The FDS3890 80V 4.7A N-Channel MOSFET has been designed specifically to improve the overall efficiency of DC/DC converters using either synchronous or conventional switching PWM controllers.
The 2SK2372, 2SK-2372, K2372, 2372 is a N-Channel MOS Field Effect Transistor designed for high voltage switching applications. 2SK2368: RDS(ON) = 0.27 (VGS = 10 A) Low Ciss 3600 pF TYP. High Avalanche Capability Ratings.
The YX850 Power Failure Automatic Switching Standby Battery Lithium Battery Module DC5V-48V Emergency Converter. It is an automatic switching module. When the battery is dead or there is a problem with the battery, it is powered by the power supply.
The NE555 is a square wave pulse generator module can be used to produce square wave signals for experimental development or in applications such as driving stepper motors, and as an adjustable pulse generator for microcontroller.