Newest Questions

Ask Question
213,025 questions
Newest Active Bountied Unanswered
Filter by
Sorted by
Tagged with
6 votes
1 answer
341 views

I build a simple LED chaser that will be powered from a 9 volt battery and will start with a simple slide switch. I have simulated the design in TinkerCAD and it worked the way I wanted. However when ...
BalP's user avatar
  • 63
3 votes
1 answer
102 views

It’s now two weeks that I’ve been trying to tune my self stabilizing two wheeler to stay put, but to no avail. I’ve literally tried everything I could, including endless fine tuning and seeking ...
user656857's user avatar
  • 119
3 votes
1 answer
172 views

I'm trying to route two CAN bus (CAN-H, CAN-L) lines to a single line. To achieve this goal, I'm designing a switch made up of PhotoMOS (model AQY212S or similar). This is the design: simulate this ...
Crazy circuit's user avatar
  • 301
1 vote
2 answers
73 views

I am looking for a way to edit a BOM outside Altium and import it back in. Specifically, I need to add a few fields for every component. Obviously, this can be done individually, editing every single ...
Sergei's user avatar
  • 11
4 votes
2 answers
510 views

I am using a resistor divider of 523 kΩ on the high side and 10 kΩ on the low side. Using an STM32 microcontroller to read the voltage of the supply. How is the voltage actually being converted to ADC ...
Gokul Karthik's user avatar
  • 579
0 votes
0 answers
70 views

I want to design a bridge for CAN to filter unwanted frequencies and improve EMC.What I mean I expect switching noise from nearby inverters / motor drives / PDUs to couple into the CAN interface (...
Pawel Cwikowski's user avatar
  • 11
2 votes
0 answers
82 views

I'm repairing my sailboats autopilot power module (Raymarine SPX10), which among other circuits, also contains a MEMS gyroscope. I discovered that the signal conditioning quad-opamp TLV2264 had failed ...
Pythzepf's user avatar
  • 96
2 votes
2 answers
141 views

I've tried many methods to search for this IC's part number through searching marking, google search, forums, but couldn't find it. This IC is part of photon detection circuit. This IC in my view is ...
Sadiq's user avatar
  • 21
0 votes
0 answers
73 views

Interfacing SD card with STM32 using SPI interface, SD card is 16 GB, and while storing JSON files to SD card it stores up to 50 files in faster rate but after 50-60 files the rate of storing files ...
Shubham's user avatar
  • 1
0 votes
0 answers
59 views

I have been doing some testing with MOVs for surge protection. The MOV I am explicitly going to be referring to is MYG-20K431 in this datasheet. The datasheet refers to this ones voltage protection ...
Ben G's user avatar
  • 93
8 votes
7 answers
1k views

I need to generate three square waves: 40kHz, 60kHz, and 77.5kHz. 40 and 60 are easy enough, but the only common multipliers with 77.5 don't seem to be widely available as oscillators. About the ...
user's user avatar
  • 2,032
2 votes
4 answers
637 views

I wanted to ask about the Miller effect, I've read the info about the Miller effect from three different textbooks and I just still quite don't get it. Most of the textbooks just say and give an ...
Marek Klimes's user avatar
  • 39
1 vote
2 answers
233 views

I have an electric scooter with a throttle that has a momentary power switch (normally open). The throttle hall sensor has three wires +5V, GND and signal. There is one additional wire for the power ...
nocandopdx's user avatar
  • 97
0 votes
2 answers
64 views

I’m using an EEPROM where a Write control pin is present. If it is driven low, write operations are enabled. I want to keep it in low state all the time. However in some applications I’ve seen a 10k ...
glibcrossroads's user avatar
  • 1
0 votes
0 answers
53 views

I need to interface an EEPROM to my microcontroller using I2C interface. I also want to connect an RTC in the same bus. How should I calculate the required pull-up resistor values? As per the EEPROM ...
glibcrossroads's user avatar
  • 1
9 votes
2 answers
864 views

We have a board where the customer wants to be able to pass USB through from one USB-C connector (on the back) to another (on the front) to make plugging in the odd peripheral easier - sounds easy ...
John U's user avatar
  • 7,347
0 votes
0 answers
51 views

