Top new questions this week:
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I am going to use aluminum bus bars in a high-current PCB. What is the best technique to establish contact between the PCB and the bars? I plan to make my own bars. The current is generally going to …
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I’m trying to reproduce in LTspice the switching response of a push button with bounce effect as shown on the second page of the SN015 Support Note by Würth Elektronik. Here is an excerpt: What I …
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I long ago used a tool in a workshop which looks very like a metal tweezer but unlike a tweezer its holder arms are normally tightly closed and opens when one pushes it. So it was used to hold lets …
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Say I had a component with a resistance of 100 Ω, and I attached a 12 V power supply across its terminals using: a thin wire a thick wire Would the component in both cases really draw (12 V/100 Ω) A?…
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I am currently looking at a layout and I have a trace which has to sustain this current waveform (single pulse) according to the simulation: As you can see, the current is passing through the trace …
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I have come across these two app notes: Coil Suppression Can Reduce Relay Life Application of Coil Suppression with DC Relays Both of them agree on the fact that a common diode + Zener diode in …
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I purchased some common-mode chokes and the documentation provided states: As this pinout does not correspond to other chokes of the same format, I have doubts about the position of the dots (pins 1 …
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Greatest hits from previous weeks:
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I’ve met many projects in which an AVR microcontroller uses with a bootloader (such as the Arduino), but I don’t understand the concept very well. How can I make a bootloader (for any microcontroller)…
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Power supplies are available in a wide range of voltage and current ratings. If I have a device that has specific voltage and current ratings, how do those relate to the power ratings I need to …
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I understand that the output voltage is determined by the ratio between the two resistor values, and that if the both resistors are same then output voltage will be exactly same for all; but what’s …
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In an NMOS, does current flow from source to drain or vice-versa? This Wikipedia page is confusing me: en.wikipedia.org/wiki/MOSFET The above image confuses me. For the N-channel, it shows …
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This may seem like a very simple question, but I’ve searched all over the place and haven’t found an answer. When jumping a car, we connect the + end of the charged battery to the + end of the dead …
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I was just watching a mega factory video and wondered why they use an AC motor which requires a power inverter instead of DC which may be powered directly from their DC battery? Introducing an …
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I am connecting up an AC motor and was wondering if this labeling system was representative of something? Or just another set of letter like X,Y,Z? I could not find any information regarding this in …
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Can you answer these questions?
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In this question: Why usb to serial port converter can’t program avr microcontroller? Cornelius claims: “DTR and RTS are the only pins of the serial port that can be bitbanged.” But is that …
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I have some GPS modules laying around and I noticed they’re pretty different size to each other. (here are two of them for example): So doesn’t any antenna have to be a specific size for a given …
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My project is to place a laser dust sensor to detect PM2.5 and an NDIR gas detector on a drone to measure air quality. My understanding is that these sensors work by shining a laser through a channel …
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