Uploaded January 2017 | Updated September 2026, 1 week ago
The parasitic capacitance of every imductor limits it´s usability as a filter. It even behaves like a resonant tank-circuit at the so-called self-resonant frequency.
Support Roger on Patreon: patreon.com/kainkalabs
Roger explains an easy way of measuring the parasitic properties of an inductor with just a square-wave generator and an oscilloscope, even an "old" analog one.
No special test equipmet required :-)
The parasitic capacitance of every imductor limits it´s usability as a filter. It even behaves like a resonant tank-circuit at the so-called self-resonant frequency.
Support Roger on Patreon: patreon.com/kainkalabs
Roger explains an easy way of measuring the parasitic properties of an inductor with just a square-wave generator and an oscilloscope, even an "old" analog one.
No special test equipmet required :-)
![Every maker should have…[Pt.25]…an IR Thermometer](https://i.ytimg.com/vi/wol957PJScQ/mqdefault.jpg "Every maker should have…[Pt.25]…an IR Thermometer
The poor-man´s Infrared Imaging-Camera :-)
Roger explains how an electronic Infrared-Thermometer (or Pyrometer) works and what traps there are when taking measurements with them.
Why is a high Spot-to-Distance ratio of the IR-lens important?
What is the optical parallax of the laser-pointer?
What is the emissivity-factor and when can it give false measurements?
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