The SN74LS83N, SN74HC83N, SN7483 Are high speed 4-bit fuller Adder IC with carry out feature. The IC has four independent stages of full adder circuits in a single package. It is commonly used in applications where arithmetic operations are involved.
The MT3608 Step-up converter (Output voltage higher than input). Supply voltage 2-28V, output max. 28V at max 2A. Avoid the state when the input terminals have higher voltages than those set on the output terminals. The drive chip may be damaged.
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 BD243C is a 6A, 100V NPN Bipolar Power Transistor is designed for use in general purpose amplifier and switching applications. BD243B, BD243C (NPN); BD244B, BD244C (PNP) are complementary devices.