I’m trying to digitally control the output voltage of an SZ-08 buck-boost converter by replacing its onboard W204 (3296) CV trimmer with an RP2040-generated PWM signal filtered through an RC network ...
Will Buckneer's user avatar
  • 59
3 votes
1 answer
241 views

Since definitions vary, let's say that a "Zener voltage regulator" is of the simplest possible type: an input voltage is configured across a series combination of a resistor and a Zener ...
Hammdist's user avatar
  • 631
-4 votes
0 answers
90 views

I am three weeks into my first semester at uni and have been given a truth table, and asked to prepare a circuit with the minimum number of gates. This is my attempt at a circuit, I need to reduce the ...
Bob's user avatar
  • 1
0 votes
1 answer
75 views

I am currently working on an stm32-based design. I am trying to understand how to power the stm32 through USB. We came up with the following solution: The idea is that +3v3_power is the main rail of ...
jazam's user avatar
  • 1
0 votes
1 answer
86 views

Im a Computer Engineering undergrad student and would like to think I have a solid foundation of electromechanics, though would appreciate some insight on a few Ideas. Please let me know if this model ...
Rohan Gujral's user avatar
  • 11
2 votes
1 answer
102 views

I am designing a system where I have several daughter boards with voltage or current sensors (several or one on each board). One board is the master with the MCU. Because the system is larger and in a ...
miha medved's user avatar
  • 123
1 vote
0 answers
53 views

I am looking to replace this single beam load cell with a tolerance of 50kg. The load cell height is 6.5cm. Sadly the company no longer provides this load cell. What would be a good substitute for ...
Srs's user avatar
  • 25
0 votes
0 answers
64 views

I want to design a frequency synthesizer with a frequency sweep covering 410-525 MHz. I’m considering several approaches but want advice on real-world practicality: Simple ramp voltage → timer IC → ??...
Abdullah Faran's user avatar
  • 1
2 votes
1 answer
250 views

Let's say I have a 2 later circular PCB with some components on it. Nothing high speed. I want to have ground plane on it with proper stitching. In proposition A, there is a continuous ground plane on ...
Verda Clement's user avatar
  • 55
0 votes
1 answer
119 views

I'm designing a PCB for motor control. But my Proteus is not working and it doesn't show these errors that I don't understand (view last photo).
Sara Bannour's user avatar
  • 11
1 vote
2 answers
448 views

Look at the following circuit: Here the \$VPLUSE\$ has \$50\%\$ duty cycle with \$1ms\$ time period. The upper voltage level is \$10V\$ and the lower one is \$-5V\$. My question is about the plot I ...
M. Saamin Rahman's user avatar
  • 463
0 votes
0 answers
64 views

My question is about calculation of full flag for an asynchronous fifo: rdptr is grey code of read pointer which is synchronized to write clock. Original read pointer increments on read operation and ...
kill time's user avatar
  • 1
0 votes
0 answers
115 views

I’m working on a circuit board for amber strobe units to be used in a car. Each board will feature eight individually addressable LEDs, controlled by an ATtiny microcontroller. In certain ...
Enzio Ardesch's user avatar
  • 33
-1 votes
0 answers
154 views

I am trying to create a high power (29V 18A) constant current source set at 18A, I have found a lot of resources online but I am unsure how to scale from a 10W example source to a 550W (Rounded from ...
Adrole's user avatar
  • 7
2 votes
1 answer
201 views

In a schematic for a flyback converter using TL494CN, I have come across this circuit in the feedback loop: Source GW Instek SPD-3606 from here For completeness here is the other part of the U210 ...
Velibor Simovic's user avatar
  • 307
0 votes
1 answer
141 views

I have an LC filter at the output of my class d amplifier. It uses a 47uH inductor and 1.5uF capacitor with a 4700uF ac coupling capacitor and fuse connected to the input of my speaker.This is the ...
Kyle Owen's user avatar
  • 87
1 vote
1 answer
93 views

I would like to measure the input/output impedance of some circuits from 1 MHz-200 MHz using a nanoVNA. PCB stackup is Sig/GND/GND/+5V, Sig does not have a ground pour on the same layer. Trace width ...
Yousif Alniemi's user avatar
  • 885
0 votes
0 answers
79 views

