This is only a preview of the April 1996 issue of Silicon Chip. You can view 26 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:
Items relevant to "A High-Power HiFi Amplifier Module":
Items relevant to "Replacement Module For The SL486 & MV601":
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Items relevant to "Build A Knock Indicator For Leaded-Petrol Engines":
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PRODUCT SHOWCASE
Night vision viewer
from DSE
While SILICON CHIP has published
build-it-yourself night viewers in the
past, Dick Smith Electronics now have
Apple Nighteyes as a commercial
product. It is envisaged that it will be
popular with boat users venturing out
after dark. Other people who may be
interested include hunters, wildlife
and bird watchers, caving enthusiasts
and security companies.
The unit is manufactured by Zenit
who are well-known for photographic
lenses. Apple Nighteyes has a lens
magnification of 3.8 times while the
internal photomultiplier gives a light
amplification of 10,000 times. It also
comes with an IR LED illuminator to
allow observation in total darkness.
Apple Nighteyes is priced at $999,
comes with a 12-month replacement
warranty and is available from all Dick
Smith Electronics stores.
Macservice
garage sale
How can a business have a garage
sale? There is one way to find out
and that is to visit the premises of
Macservice Pty Ltd. They are having
a warehouse sale of “as traded” and
imported stock on Sunday, 5th May
from 9.00 AM to 5.00 PM. Prices start
from a dollar!
Interstate and country buyers do
not need to miss out as they can phone
for a list of gear on sale. The sale will
be at the Macservice warehouse, 20
Fulton St, South Oakleigh, Vic 3167.
Phone (03) 9562 9500; fax (03) 9562
9590.
Digital multimeter has
computer interface
The Nilsen BX-905AC digital
multimeter offers voltage, cur
rent,
resistance, frequency and capacitance
measurement, as well as dB calculation. It features manual or auto-ranging
modes and is provided with an RS-232
serial output to connect it to a comput
er. Software is provided to enable it to
88 Silicon Chip
be used for data logging and
in manufacturing.
dB calculation is presented
as dBm; ie, relative to 0.775V
RMS into a 600-ohm load.
The BX-905AC has relative
value display and a memory capable of storing and
recalling five data points.
Other features include min/
max value storage, low/high/
pass display, and automatic
power off after 20 minutes
of non-use.
Voltage measurements can
range up to 1000V DC or 750V
AC, current up to 20A AC/DC,
resistance to 40MΩ, capacitance to 100µF and frequency
to 1.999MHz.
For further information,
contact Nilsen Technologies,
150 Oxford St, Collingwood,
Vic 3066. Phone (03) 9419
9999; fax (03) 9416 1312.
Fluke RLC meter tests
at up to 1MHz
This new RLC meter from Fluke,
the PM 6306, can test components
at any frequency between 50Hz and
1MHz. This is desirable for testing a
wide range of components, particularly those used in switchmode power
supplies, and low value capacitors
and inductors.
In addition, the PM 6306 features
continuously variable AC and DC
voltage scales so voltage behaviour
of components can be analysed. An internal bias
source can provide up to
10V DC for testing electrolytic capacitors and semiconductor junctions or up
to 40V DC can be applied
from an external source.
A deviation mode makes
component comparisons
quick and efficient, providing a percentage readout of the different between the measured component
and the initial reference.
Fully automated testing with up
to 10 measurements per second can
be handled when the PM 6306 is
April 1996 89
AUDIO MODULES
Over-temperature
alarm from Hypec
Manufactured in Australia
Harbuch Electronics Pty Ltd
9/40 Leighton Pl. HORNSBY 2077
Ph (02) 476-5854 Fx (02) 476-3231
The Alert 110 is an over
temperature alarm that warns
of inadequate cooling before
damage occurs to a computer.
It sets off an alarm when the internal temperature reaches 43°C
(110°F), allowing the user to shut
the system down before damage
occurs. It is simple to install, only
requiring to be plugged into a spare
power connector. It is fixed inside the
lid of the case with double-sided tape.
Three versions are available: with
over temperature alarm; with over
temperature and cooling fan failure
alarm; and the TwinAlert with over
broadcast quality
connected to a PC via an IEEE-488
interface. An RS-232 interface is also
available and Windows-based Component View software will shortly be
available.
For further information contact
Philips Scientific & Indus
trial, 34
Waterloo Rd, North Ryde, NSW
2113. Phone (02) 888 8222; fax (02)
888 0440.
Instrumentation
CD-ROM is free
National Instruments has announc
ed a free CD-ROM containing information for engineers with an interest
in measurement and control applications. The Windows-compatible CDROM, entitled “Instrupedia”, features
more than 60 tutorial and application
KITS-R-US
PO Box 314 Blackwood SA 5051 Ph 018 806794
TRANSMITTER KITS
$49: a simple to build 2.5 watt free running CD level input, FM band runs from 12-24VDC.
•• FMTX1
FMTX2B $49: the best transmitter on the market, FM-Band XTAL locked on 100MHz. CD level input 3
stage design, very stable up to 30mW RF output.
