Top new questions this week:
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I’m trying to build a unity gain push-pull output stage to drive a small ~8 Ω speaker (measured DC resistance at 7 Ω, I don’t have a datasheet for it). This is for use with a single rail battery …
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I was reading the datasheet of a digital multimeter (DMM) and I came across a resistance value terminated with 3/4, like so: You can find it at the bottom of page 1-3 of the this document. What does …
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I’m wondering what the simplest design for a general-purpose (Turing complete) computer is. To my surprise, I haven’t found much on the web. Surely this is a known problem?
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I have a Lenovo p620 machine and I’m trying to swap out the terribly loud fans with Noctua PWM fans. The problem is the 2 chassis fans are using a weird 4-pin connector where the ridges are on the far …
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The dielectric constant of air is approximately 3 kV/mm. The typical space between car spark plugs is between 0.6 and 1.8 mm. By multiplying those numbers in mm by the dielectric constant of air, we …
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I’ve been working with transfer functions and control models for a while, but I never really have gotten an intuitive understanding of what the poles and zeros of a system really represent. I was …
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I’m trying to replace a PCB, but I can’t figure out how to unplug these connectors. They seem to be a “quick connect” style. I’ve tried tugging on them and wiggling them, but they won’t come …
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Greatest hits from previous weeks:
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In this heavily upvoted answer the answerer states that it is okay to supply a component with more current than what it’s rated for. The analogy is that (paraphrasing here) “If Johnny wants to eat two …
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I know the reasons for using terminating resistors on a CAN bus and how important it is. But why 120 ohm? How did this value come up? Is there any specific reason to use 120 ohm?
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Mini USB connectors were standardized as part of USB 2.0 in 2000. In 2007, the USB Implemeters Forum standardized Micro USB connectors, deprecating Mini USB connectors four months later. Why? What …
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I am relatively new here and I am confused as to the difference between Vrms and Vm. I would be obliged if someone can explain. (This in relation to 3-phase circuits would be even better) My shot at …
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I’m am having issues with my USBasp programmer (Windows 10). I installed the WinUSB driver using zadig 2.4. When I run AVR dude with the following parameters …
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I am confused with this! How does a capacitor block DC? I have seen many circuits using capacitors powered by a DC supply. So, if capacitor blocks DC, why should it be used in such circuits? Also, …
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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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Can you answer these questions?
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I am trying to fix a controller that manages a string of lights. The input and output voltages are 24 V. The output voltage seems to vary slightly in order for the lights to change colors based on the …
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In current design I have ADS114S08 on SPI and LSM6DSO32TR on I2C. However I am short of MCU pins and IMU is capable of 10MHz SPI too. The only problem is that ADC chip only supports mode 1 (CPOL = 0, …
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I’m designing some boards for an industrial application. Basically, these are boards that verify the correct functioning of some power supplies (they measure the output voltage and check some POK …
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