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When the converter starts up, the control loop may initially be out of balance, leading to temporary oscillations. This is often a result of the interaction between the control loop response and the LC filter. This is why you may observe 50Hz oscillation during startup.
Run your Buck simulation in LTspice.
Generate the FFT plot for the EMC test voltage.
Save the plot data as a .plt file.
Open the .plt file and modify it to include the "lines" data as shown in Fig 10 of the article.
Save the modified .plt file.
After saving the modified .plt file, try reopening...
The VBUS_DET (VBUS Detect) pin is used to detect the presence of VBUS (Voltage Bus) on the USB port. Its main purpose is to allow the device (hub) to determine whether it is connected to a host (e.g., a computer or a USB charger) that is providing power.
In Self-powered mode, the hub is powered...
You can check these docs.
https://github.com/Fatihalparslan/HX711-WITH-CCS-C-FOR-PIC16F877A
https://forum.allaboutcircuits.com/threads/hx711-adc-interfacing-with-pic16f887a.178675/
Quick Charge (QC) adapters are capable of providing different voltage levels (5V, 9V, 12V, etc.) based on the communication with the connected device. Without any specific request from the device, most QC adapters default to providing 5V. However, this is not always guaranteed, and the behavior...
Hardware Engineer:
Design and Development: Create new hardware components, circuit boards, and systems.
Prototyping: Build and test prototypes to ensure they meet design specifications.
Integration: Work on integrating hardware with software and other systems.
Research and Innovation: Stay...
Without seeing the code or setup it is quite impossible to speculate anything. However, if you are confident that your code is OK, and so are your connections, I suggest you adjust the variable POT connected to the V0 pin of your LCD.
Coaxial stub tuners can be a practical solution for homemade impedance tuning. These tuners use sections of transmission line (coaxial cable) as reactive elements (inductors and capacitors). By adjusting the length and position of these stubs, you can achieve the desired impedance transformation.
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