Top new questions this week:
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If I understand correctly: The resistance of some circuit components (like diodes) depends on the voltage across them. When two components are connected in series: \$\frac{V1}{V2} = \frac{R1}{R2}\$ …
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Is there a technical reason why sensors output goes from 0.5 to 4.5V (analog) or 10% – 90% (digital)? I understand that for diagnostic purpose one doesn’t normally want to use the full range …
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I understand that when an IC pin is in a high-impedance state, the pin is not connected to anything internal. It will be at the voltage to whatever it is being pulled from the outside. I am just …
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What battery chemistry would be most suitable for an application where the cells are expected to sit a very long time, say 100 years, disconnected, with minimal self discharge? Assume the storage …
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For the purposes of experimentation and learning, I have constructed a circuit that uses a pair of 100 ohm 2 watt power resistors (in parallel for 50 ohms) to gently warm up a Microchip MCP9701A …
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For the below DC circuit, does the 1Ω resistor in the middle have an effect on the equivalent resistance? If it does, how would you calculate the equivalent resistance? The rules for series and …
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I want to organize some components and wiring for power distribution for a small solar panel. Voltages up to about 24 VDC, and currents up to about 3 amps. Components inside will include switches, …
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Greatest hits from previous weeks:
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Flash memory storage and EEPROM both use floating gate transistors for storage of data. What differs between the two and why is Flash so much faster?
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Is there any way to tell the difference between a slow blow and a fast acting Fuse? I had one blow in my amp and I know its 125v 5a, but i’m not sure if it is a slow blow or fast acting fuse. Is …
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What is the difference between “forward” and “reverse” voltages when working with diodes and LEDs? I realize this question is answered elsewhere on the interwebs such as wikipedia, but I am looking …
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Spring cleaning, and I’m trying to get power supplies for all my devices with missing power supplies. They’re all the typical barrel power connector, and I’m having a dickens of a time trying to …
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What is a decoupling capacitor (or smoothing capacitor as referred to in the link below)? How do I know if I need one and if so, what size and where it needs to go? This question mentions many …
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Why do you need to store the voltage for some time in a capacitor? I’ve always assumed circuits to work when you power it on and stop when you power it off. Why can’t the whole circuit be drawn …
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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’m trying to design a half-bridge SMPS. However not able to get the desired output. My doubt lies in the transformer sizing and it’s implementation in LTspice. Specs: Vs=220 V RMS AC Desired DC …
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I’ve created a circuit (schematic below) to measure humidity with a HIH-5030 according to its datasheet and an ATtiny85 and tested it on a breadboard, the readings are very accurate. Soldered on a …
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As a follow-up question to my previous question regarding a circuit that passes voltages above 17 V, I wanted to be sure how to connect output of the solution circuit to my application. The output is +…
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