The DS1669 Dallas™ is a single digital rheostat or potentiometer with access to all three potentiometer terminals. The potentiometer has 64 wiper positions with equal or linear resistive step sizes.
The MJH6284G, MJH6284, 6284 is a – 100V 20A 4MHz 160W NPN - Darlington Bipolar Transistor Through Hole TO-218 from ON Semiconductor. MJH6284(NPN), MJH6287(PNP) Darlington Complementary Silicon Power Transistors.
The 2SD1947, 2SD-1947, D1947, 1947 is a 100V 10A NPN Silicon Transistor, TO-220F Package , Applications High Gain current, low Uce Voltage Saturation, Integrated Diode, Manufactured By TOSHIBA.
The DS1302Z is a trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface IC SOP-8 Pins Package.