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THEORY OF OPERATION |
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HIGH VOLTAGE / HIGH FREQUENCY CIRCUIT
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| POLARITY |
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| BOARD | ||
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| SWITCH |
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| WORK | ||
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| TRANSFORMER |
LINE |
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| ELECTRODE |
MAIN |
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SWITCH |
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TRANSFORMER |
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R | X2 |
| AC | DC+ |
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E |
| SHUNT |
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| SCR |
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C |
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| BRIDGE |
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O |
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N |
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N |
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E | X1 |
| AC | DC- |
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C |
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| CHOKE |
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T |
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| SIGNALSGATE |
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POWER |
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| FEEDBACK | |
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FACTOR |
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CAPACITORS |
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| ARC START |
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| LCD DISPLAY | |
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| 115VAC | PROTECTION | 115 VAC | CONTROL | KEYPAD | |||
FAN |
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| SNUBBER |
| GATE SIGNALS | BOARD |
| LED | ||
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| KEYPAD | |
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| 115 VAC |
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| 115 |
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| VAC |
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| 24 VAC |
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| CONTROL | 18 VAC |
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| 115 VAC |
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| TRANSFORMER |
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| 16 VAC |
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RECEPTACLE |
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| 115 VAC |
| HIGH VOLTAGE | HIGH FREQUENCY SPARK | |||
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| REMOTE |
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| CIRCUIT |
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| RECEPTACLE |
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The control board passes the 115vac through the pro- tection / snubber board to the primary of the high volt- age transformer. The secondary of the high voltage transformer is coupled to a spark gap generator and also to the high frequency transformer. The high fre- quency transformer transfers the high frequency “spark” to the electrode stud.