The XL4015 is a Buck Converter DC DC Step Down Converter 5V-32V To 0.8V-30V 5A 75W. This product is a 180 KHz fixed frequency PWM DC/DC module, capable of driving a 5A load with high efficiency, low ripple and excellent line & load regulation.
The BC337 is an NPN transistor with a maximum gain of 630, commonly used in low power audio applications. It can also switch loads up to 45V and 800mA hence also used as general purpose transistor.
The IRF1010E is a 60V 84A Single N-Channel Power MOSFET in a TO-220 package The IR MOSFET™ family of power MOSFETs utilizes proven silicon processes offering designers a wide portfolio of.....
The ESP-01 Breakout Adapter for ESP8266 serial to Wi-Fi transceiver module. Since the ESP-01 pinout is not breadboard friendly and unlabeled, this makes it inconvenient for rapid prototyping.
The BC558 is a PNP transistor hence the collector and emitter will be closed (Forward biased) when the base pin is held at ground and will be opened (Reverse biased) when a signal is provided to base pin.