How much math do you need to know to design electronics?

Education for electronics design tends to have a fair amount of math in it but how much is really required nowadays in order to design electronics? You certainly…

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Interfacing and using bridge sensors

Sensors such as strain gauges, pressure gauges and some magnetic sensors are often bridge devices. They can be full or half bridge although the bridges are usually made…

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Supply and Signal Line Filtering

There are many reasons for needing to filter power supply or signal lines. Power supply lines from a switching regulator may be too noisy for sensitive analog circuitry….

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Debugging Serial Interfaces

I often work with embedded, mixed signal systems and while in the past that might have included parallel data with numerous data and address lines, nowadays you are…

The post Debugging Serial Interfaces appeared first on Micro Controller Tips.

Troubleshooting Analog Circuits

While you may need to troubleshoot a circuit that used to work and now doesn’t, the emphasis here is how to troubleshoot a design when you have your…

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Keeping Cool

Preventing electronic circuits from getting too hot is not just about cooling but also trying to minimize the excess heat being generated in the first place. For a…

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Using and interfacing to thermocouples

I recently had cause to look again at thermocouples after not having used them for many years.  While they may seem a little old fashioned when you can…

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Specialized Semiconductor Materials

Early semiconductor devices were based on germanium, although there were others around such as selenium used in rectifiers. Germanium doesn’t need to be as pure as silicon for…

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Light Detection and Amplification

A common sensor requirement is to measure light. This may be for adjusting the brightness of a display or for instrumentation where accuracy is of importance and light…

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Ultra low power switching regulators

For micropower applications there are some interesting new devices around for helping power the circuitry. I am not thinking here about energy harvesting applications but low power battery…

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Spread Spectrum Clocks

Digital clocks are everywhere. In fact there are too many clocks around. If you do a quick sweep with a spectrum analyzer, then as well as the frequencies…

The post Spread Spectrum Clocks appeared first on Micro Controller Tips.

Battery Types and Operation

I came across an interesting new product recently which made me realize that I take batteries for granted without actually thinking much about how they work. I know…

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Variable Gain Amplifiers

It is not uncommon to need an adjustable gain in an analog signal processing chain. If the adjustment is manual then it is pretty straightforward – you can…

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Choosing Ceramic Capacitors

It may seem a bit mundane but choosing ceramic capacitors can cause some problems and confusion. Ceramic capacitors have taken over from aluminum electrolytic capacitors and tantalum electrolytics…

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Calculating and comparing amplifier noise

I was recently presented with the problem of comparing the noise of two alternative designs that were presented to me. Normally that wouldn’t take much sorting out –…

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Instrumentation amplifiers

What is an instrumentation amplifier and why do we need them? On the face of it they just look like a differential amplifier using more parts than necessary….

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Level Shifting Digital Logic Signals

In the past digital systems were 5V and analog ones +/-15V or +/-12V. Nowadays analog systems are more likely to be single supply 5V, 3.3V or lower and…

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Understanding opamp input stages

Choosing an opamp and getting the best out of it involves some understanding of what is inside the chip, particularly the input stage. Simple bipolar input stage A…

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Driving High Power LEDs

High power LEDs, particularly “white” ones are becoming increasingly used in commercial products from cars and domestic lighting to street lighting and with efficiencies which can exceed that…

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Starting out with Verilog

If you are from a software background coming into digital design using CPLD/FPGAs (complex programmable logic devices/field programmable gate arrays) then you need to adopt a different way…

The post Starting out with Verilog appeared first on FPGA Tips.

Choosing and Driving Laser Diodes

Laser diodes come in a wide range of types and power. They are in DVD and CD players and writers, used in fibre-optic communications, visible laser pointers, distance…

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Choosing, using and designing oscillators

by Chris Francis Most electronics nowadays has oscillators in it. Digital circuitry needs a clock. Radio frequency signals require an oscillator or clock. Some analogue circuitry also needs…

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Choosing, using and designing oscillators

by Chris Francis Most electronics nowadays has oscillators in it. Digital circuitry needs a clock. Radio frequency signals require an oscillator or clock. Some analogue circuitry also needs…

The post Choosing, using and designing oscillators appeared first on Analog IC Tips.

Noise simulation and analysis with SPICE

by Chris Francis When designing low noise circuits – signal conditioning circuits, amplifiers or analog to digital converter interfaces, for example – SPICE simulation can be helpful in…

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Biasing bipolar transistor circuits

Bipolar transistors used in linear applications need “biasing”, as do other transistors (JFET, MOSFET) when used for linear applications rather than as switches. When used as a “switch”…

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