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Using A Wideband O2 Sensor In Your Car, Pt.2
19 October 2009
Last month, we introduced our new Wideband Oxygen Sensor Controller and described the circuit. This month, we show you how to build it and give the test and installation details.
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Review: The FLIR i5 Infrared Camera
17 October 2009
FLIR Systems' new i5 camera is a compact handheld instrument weighing only 340g. You just aim and shoot with it and the result is a false colour picture showing the temperature gradients of a building, machinery, electrical equipment, a human body or whatever. You can use it as a precise non-contact thermometer which will also show the full temperature range of everything in the camera's view.
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Circuit Notebook
15 October 2009
Interesting circuit ideas which we have checked but not built and tested. Contributions from
readers are welcome and will be paid for at standard rates.
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Digital Megohm & Leakage Current Meter
13 October 2009
Looking for an electronic megohm and leakage current meter, for quick and easy testing of insulation in wiring and equipment? Here's a new design which allows testing at either 500V or 1000V. It can measure insulation resistances up to 999MΩ and leakage currents to below 1μA. It uses a PIC microcontroller and displays the results on a 2-line LCD panel.
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High-Quality Stereo Digital-To-Analog Converter, Pt.2
08 October 2009
Last month, we introduced our new high-quality Stereo Digital-To-Analog Converter (DAC) and described the circuit. This month, we show you how to build the various modules and make the header cables.
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The Secret World Of Oscilloscope Probes
06 October 2009
Ever wondered how scope probes really work? Most textbooks treat scope probes as a combination of a resistive divider in combination with capacitors to provide an extended frequency response. But as will be revealed, the reality is that they are much more complex in principle. Read on.
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How To Hand-Solder Very Small SMD ICs
02 October 2009
Provided you have the correct tools and a syringe of no-clean flux paste, soldering very small SMDs (eg, TSSOP devices) into place is easier than you think. Here's how to do it.
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Circuit Notebook
25 September 2009
Interesting circuit ideas which we have checked but not built and tested. Contributions from
readers are welcome and will be paid for at standard rates.
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Introducing OLED Displays
19 September 2009
Organic LED technology is now affordable for the hobbyist. In this article, we survey some available OLED screens and modules and give an example for a simple oscilloscope.
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3-Channel UHF Rolling-Code Remote Control, Pt.2
17 September 2009
Last month we introduced our new high security remote control and got as far as completing both the receiver/relay driver and transmitter. This month we'll put it all together and get the two parts talking to each other - securely!
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