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Air compressor motor phase failure protection circuit
Source: InternetPublisher:走马观花 Keywords: Electric motor air compressor protection circuit electromechanical Updated: 2020/01/31
In the figure, KP is the electric contact pressure gauge. Ai is the CD4073 AND gate circuit, Az is
the ~D4025 NOR gate circuit, and A3 is the CD4071 OR gate circuit. A 7806 three-terminal fixed integrated voltage regulator is used as the control circuit to control
the DC operating power supply. When the AC power supply loses phase, the relay KA is released and the motor stops running.
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