Top new questions this week:
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I posted a few days about ago how our product failed ESD testing. Well, it also failed radiated emissions testing so I thought I’d make a separate post. The product is a 5V USB powered, non-radio, 3v3 …
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Our product failed ESD during precompliance. Specifically, 4 LEDs got zapped, six times each (3 positive and 3 negative charges), during an 8kV air-discharge test, causing permanent damage to the LEDs …
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I have a new piece of electronics (a small amplifier.) It runs off six AA batteries, giving 9V. What are the practical issues in rewiring it and replacing those with a few 9V batteries in parallel? …
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Looking at the Wikipedia page on TMDS (Transition-minimized differential signaling), I see a triangle symbol with one input and two outputs. I believe this sends the serial signal with its negative …
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I am trying to get a deeper understanding of how transistors actually work so I can design my own circuits around them. Pictured is an LTspice simulation of a simple voltage follower circuit. I do not …
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I assembled a homopolar motor based on YouTube videos. I got it to work like you see in the videos, but also slightly burned my fingers in the process. After “turning off” the motor (i.e. …
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I see numbers about the lifespan of solar panels in units of years, but that got me wondering: Is the lifespan of a solar panel dependent on actual power generation, or just a finite number from the …
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Greatest hits from previous weeks:
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Just a general electronics question: What is negative voltage, like -5 Volt? From my basic knowledge, power is generated by electrons wandering from the minus to the plus side of the power source (…
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I want to add a real time clock module into my little project. I want to display both time and date on my existing i2c 2×16 LCD module. Both i2c-interface real time clock module and 2×16 LCD module …
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How can I save data retrieved from a sensor to a text file on the computer?
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I have built my own board with STM32F7-45VGT6. I have successfully programmed it with ST-LINK v2 (not the original one though) and now I cannot even connect with MCU. I use ST-Link Utility from ST …
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I have gone through various sources… But I am not quite sure what it is.I want an and gate and the logical equivalent is two inputs feeding to one gate and for Y=AB’ the logical equivalent is …
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What is the Q-point of a transistor? Why it is needed? How can we set this Q-point of transistor? Please explain it as I am having difficulty understanding this concept.
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The official page of Wikipedia mentions that reverse saturation current is a part of minority current caused by the drift of charges. I am really confused about this. In class, we have been taught the …
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Can you answer these questions?
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I have made experience with sim 800l, it works like a charm. Now I got a new SIM900A module, interferencing it with (RP over python), AT command returns ok, and other basic AT commands, so not the …
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I’m transmitting analog audio signal from BM20 bluetooth module (it has single ended audio out L + R), to amplifier TPA3118D2. I wish to add two TRS 1/4 balanced audio output jacks (separate for L and …
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The specs: The electromagnet has 7,2 cm of height, 1 cm of radius. A hole with 2,5 mm of radius in the middle. An aluminium foil has 0,024 mm of height so I assumed the insulator layer has the same …
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