I am using a bluepill, and the final case statement is looping constantly from GO_TO_TOP -> COME_TO BOTTOM -> ROTATE_ACTION, the 'top' variable is being latched to '1' at the GO_TO_TOP case ...
Samartha Rao HP's user avatar
  • 1
-1 votes
0 answers
113 views

I'm working with a simple RLC series circuit driven by a clean ±1.2 V sine wave generated from an ESP32 DAC and amplified through an MCP6002 op-amp. The analog waveform is confirmed to be stable and ...
Saad Bouarfa's user avatar
  • 1
0 votes
0 answers
42 views

I am designing RF amplifiers, and I often use LDMOS transistors with unmatched inputs and outputs. My goal is to learn how to model and simulate PCB impedance-matching geometry on a computer before ...
Oleksandr Tashno's user avatar
  • 100
0 votes
2 answers
106 views

I have built the circuit shown below: a simple "eurorack" sequencer designed by Moritz Kline (see youtube). It works as expected except for one issue I am trying to understand and correct. ...
Peter Wiley's user avatar
  • 101
0 votes
1 answer
62 views

I'm thinking thorough how I can build a pretty low end logger to read voltage and amperage as part of electrical troubleshooting on some CNC machines. I've managed to knock together a amperage logger ...
Marc's user avatar
  • 11
2 votes
2 answers
329 views

Context: I suspect my old Philips TVs IR receiver broke. TV stopped reacting to remote, sporadically in the beginning, and now permanent. The remote seems to be working fine, checked it using ...
DavWEB's user avatar
  • 141
1 vote
2 answers
167 views

I see multiple internal diagrams for the 555 timer IC. If I consider the following schematic, is the text below correct? (Also is this the correct diagram for the IC?) Author: EEGuide.com. Link: https:...
Deagle's user avatar
  • 41
-1 votes
0 answers
52 views

Hello, I'm working on fixing things Altium has highlighted in the DRC I ran on my PCB, and I can't figure out why I'm getting a Un-Routed Net Constraint error here. I believe C7's GND pad is already ...
under267's user avatar
  • 9
0 votes
2 answers
89 views

Maybe it's very dumb question. But I'm just curious. For example I have On/Off switcher for some LED for indicate that you can start using some device. So this LED turning On from MC and signal rising ...
MrKimler's user avatar
  • 11
-3 votes
0 answers
30 views

I get error when i try to switch from sim1 to sim2 via "AT+SWITCHSIM=1" command @ SIM7672SA How can I fix this, or does the firmware not support dual SIM despite the hardware doing so?
محمد فريد's user avatar
  • 1
-3 votes
1 answer
98 views

I am not familiar with analog computers and have found no reference that systematically discuss how errors may be modeled in an analog computer. An answer or citations are welcome. I am talking about ...
Yuan John Jiang's user avatar
  • 95
-2 votes
0 answers
74 views

I have made alot of progress updates on my flight computer since I last made a post. I have a few questions now after completing my most recent version of the board, but first I will share with you ...
Dominic Bleacher's user avatar
  • 55
4 votes
5 answers
895 views

I remember learning in school that electrical devices work because the wires in them are conductive, so electricity flows easily through them. But some electrical things, like (traditional ...
Michael Atkins-Prescott's user avatar
  • 233
0 votes
0 answers
73 views

I am currently designing a PCB with a STM32H723 MCU that will connect to SD Card through a SDIO Multiplexer (TS3A27518EIRTWRQ1) to SD Card to log data. When I insert a USB Cable I change the MUX State ...
JimKar's user avatar
  • 11
-1 votes
1 answer
72 views

The PV cell can be modelled with a current source, a diode and 2 resistors. The following is the equation for single-diode model for a PV cell. Except I and V, every variables are constants like Iph = ...
Knowledge Drilling's user avatar
  • 133
0 votes
2 answers
234 views

EEG PCB. 4 layers, signal, ground ground, signal. No cuts in ground planes. Very sensitive analog. Please let me know if you notice anything drastically wrong with my design. I got it as good as I ...
Tdengineer's user avatar
  • 45
-1 votes
0 answers
59 views

I was wanting a schematic review of my DAC-AMP using the XMOS-XU316 over I2S with a ES9039Q2M. Any input would be appreciated. The specs of the DAC are: 32 bit 768kHz Sample rate Here is the full ...
Luke S's user avatar
  • 21

15 30 50 per page
1 2
3
4 5
…
4261