Precision Current Source : Part Two

While working with precision sources, we have to consider its accuracy over its full usable temperature range. We will discuss potential ways of minimizing temperature drift due to trimmer potentiometer (POT). The accuracy of the current output depends on the values of the resistor ratio formed by the resistors. But using a trimmer potentiometer, we can overcome the total errors…

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Precision Current Source : Part One

Most of us find ourselves in a situation where we need a precision current excitation source for one or the other sensors. The easiest way to have that is to use an ADC with a built-in current source. In these ICs, an internal voltage source generates the excitation currents. ADC measurements use the same reference voltage. So the drift in…

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Update & Upcoming Projects

Ah! 2020 is coming to an end, finally. And I am back with update on my upcoming projects. It has been an exhausting year full of uncertainty, stress, and anxiousness. We all have plowed through it. As you may have noticed, there haven't been any posts since September. There are many reasons for it tough the most interesting one has…

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Design Tips: Setup Quick Search for Electronics Components

Often the most time-consuming task we do as an electronics design engineer is searching for the right components. Here 'time-consuming' doesn't mean unproductive. Finding the right parts for the task is half the battle. And finding the right parts at the perfect price can make or break your product. But is there any way to optimize this process? Today, I…

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Design Tips: Use Peripherals where ever possible (Rotary encoder with STM32)

When it comes to embedded systems, the most important thing is the execution time required for your main loop. It determines your system's responsiveness and power consumption. To drive that point home, today, we will see how to interface a rotary encoder to an STM32. And shorten the time spent in the control loop by using peripherals. Tip: Use microcontroller's…

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