FIELD: electricity.
SUBSTANCE: application: in the field of electric engineering. Device for control and diagnostics of load element comprises source of AC voltage supply, working neutral conductor of which is connected to common wire of body, to phase through switching element, common point is connected for supply of load element and control element in the form of light diode indicator, which, via the first current-limiting resistor, is connected to load element and to common wire of body, protective element in the form of stabilitron or resistor is connected parallel to control element, besides voltage of identical phase of control circuit is connected via optically coupled isolator to common point of load element and control element supply via the second current-limiting resistor, plus of power supply source is connected to minus via light diode of optically coupled isolator, switching transistor of generator or generator in the form of flashing light diode and serially connected current-limiting resistor.
EFFECT: expansion of functional resources.
10 cl, 8 dwg
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