Component List for TBONE-FAN circuit IC1 LM317T 3 Pin Regulator IC2 LM393 8 Pin Dual comparator Q1 BD140 PNP Transistor C1 1000uF 63V C2 0.1uF 63V (prefer Tantalum) C3 220uF >20V C4 100nF >20V (prefer Tantalum) C5 22uF >20V D1 1N4002 D2 1N4002 R1 100 R2 860 R3 1K R4 NTC Thermistor 100K R5 47K Potentiometer R6 100K R7 100K R8 100K R9 100K R10 10K R11 100K