G-80 air plasma cutting machine circuit
Source: InternetPublisher:newrudeman Keywords: Cutting machine electromechanical plasma Updated: 2021/09/03
G-80 air plasma cutting machine circuit
This machine uses high frequency and high pressure to ignite the plasma arc. Its control is mainly
realized by the LM324 integrated operational amplifiers Ai, A2 and RU used as voltage comparators. The reference voltage is added to the inverting input terminals of AL and Az or the non-inverting input terminals of A3
, and their magnitudes are 0 respectively. IV, 2.3V and 6.3V. Button SB is used to switch the direction of the base bias
current of transistors VT] and VT3. The output of VT3 and VT3 is the input voltage of the comparator. In the figure, sP is the compressed air pressure switch.
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