Unanswered Questions
29,153 questions with no upvoted or accepted answers
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I am running 10Kva alternator from 10hp motor need to ask some explanation
So here is my equipment
I am using solar controller to run motor which runs alternator which generates electricity and which is used for my house 🏡 requirements.
10 Kva single phase 220v 50hz @...
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What is the correct formula for the 3db frequency of an RC or LC Circuit?
Before we jump to another post where the formula is
I am reading through the text book Microelectronic Circuits 8th edition by SEDRA/SMITH. In the text, they show this table.
Here it shows the time ...
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Boost Converter Output Isn't Desired Value
I used the MIC2619 switching regulator for a boost converter application which takes +5V and outputs +12V. After assembling the circuit, the output voltage is only +4.8V. The schematic of the circuit ...
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What are the footprint dimensions for a GX-16 8-pin ("aviation") connector?
I would like to make through-holes in a PCB to mount a GX16 8-pin connector. I have looked everywhere but cannot find a source for the pin dimensions---and they are not consistent. I've measured with ...
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Help with Connector
I just found this site and was hoping someone can help me out. I'm looking for the empty connector in the pics. This is for a Ford truck 3rd brake light.
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Do I need a new multimeter, mine seems to be reading double what the DC volts should be
I was measuring my car battery, which works fine, as a test and my multimeter read 26 volts. Not sure if I'm reading it wrong, or if it just likes to double volts to make me happy. It's a GMT-312 from ...
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Measuring BLDC Motor Speed with Angle Feedback
I am trying to implement FoC for a BLDC motor. I have a dedicated control board(STM32H7) that receives current and angle feedback, but I'm having trouble figuring out how to measure the speed from the ...
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W25Q16JV and XIP/continuous mode support (for RPi Pico)
My RPi Pico embeds a W25Q16JVUXIQ. Based on its datasheet, it does not support DTR or "continuous read mode" (which should allow reading without sending the command byte, by setting the M7-0 ...
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In a type 1 PLL will the output and input have phase difference after phase is locked?
Regarding XOR based type 1 digital PLL, I can see that after the phase-locking the output freq. and the input freq. will be same.
But how about the phase? Will the phase difference be zero or? I ...
- 407k
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PIC16F26K83 ADC reading and LCD interface
I'm very new to PIC programming and I need help figuring out why the LCD doesn't show the second row. The shematic and code comes from this repository; https://github.com/PeacocksFly/PIC18-Projects-...
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Help to configure an LTspice PLL simulation
I never tried PLLs before and to gain some insight I'm trying to simulate CD4046Bg in LTspice where I want the output to phase-lock and follow the input signal. I tried so far the below:
But I get an ...
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Servo moving to limits randomly
I've seen a very similar question to this but want some extra pair of eyes on my circuit here.
The issue I've encountered is on startup of this script every so often the servos will randomly move to ...
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How should I apply FACT technique on this circuit?
I am learning the fast analytical circuit technique. How could I calculate the pole in the circuit below? I also calculated in the "traditional" way.
I was able to determine the zero and ...
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RBL43P transistor
I have a circuit with transistor with marking: RBL43P that needs replacement. All search for datasheet was unsuccessful. Voltage to the supposed base of the transistor is about 33 volts.
Does anyone ...
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Is my lead acid charging circuit fine?
I would like to ask for review in my schematic circuit for charging lead acid battery with following data:
6 cells per unit (1.75 V per cell), float charging voltage between 13.7-13.9 V, maximum ...
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