$49: a universal digital stereo encoder for use on either of our transmitters. XTAL locked.
•• FMTX2A
FMTX5 $99: both FMTX2A & FMTX2B on one PCB.
FMTX10 $599: a complete FMTX5 built and tested, enclosed in a quality case with plugpack, DIN input
•connector
for audio and a 1/2mtr internal antenna, also available in 1U rack mount with balanced cannon
input sockets, dual VU meter and BNC RF $1299. Ideal for cable FM or broadcast transmission over
distances of up to 300 mtrs, i.e. drive-in theatres, sports arenas, football grounds up to 50mW RF out.
FMTX10B $2599: same as rack mount version but also includes dual SCA coder with 67 & 92kHz subcarriers.
•
AUDIO
Audio Power Amp: this has been the most popular kit of all time with some 24,000 PCBs being
•soldDIGI-125
since 1987. Easy to build, small in size, high power, clever design, uses KISS principle. Manufacturing
rights available with full technical support and PCB CAD artwork available to companies for a small royalty.
200 Watt Kit $29, PCB only $4.95.
AEM 35 Watt Single Chip Audio Power Amp $19.95: this is an ideal amp for the beginner to construct;
uses an LM1875 chip and a few parts on a 1 inch square PCB.
Low Distortion Balanced Line Audio Oscillator Kit $69: designed to pump out line up tone around studio
complexes at 400Hz or any other audio frequency you wish to us. Maximum output +21dBm.
MONO Audio DA Amp Kit, 15 splits: $69.
Universal BALUN Balanced Line Converter Kit $69: converts what you have to what you want, unbalanced
to balanced or vice versa. Adjustable gain. Stereo.
•
•
••
COMPUTERS
I/O Card for PCs Kit $169: originally published in Silicon Chip, this is a real low cost way to interface
•to Max
the outside world from your PC, 7 relays, 8 TTL inputs, ADC & DAC, stepper motor drive/open collector
1 amp outputs. Sample software in basic supplied on disk.
PC 8255 24 Line I/O Card Kit $69, PCB $39: described in ETI, this board is easy to construct with
•onlyIBM3 chips
and a double sided plated through hole PCB. Any of the 24 lines can be used as an input or
output. Good value.
19" Rack Mount PC Case: $999.
•• Professional
All-In-One 486SLC-33 CPU Board $799: includes dual serial, games, printer floppy & IDE hard disk drive
interface, up to 4Mb RAM 1/2 size card.
PC104 486SLC CPU Board with 2Mb RAM included: 2 serial, printer, floppy & IDE hard disk $999; VGA
•PC104
card $399.
KIT WARRANTY – CHECK THIS OUT!!!
If your kit does not work, provided good workmanship has been applied in assembly and all original parts
have been correctly assembled, we will repair your kit FREE if returned within 14 days of purchase. Your
only cost is postage both ways. Now, that’s a WARRANTY!
KITS-R-US sell the entire range of designs by Graham Dicker. The designer has not extended his agreement
with the previous distributor, PC Computers, in Adelaide. All products can be purchased with Visa/Bankcard
by phone and shipped overnight via Australia EXPRESS POST for $6.80 per order. You can speak to the
designer Mon-Fri direct from 6-7pm or place orders 24 hours a day on: PH 018 80 6794; FAX 08 270 3175.
90 Silicon Chip
temperature alarm at 43°C followed by
system shutdown at 48°C. The Alert
110 is priced at $32.50 plus sales tax
while the other versions are priced at
$52.50 plus sales tax.
For further information, contact
Hypec Technology Group, PO Box 438,
West Ryde, NSW 2112.
notes on computer based systems for
instrument control, data acquisition,
analysis and presentation.
Also featured are more than 500
hardware and software products for
20 industry standard computers.
For more information, contact Nilsen Instruments Australia Corporation,
PO Box 466, Ringwood, Vic 3134.
Phone (03) 9879 9422.
Micro inspection camera
with light source
How many times have you
wished you had a tiny CCD
camera so you could look
into inaccessible places in
equipment, down pipes or in
cavity walls. Now there is the
Dyna Image DM 340C micro
head CCD video camera which comes with a 3m
cable. This has an illuminated head and is fitted with
a 5mm focal length F5 lens. This has a 38mm best
focus and a minimum working distance of 15mm.
Magnification on a 14-inch monitor is about seven
times. Illumination is provided by built-in LEDs
which may be switched off. A 12mm diameter 45°
mirror adaptor is available for side viewing.
The DM340C consists of a main case which connects to the CCD sensor/lens head via a 5mm dia
meter 3-metre long cable The camera head is 12mm
in diameter and 50mm long. Power requirements
are 12V DC at 160mA, rising to 240mA with the
LEDs on. The video output is 1V p-p standard CCIR
composite video at 75-ohm impedance.
For further information, contact Allthings Sales &
Service, PO Box 25, Westminster, WA 6061. Phone
(09) 349 9413; fax (09) 5905.
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