Top new questions this week:
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I was cleaning out some junk when I encountered an interesting chip. It looks like a remnant from the Apollo space program with its all-metal body with the marking ADC581B 8533 6686. Next to the 8533, ...
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Bought this on Amazon as a dryer 240V SPD. I was trying to find out if this device is an outright scam. I found a similar post on here from several years ago but that did not answer my question. ...
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I found on Wikipedia that:
“In 1901, Reginald Fessenden demonstrated a direct-conversion heterodyne receiver or beat receiver as a method of making continuous wave radiotelegraphy signals audible. ...
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If I know the total charge in a battery, let's say 5000 Ah, and I want to find how much energy is stored in the battery, I multiply the total charge by the voltage E = Q·V; for example, for 12 V I ...
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Does it ever make sense to have both a pull-up and a pull-down resistor on the same trace?
Background:
I'm designing a backplane to follow the OpenVPX guidelines and I saw this rule
Rule 7-20: The ...
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In power supply, each house connected to the grid consumes a certain amount of power which leaves less power to be consumed for the rest of the houses.
Similar to that, when a radio station broadcasts ...
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So I am doing a class on Analog Design. I have to design a two-stage Miller OTA. I would like to have some feedback about my design procedure and also some help because I am stuck. My professor doesn'...
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Greatest hits from previous weeks:
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I want to connect the output from the audio jack of an iPhone to an Arduino.
What voltage range can I expect to see on the audio lines from the iPhone? I assume that turning the volume up on the ...
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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 am confused on the terms Open, Short, and Closed when talking about circuits. As far as I know:
a) Open circuit means the wires are cut off so there will be no current flow, but there is voltage.
b)...
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I was taught that if you want to change the direction of a three phase rotating machine that is rotating in forward direction, you interchange the phases. Since the phases has the same features (...
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I just took apart our washing machine to replace the carbon brushes.
Was wondering why the machine stopped working when the brushes were worn down?
Also if the engine makes a wuring noise after you ...
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Help please, I am new to circuits and decoders and I need some serious help.
How to build a 4x16 decoder using ONLY two 2x4 decoders?
Following the steps we took in the lecture, we are supposed to ...
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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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Can you answer these questions?
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Can I use an ESP32 to program/flash an nRF51822 directly without a PC connected to the nRF?
I am designing a VERY small device with two microcontrollers on the same PCB, and would like to save space ...
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I'm reading my teacher code for FFT windowing in Matlab and there is one thing I don't understand. When you run the code at the end it says:
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I have designed this circuit that outputs 7 or 28 mA depending is the MOSFET is closed or open. The gate of the MOSFET is controlled with an Analog Output from a DAQ that jumps between 0 and 10V.
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