USB network port module test
The USB network port module used in this case is Microchip's EVB-LAN9500A-LC, which can be used to expand the network port of the evaluation board. Start the evaluation bo...
The company is trial-producing a product, using the STM32F103 master control. Now a large number of defects (about 30%) are found. The problem is that VCC is short-circuited to the ground. These are a...
See the picture. This is the front end of the push-pull amplifier. Points a and b are connected to the next level. Please solve the voltage of a and b. If the AC signal is a small signal, it can be an...