[backcolor=rgb(239, 245, 249)]I use a 28335 chip to control an optocoupler. The rectangular wave is normal when it passes through the optocoupler and reaches the IPM. I add 15 or 20V to the IPM module
Question: What is the problem if the counter does not work? The boards have these chips: 74373 (02 08 10 21 07 32 175 154 138 245 573), 8155, 12887, cy7c136, W78E516B, oks1235, etc. I don't use 74193.
[b][color=black]When it comes to LED drive accuracy, constant current error usually comes to mind. In fact, drive accuracy is not limited to current accuracy. LED is a typical current-driven device. A
I made a dual-tube forward switching power supply, and I wanted the output power to be 150W, but when I actually measured it with a 1 ohm resistor, it was only about 6A, which means the actual output
[color=#3e3e3e][font=Tahoma, Arial, sans-serif] The conversion between DC and DC mainly refers to the conversion of electrical energy from the voltage value of a DC current to another voltage value. [