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SemTest: A Discrete Semiconductor Test Set; Pt.3
20 May 2012
Now that we have looked at the full circuit of our new Discrete Semiconductor Test Set, it's time to describe its construction and
the setting-up procedure. We also describe how to fit a crowbar circuit to quickly discharge the HT after making high-voltage measurements.
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1.5kW Induction Motor Speed Controller, Pt.2
16 May 2012
Last month, we described the features of the 1.5kW Induction Motor Speed Controller and explained in detail how it works. This month we describe its construction and testing and give some guidelines for use.
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High-Temperature Thermometer/Thermostat
11 May 2012
Need to measure or control temperature over a very wide range? Now you can do it with this compact unit which hooks up to a K-type thermocouple. It drives a relay which can be used to precisely control the temperature in ovens, kilns, autoclaves, solder baths or at the cold end of the spectrum, fridges and freezers. It is based on an Analog Devices AD8495 precision instrumentation amplifier with thermocouple cold junction compensation.
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PIC/AVR Programming Adaptor Board; Pt. 1
05 May 2012
Do you frequently program microcontrollers with a serial programmer? Want to streamline the process so you can quickly do virtually any micro? Well now you can! Our new Programming Adaptor Board, in combination with an In-Circuit Serial Programmer (ICSP), allows you to program most 8-bit & 16-bit PIC microcontrollers as well as 8-bit Atmel AVRs. It has a 40-pin ZIF socket and is configured with just a few DIP switches.
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SoftStarter: Taming The Surge Current Menace!
13 April 2012
Are you alarmed by the juicy "splattt" from your mains power point when you plug in something like a large plasma TV set? Do you some-times burn out light and power point switches because of the surge currents at switch-on? Or perhaps you occasionally trip circuit breakers because of appliance switch-on surge currents. This is a very common problem but there is a simple cure: our SoftStarter. It tames those nasty surge currents while having no effect on appliance performance.
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1.5kW Induction Motor Speed Controller, Pt.1
03 April 2012
You've asked for it many times and we have always said NO! It's too complex, too difficult, too expensive, whatever. Now we're saying YES. This Induction Motor Speed Controller is suitable for motors up to 1.5kW (2HP) and can be used to control speed over a wide range. It will save big dollars with swimming pool pumps and will be great for running machinery at different speeds. Even better, it will control 3-phase motors as well!
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