Electric contact pressure gauge liquid level automatic control circuit 5
Source: InternetPublisher:aerobotics Keywords: pressure gauge bidirectional thyristor Updated: 2020/03/18
This circuit uses a bidirectional thyristor non-contact switch, which can effectively prevent
the occurrence of contact adhesion or singeing of the electrical contact pressure gauge KP.
When the automatic failure occurs, the transfer switch SA can be opened and controlled by the start button SBi and the stop button SBz .
In the figure, R and C are bidirectional thyristor resistance-capacitance protection. A varistor can also be used, and the varistor can be of
type MY31-600; Ri is a current-limiting resistor to prevent the bidirectional thyristor from burning due to excessive control current.
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