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PRODUCT SHOWCASE Electromagnetic compatibility test system The Schaffner BEST 96 EMC test system combines all neces­sary functions for full compliance testing of residential, com­ mercial and light industrial electrical and electronic products. The BEST 96 system comprises a multi-function generator providing burst, electromagnetic discharge (ESD), surge and power quality pulses (for single-phase power line and data line compliance), a ground plane, cables, ground strap, grounding resistor and cou­pling clamp for data line testing and a step-by-step instruction manual. BEST 96 provides a universal interface/coupler into which the product-under-test is plugged in and preprogrammed tests using “built-in” test pulses are then run. The testing procedure has all signal functions controlled from the BEST 96 front panel or alternatively, from a PC using Windows-based software. For further information, contact Westek Industrial Products Pty Ltd, Unit 2, 6-10 Maria St, Laverton North, Victoria 3026. Phone (03)9369 8802 or Fax, (03)9369 8006. 1GHz RF spectrum analyser The new Laplace SA1000 1GHz Spectrum Analyser is control­lable by any PC capable of running under Windows and is suitable for in-house EMC testing. Frequency coverage is from 20kHz to 1.1GHz with selectable start and stop frequencies and logarithmic or linear scaling. The single frequency mode of the instrument permits true averaging and quasi-peak measurements which can be plotted against time to enable the monitoring of trends and excursions as required by EMC standards for fluctuating emis­sions. The software package (EMC En80  Silicon Chip gineer) also provides other important capabilities including antenna factor compensation; background nulling; multiple trace comparison; and limit line display for common EMC standards. The SA1000 has very high sensitivity to low field strengths down to less then 17dBµV/m (when used with the Laplace broadband antenna). An inbuilt calibration source confirms the operation and accuracy of the analyser. An audio modulator and internal loudspeaker are also provided. The demodulation technique is suitable for both FM and AM signals. For further information, contact Nilsen Technologies, 150 Oxford St, Collingwood, Vic 3066. Phone (03) 9419 9999; fax (02) 9419 1312. STEPDOWN TRANSFORMERS 60VA to 3KVA encased toroids Westcode power semiconductors A broad range of Westcode Semiconductors (UK) Ltd’s devices is now available in Australia. They include thyristors, distrib­uted gate (fast turn off) thyristors, high frequency thy­ ristors, diodes and fast recovery diodes. These devices can be supplied, mounted within insulated base modules such as the WK250 series and are available in double thyristor, thyristor/diode, diode/thyristor and double diode arrangements. Westcode semiconductor assemblies feature a choice of integral water-cooled and air-cooled packages. The compression mounting technology in conjunction with ceramic device packaging ensures excellent hermeticity and heat conduction properties while maintaining high electrical isolation (withstanding voltage of 2.5kV RMS). Devices available have peak reverse voltage ratings ranging from 500V to 1700V at a junction op- Harbuch Electronics Pty Ltd 9/40 Leighton Pl. HORNSBY 2077 Ph (02) 9476-5854 Fx (02) 9476-3231 erating temperature of 130°C. Air-cooled devices can operate at typically 300A (thyris­tors) and 250A (diodes) as measured on half-cycle sinewave average basis and at an ambient temperature of 85°C. Water-cooled devices (eg, an AC diode switch) can operate at 750A RMS (inlet water at 25°C and flow rate of 4.5 litres/min) October 1997  81 Hioki single-phase power meter The new Hioki Model 3330 Power meter covers the range from 30W to 18kW and has an energy range to 999,999 MWhr. The 3330 measures current to 30A without the need for a current transform­ er or shunt. Voltage is measured over three ranges: 150, 300 and 600V. The instrument caters for power measurement on inverters and switchmode power supplies, having a bandwidth from 10Hz to 50kHz. The unit also measures frequency up to 50kHz. An inbuilt comparator function permits adaptation to assembly line operations and automatic testing (ATE) together with optional RS232 and GPIB interfaces. Basic accuracy is ±0.3% and compared to an air-cooled equivalent of 555A RMS at an ambient temperature of 85°C. For further information, contact Westek Industrial Products Pty Ltd, Unit 2, 6-10 Maria St, Laverton North, Vic 3026. Phone (03) 9369 8802; fax (03) 9369 8006. Variable speed motor control ICs Two new ICs from GEC Plessey Semiconductors (GPS) are tar­geted at variable speed motor control applications in white goods, such as washing machines, fan drives in air conditioning systems, water pumps and general purpose industrial inverters. The SA828 3-phase PWM generator IC is designed for use in AC induction motor drive systems. Switching carrier frequencies up to 24kHz allow ultrasonic operation of inverter power switch­es. The power waveform is stored in an on-chip ROM. Two standard waveform options are available: sine plus third harmonic (a means of increasing motor power output for a given line supply voltage to the inverter) or pure sine. Other waveforms can be provided to customer order. The SA828 operates as a standalone microprocessor periph­eral imposing just a small processing overhead on the micropro­cessor as it requires attention 82  Silicon Chip fast response time is 0.4 seconds, making the instrument suitable for transient measurements. For further information contact only if the frequency or ampli­ tude of the output waveform needs to be changed. Any of the popular 4 or 8-bit microprocessor and micro­con­troll­ers can be inter­faced with the SA828. The SA838 is a single phase variant and is available for applications such as uninterruptible power supplies or single phase induction motor drives. For further information, contact GEC Electronics Division, Unit 1, 38 South St, Rydalmere NSW 2116. Phone (02) 9638 1888. Nilsen Technologies, 150 Oxford Street, Collingwood, Vic, 3066. Phone (03) 9419 9999; fax (03) 9416 1312. New instrumentation catalog from Fluke Charger conditioner for nicads Premier Batteries has introduced a single module charger conditioner which uses negative pulse technology to charge and condition nickel cadmium and nickel metal hydride batteries. The charger is supplied with dedicated cup modules to cater for Motorola Saber, Visar, MTS2000, HT600, GP300 and the Bendix King Radio. It has the added advantage of a 12V charger for in-car use. It will charge batteries in approximately one hour and the negative pulse conditioning will maintain the peak charge indefi­nitely, without shortening battery life. For further information, contact Premier Batteries Pty Ltd, 9/15 Childs Road, Chipping Norton, NSW 2170. Phone (02) 9755 1845. Philips Test & Measurement has released the 1997/98 Fluke instrumentation catalog. The 242-page catalog describes the complete range of more than 400 Fluke products including selec­tion guides, accessories and customer support information. It features 19 sections for product categories such as Scope­meters, multi­meters, bench oscilloscopes, timer/counters, generators and network test tools. The catalog is available from Philips Test & Measurement. Phone (02) 9888 SC 0416; fax (02) 9888 0440.