I have an AT switching power supply that needs to be repaired. The solution is TL494+LM339. The fault phenomenon is: the positive and negative 12V output is only more than 8V, and 5V is normal. I init
The serial port and keyboard have two interrupts. The keyboard triggers the serial port to send data, and the display screen receives data. The two do not interfere with each other. But now when a key
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When I was in college, the teacher of the digital electronics course had a very strange accent. I also thought that the content of digital electronics was boring and could be easily implemented with a
A constant current and constant voltage double closed-loop control system composed of TL494 was developed. The system realizes the constant current regulation and constant voltage regulation functions