Free Elektor Circuit – Acoustic IR Remote Control Tester
Test/Measurements

Free Elektor Circuit – Acoustic IR Remote Control Tester

In this circuit we use the output signal from a standard IR receiver (IC1 in the schematic of Figure 1) to drive a miniature loudspeaker. The IR receiver from Vishay used here is available for various frequencies ranging from 30 to 56 kHz. A large number of IR remote controls operate...

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Keithley SMUs emulate classic curve tracers with new software
Test/Measurements

Keithley SMUs emulate classic curve tracers with new software

Tektronix brings many of the key features loved in classic curve tracers to Keithley SourceMeter source measure units (SMUs) with the release of its Keithley I-V Tracer software. Tektronix introduced the industry’s first curve tracer in 1955 to display characteristic curves for vacuum...

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Homemade Injection Transformer for PSU Loop Analysis
Test/Measurements

Homemade Injection Transformer for PSU Loop Analysis

Adil Malik build his own injection transformer to test switchmode power supplies in his lab. He writes: Recently, I have been designing some SMPS and required some hardware to measure the actual loop response of the complete converters. People familiar with this area will probably know...

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8 GHz Sampling Oscilloscope for experiments
Test/Measurements

8 GHz Sampling Oscilloscope for experiments

A basic open-source multi-GHz sampling oscilloscope for experimenters on a budget. Still a work-in-progress, with key pieces on separate PCBs, but showing bandwidths in the 7-8 GHz range with >= 100 GSa/s equivalent-time sampling, and around 500 k comparisons/second real time. by Ted...

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The Probe-Scope Is a 60MHz 250Msps Oscilloscope That Fits in Your Hand
Test/Measurements

The Probe-Scope Is a 60MHz 250Msps Oscilloscope That Fits in Your Hand

After the release of his PIC32MZ EF based 20Msps oscilloscope with an integrated 1-inch by 1-inch OLED screen for readouts, Electrical Engineer, Mark Omo has again unveiled his new design, the self-contained 60MHz 250Msps Probe Scope oscilloscope with the probe in cable form factor. The...

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Low cost high accuracy STM32 FFT LCR meter
Test/Measurements

Low cost high accuracy STM32 FFT LCR meter

Adil Malik made a low cost FFT LCR meter with an STM32 MCU: The approach I took was a mixed signal one where a capable analog front end would be paired up with a beefy DSP processor to compute the Impedance. Most importantly, in this scheme, the DSP is responsible for discriminating...

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Free Elektor Article: Voltage Tracker for Oscilloscope
Test/Measurements

Free Elektor Article: Voltage Tracker for Oscilloscope

Original publication: Elektor magazine November 2016 Author: Kurt Schuster Free download expires: Friday 23 August, 2019. Suppose you want to measure a slowly-varying voltage from a sensor, or perhaps plot the discharge curve of a battery. Is it really necessary to sit there and note...

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Free Elektor Article: Improved Radiation Meter
Test/Measurements

Free Elektor Article: Improved Radiation Meter

Author: Burkhard Kainka All that’s required to measure radiation is a simple PIN photodiode and a suitable preamplifier circuit. We present here an optimised preamplifier and a microcontroller-based counter. The microcontroller takes care of measuring time and pulse rate, displaying...

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