TIG Parts List

Component Description Function Part spec Comment Source
Motor 240v 5 hp reverseable Energy Source 240v 5 hp reverseable   Harbor Freight  $   80.00
Drive Pulley 6" A belt pulley Energy Source 6" 5/8" arbor A belt pulley Ace Hardware  $    9.00
S2 Motor Control Switch Energy Source 240v 20A Breaker with box discarded box, kept breaker mounting bracket Home Depot  
Alternator High output truck Alternator Energy Source Leece Neville 8LHA 160A 12V Disabled Internal regulator eBay  $   86.00
Pulley 3.5" A/B Belt Pulley Energy Source 3.5" 7/8" arbor pulley Mail Order  $   11.00
Belt 32" A belt Energy Source 32" A Belt   Ace Hardware  $    5.00
T1 Excitation Source Power Supply 240V/24V 300VA   eBay  $   17.00
Dx Rectifer Power Supply 25A 50V Full wave Diode Bridge Radio Shack  $    3.29
C1 Filter Power Supply 4700uF 35V Radio Shack  $    5.29
C2 Filter Power Supply 4700uF 35V Radio Shack  $    5.29
IC1 Voltage Regulator Power Supply LM7812 12V 500mA with heatsink Radio Shack  $    1.59
Fan Output Transistor Cooling Output 12v PC Heat Sink with Fan Old AMD PC  
IC2 Quad Analog OP amp Various LM324N Radio Shack  $    1.49
Shunt Alternator Output Current Sensing Current Sensing 150A/50mV Shunt eBay  $   16.00
R17 Current Amp Resistor Current Sensing 1k 0.25W Radio Shack  $    0.20
R18 Current Amp Feedback Current Sensing 240k 0.25W 240x multiplier Radio Shack  $    0.20
R19 Current Amp Resistor Current Sensing 10k 0.25W Radio Shack  $    0.20
R15 Voltage Sensing Resistor Voltage Limiter 47k 0.25W Radio Shack  $    0.20
R16 Voltage Sensing Resistor Voltage Limiter 4.7k 0.25W Radio Shack  $    0.20
R2 Max Voltage setter Voltage Limiter 10k 0.1W Trimmer Radio Shack  $    1.29
R9 Voltage Limiter Feedback Voltage Limiter 10k 0.25W Radio Shack  $    0.20
R6 Voltage Limiter Output Voltage Limiter 20k 0.25W Radio Shack  $    0.20
C7 Voltage Limiter Output filter Voltage Limiter 1uF 35V Radio Shack  $    1.59
R10 Voltage Limiter Transistor Bias Voltage Limiter 22k 0.25W Radio Shack  $    0.20
Q3 Voltage Limiter Transistor Voltage Limiter TIP3055 NPN 15A 90W Radio Shack  $    1.79
C8 Current Limiter Feedback Current Limiter .01uF 35V Radio Shack  
R12 Current Limiter Output Current Limiter 2k 0.25W Radio Shack  $    0.20
R11 Current Limiter Transistor Bias Current Limiter 100k 0.25W Radio Shack  $    0.20
Q1 Current Limiter Transistor Current Limiter TIP3055 NPN 15A 90W with heatsink Radio Shack  $    1.79
Q3 Output Transistor Output 2N5684 PNP 50A 300W Mounting on PC Heatsink with Fan eBay  $    3.00
D2 Output Transistor Protection Output 6A 50V Diode Radio Shack  $    0.62
D3 Output Transistor Protection Output 6A 50V Diode Radio Shack  $    0.62
R13 Output Transistor Bias Output 1k 0.25W Radio Shack  $    0.20
R14 Output Minimum Voltage setter Output 47k 0.1W Trimmer Radio Shack  
IFIELD Output Current LED Output Green LED Radio Shack  $    1.39
R7 Arc Detect Setter Gas Valve 10k 0.25W Radio Shack  $    0.20
R8 Arc Detect Setter Gas Valve 1k 0.75W 15-turn Trimmer Radio Shack  $    2.59
R20 Arc Detect LED Gas Valve 1k 0.25W Radio Shack  $    0.20
ARC Arc Detect LED Gas Valve Red LED Radio Shack  $    1.29
R5 Arc Detect Output Gas Valve 10k 0.25W Radio Shack  $    0.20
Q4 Gas Valve Control Gas Valve 2N3904 NPN 600mW TO-92 Radio Shack  $    0.17
R4 Gas Valve Control Gas Valve 10k 0.25W Radio Shack  $    0.20
C3 Gas Valve Control Gas Valve 10uF 35V Radio Shack  $    0.99
D1 Gas Valve Control Gas Valve Switching Diode Radio Shack  $    0.05
IC3 Gas Valve Timer Gas Valve LM555 timer IC Radio Shack  $    1.49
C5 Gas Valve Timer Cap Gas Valve 47uF 35V Radio Shack  $    1.19
R3 Gas Valve Timer Resistor Gas Valve 470k 0.1W Trimmer Suggested to control turn off time, 20 sec max Radio Shack  
R21 Gas Valve LED Indicator Gas Valve 1k 0.25W Radio Shack