Newest Questions
214,130 questions
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Safety check/general advice for a simple, but high-Amp H-bridge motor control circuit
Shown on the image is a schematic for a simple, 2-motor control circuit using 2x Full H-bridges and ESP32. Power supply is a regulated 24VDC, and not a battery.
Despite its simplicity, the circuit ...
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1
answer
21
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Any workaround for using load cells around large stepper motors?
I have an application where I need to take load cell readings where the weight plate is very close to two of these. So a big magnetic stepper motor. I am taking load cell measurements with a simple ...
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8
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Fail-safe/fault-tolerant control signals from an MCU
I'm considering a design would use an MCU to control the on/off state of several devices such as voltage regulators and MOSFET gate drivers. The devices would be on a separate PCB that is connected to ...
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Struggling with Single-Layer PCB Design in KiCad [closed]
can anyone design a development board for me using the PIC24FJ256GA705 microcontroller? Or at least can someone provide a basic reference design or idea on how to complete the entire board as a single-...
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94
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Where is the mistake in my JK-flipflop counter design?
For my electronics class, I have an assignment to design a JK-flipflop counter.
I was given a sequence, with which I made a truth table including the J and K values for Q3,Q2 and Q1. I then used K-...
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69
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How to know when a specific I2C bus doesn’t work without removing every device connected to it? [closed]
There is a device pulling down my I2C bus 2. To this bus, I have 4 devices connected to it. What methods are there to check if a specific device is pulling down my I2C lines without fully removing it ...
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68
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What is the purpose of transistor T in this reference-voltage generation circuit?
https://www.researchgate.net/publication/2978882_A_025-m_30-V_1T1C_32-Mb_nonvolatile_ferroelectric_RAM_with_address_transition_detector_and_current_forcing_latch_sense_amplifier_scheme
I understand ...
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59
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First PCB design review — ESP32-S3 driving HUB75E LED matrix panel, single board
I'm building a WiFi-connected RGB LED matrix display. The idea is a single PCB that sits behind a 128x64 P2.5 HUB75E panel, connects to the internet, and pushes pixels.
This is my first PCB. I've ...
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3
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122
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Are These Two circuits the Same?
Are these two circuit the same? Can I just add a wire and assume its the same for calculation?
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3
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213
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Does On-Chip Decoupling Negate the Need for PCB PDN Analysis
I am preparing a PDN decoupling simulation for a KSZ9897RTXI switch, which utilizes 1.2V, 1.8V, and 2.5V rails.
I am trying to establish the maximum frequency range for my target impedance analysis.
...
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2
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65
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Understanding Physical Layer Signaling: Do High-Speed SERDES (PCIe, USB) Rely on Differential Current Steering?
I’m looking to verify my understanding of how high-speed interfaces like PCIe and USB handle multi-Gbps data rates at the physical layer without compromising the Power Delivery Network (PDN).
My ...
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3
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80
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Why is Thevenin's theorem not satisfied in these two seemingly equivalent circuits?
https://is.gd/xzBzm4 (Link to Falstad circuit simulator for problem circuit)
I created two circuits, Circuit 1 and Circuit 2 in the image. The right side of both circuits (to the right of the A and B ...
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37
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When an Inverter Generator is producing split phase 120/240 how important is leg balancing? [closed]
In the context of a conventional generator I understand at a high level the importance of leg balancing, mainly having to do with the magnetic fields in the spinning alternator. What I am not clear on ...
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57
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SPI not working at higher frequency on NRF24L01+. MCU is Infineon XMC1302
I have 2 NRF24L01+ modules and 2 XMC1302 MCU boards. The transmitter SPI runs at 500 kHz. The receiver code was initially 500 kHz. This works fine.
I tried changing the receiver SPI frequency to 1 MHz....
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Microstrip patch antenna on PET substrate
I am designing a microstrip inset fed patch antenna on 0.9mm thick PET substrates (Measured dielectric constant = 3.0). When i do the Ansys HFSS simulation at 2.45 GHz, i am getting very good return ...
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