2025: A year in which chaos seemingly thrived
A year back, this engineer titled his 2024 retrospective “interconnected themes galore”. That said, both new and expanded connections can sometimes lead to chaotic results, yes? As any of you who’ve already seen my precursor “2026 Look Ahead” piece may remember, we’ve intentionally flipped the ordering of my two end-of-year writeups once again this year. […]
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Power Tips #148: A simple software method to increase the duty-cycle resolution in DPWM
Have you ever had a duty-cycle resolution issue in your digitally controlled power supply? In a digital pulse width modulation (DPWM)-controlled power supply, the duty-cycle adjustment is not continuous, but has a minimum step. This is one significant difference between digital control and analog control. In order to really understand the resolution issue, let’s look […]
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SCR topology transmogrifies into BJT two-wire precision current source
Recently, frequent Design Idea (DI) author Christopher Paul showcased an innovative and high performance true-two-wire current source using a depletion mode MOSFET as the pass device in “A precision, voltage-compliant current source.” In subsequent comments the question arose whether similar performance is possible using a bipolar junction transistor instead of Christopher’s FET in a similar […]
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Towards Green and Sustainable Supercapacitors
Researchers from Regional Centre of Advanced Technologies and Materials CATRIN Olomouc and VSB Ostrava, Czech republic published a scientific paper describing replacement of NMP solvent used in conventional supercapacitor electrode […] Read the original post at Towards Green and Sustainable Supercapacitors
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Guard circuit provides impedance matching
The first hits from a Google search of the term “guard circuit” produce a series of references to the National Guard on some security circuit. Deep in the list is a printed circuit board company that touts that they design guard rings on critical circuits. So just what are they? Wow the engineering world with […]
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