Engineering machinery fuse burnout warning circuit
A technology of construction machinery and circuits, applied in the field of insurance burnout warning circuits, can solve problems such as warning lights not on, and achieve the effect of high reliability
Inactive Publication Date: 2020-05-12
LIUZHOU LIUGONG EXCAVATORS +2
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Abstract
The invention discloses an engineering machinery fuse burnout warning circuit, and belongs to the field of engineering machinery electrical technology. The circuit comprises a current-limiting resistor, a warning lamp and a field-effect tube, and the current-limiting resistor and the warning lamp are sequentially connected in series between the drain electrode of the field-effect tube and a groundwire; the source electrode of the field effect transistor is connected with a power supply and the power supply wiring end of a fuse, and the load wiring end of the fuse is connected with the grid electrode of the field effect transistor through an input resistor and is connected with the ground wire through a pull-down resistor; and a load is connected between the load wiring end of the fuse andthe ground wire. According to the invention, the problems that the warning lamp is not on when the fuse is burnt out and the load is damaged at the same time, and the voltage can be measured at the load wiring end after the fuse is burnt out to cause confusion to maintenance personnel can be solved.
Application Domain
Arrangements responsive to excess currentEmergency protective arrangements for limiting excess voltage/current
Technology Topic
Automotive engineeringBurning out +5
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