot.
The Letterbox is a bass reflex design
employing what Kenwood call a spherical flow duct. This is a tapered port to
enhance low frequency response down
Luxman amplifier & CD player: continued from p.32
checked out at -93dB at 1kHz which
is not quite as good as the claimed
-100dB but the dif
ference is largely academic since anything over
-70dB is more than adequate.
Measurements aside, we can state
that both the A-371 stereo amplifier
and D-351 compact disc player are
very fine products. They work well
and produce excellent sound quality
and, as the final icing on the cake,
92 Silicon Chip
they come with a 5-year full parts and
labour warranty.
Pricing is $1399 for the A-371 amplifier and $799 for the D-351 compact
disc player. Luxman equipment is
available from selected hifi retailers.
For the name of your nearest dealer,
contact the Australian distributor for
Luxman, International Dynamics Pty
Ltd, 78-80 Herald St, Cheltenham, Vic
3192. Phone (03) 585 0522. (L.D.S.)
delow 40Hz. Combined with reasonably high efficiency (90dB), can deliver
lots of bass. Designed to be used as a
single unit or in a multi-subwoofer
set up, the Letterbox can handle bass
program material up to 200 watts.
To drive the subwoofer, Kenwood
market the KAC-714 mono power amplifier, rated at 100 watts but capable of
delivering around 200 watts on peaks.
Measuring only 280mm wide, 50mm
high and 170mm deep the KAC-714
can fit snugly into most boots.
A built-in crossover offers variable
cut off from below 30Hz to 200Hz and
an input gain control match the sound
levels to other speakers.
The Letterbox subwoofer is priced at
$399 while the KAC-714 mono power
amp is $349. Both units are covered
by a twelve month parts and labour
warranty. For further information on
Kenwood car audio products and your
nearest Kenwood car audio dealer,
phone (008) 066 190.
Digital DC power
supplies
The new Leader Digital Series regulated DC power supplies consist of
five models: two 18V, two 36V and one
70V model. Intended for R & D, automated and educational applications,
the series features optional GPIB for
computer control.
The power supplies can also be
remotely controlled using the standard remote control connector. For
stable output, voltage drops caused
by test leads resistance and contact
resistance at the output terminal are
compensated for by using the sensor
plug provided.
For further information, contact
AWA Distribution, 112-118 Talavera
Road, North Ryde, NSW 2113. Phone
(02) 888 9000.
SC
|