Device for electric circuit monitoring
A technology of electric circuit and current detection device, which is applied in the direction of circuit device, emergency protection circuit device, emergency protection device with automatic disconnection, etc., which can solve the problems of long shut-off pulse, harmful function, and consumption
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[0016] In the exemplary embodiment shown in the single figure, an electrical device 10 for loop monitoring comprises two current paths 11 , 12 , in which switching sections of transistors 13 , 14 are connected in each case. The two current paths 11 , 12 are connected on the one hand to two supply voltage terminals 15 , 16 of a supply voltage source not shown here and on the other hand to an external consumer 19 via two consumer terminals 17 , 18 , In principle, there can also be a plurality of consumers, which can also be non-ohmic consumers (for example capacitive and / or inductive and / or ohmic consumers).
[0017] Parallel branches 20 , 21 each consisting of a series circuit of a further transistor 22 , 23 and a low-current shunt 24 , 25 are connected in parallel with the switching sections of the two transistors 13 , 14 . The voltages tapped at the low current shunts 24 , 25 are fed to current shunt sensors 26 , 27 respectively, which generate a current-dependent signal at t...
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