A follow up to the previous video on repairing the heater. A viewer asked how the capacitor diode rectifier gave a 24V output. The key is in the zener regulator, so this vidoe looks at how mains powered zener voltage regulators work, and their limitations. X class capacitor and self …
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A heater that doesn’t heat up should be an easy and quick repair, right? RIGHT? This Arlec space heater also has a rather dodgy and product recall worthy dangerous construction! 00:00 – Arlec space heater 03:20 – PRODUCT RECALL TIME! 05:12 – Heater element measurement 07:31 – PCB inspection 11:31 …
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Are solar powered electric cars viable? Let’s look at the Lightyear Zero solar powered electric car and examine the claims. Can you get a useless extended range by adding solar panels to an electric car? Dave just so happens to drive a solar powered electric car, so let’s find out! …
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Is your calculator WRONG? It could be! Looking at the issue of implied multiplication and how it can affect your calculations. Why do some Casio and TI calculators give a different result to others? And why do they differ from your phone calculator, google calculator, or Wolfram Alpha? How Order …
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Testing the new Tektronix 2 series waveform update rate vs older Keysight, Siglent, and Rigol scopes, and a glitch signal demonstration on how it matters in the real world. And also how to measure the waveform update rate on your scope. This is not a review, and was going to …
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A world exclusive teardown of the new generation Tektronix 2 Series MSO bench/portable oscilloscope! An innovative new design form factor you’re either going to love or hate! This is the upgrade to the 15yo MSO/DPO 2000B series to give a low end on the next generation 2/3/4/5/6 series. Youtube: Odysee: …
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Teardown of the Keithley 515A Megohm Wheatstone bridge, plus a tutorial on how Wheatsone bridges work and their applications. Manual & Schematic: https://download.tek.com/manual/515A(Model515A).pdf 1960’s Daven precision resistor and attenuator catalog: http://www.technicalaudio.com/pdf/Daven/Daven_attenuator_switch_lab_Catalog.pdf 00:00 Keithley 515A Megohm Wheatstone bridge 03:50 – The Magic smoke test 04:00 – Zero check test 04:40 – …
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Answering another viewer question. Can we identify or find an alternative for this SMD part? https://twitter.com/PoiSolutionsLLC/status/1529065036433571840 Forum: https://www.eevblog.com/forum/blog/eevblog-1475-smd-part-indentification-substitution-search/ Youtube: Odysee: Podcast: Download
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Can you measure capacitors in-circuit with an LCR meter? Forum: https://www.eevblog.com/forum/blog/eevblog-1473-how-your-lcr-meter-works/ Youtube: Odysee: Podcast: Download
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How an LCR meter works. Forum: https://www.eevblog.com/forum/blog/eevblog-1473-how-your-lcr-meter-works/ Youtube: Odysee: Utreon: Podcast: Download
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How to solve the resistor cube problem using equipotential nodes, short and open techniques, and circuit simplification. Twitter: https://twitter.com/engineers_feed/status/1519561534787051521 Forum: https://www.eevblog.com/forum/blog/eevblog-1472-resistor-cube-problem-solved/ 00:00 – The Resistor Cube problem 04:28 – The SECRET to circuit simplification using equipotential nodes 06:04 – Analysis “by inspection” 14:22 – Summary of the solution 16:14 – …
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What’s in the Mailbag? SPOILER: 00:00 – Mailbag 00:41 – Laser etched Delorean Time Machine https://momentsetchedintime.com.au/ 03:29 – Encryption Class C wall mount rack cabinet 05:30 – Russian multimeter with a most UNUSUAL range switch! 08:44 – Smell’o’vision 11:51 – Bob Widlar PCB plaque 15:16 – How to get 5 …
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Complex numbers are NOT complex! How complex numbers are used in AC circuit analysis. 00:00 – Complex Numbers 00:44 – Phasor graphical addition 01:22 – Why do calculators have the R-P and P-R buttons? 02:44 – Phasor diagram 03:59 – The AC voltage equation 04:47 – The complex plane and …
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Part 2 of the AC Basics tutorial series. What are phasors and doing phasor addition. In-phase, out of phase, and leading and lagging waveforms. Phi vs Theta phase angle. Leading into complex numbers in Part 3. 00:00 – AC Basics Theory 00:40 – How an AC waveform is produced 01:37 …
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A walk around the 2022 Electronex show in Sydney. 00:00 – Electronex 2022 01:13 – Phoenix Contact 01:38 – Tektronix 03:14 – Siglent 04:37 – John South at Emona + New Rigol StationMax Oscilloscope 07:38 – Harbuch Electronix isolation transformers 09:38 – Mantis remote 3D viewing microscope 12:05 – SMCBA …
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