| 摘要 |
FIELD: electrical engineering. SUBSTANCE: invention relates to diagnostic device for amperometric determination of current flowing through pickup 41. Device includes current source 48 to send constant current through mentioned pickup 41, interchanging gear 43 for selective cut-in of mentioned current source, comparator 42 to compare difference Vof potentials across mentioned pickup with reference voltage Vand to generate controlling signal D, means 44 to control mentioned interchanging gear in response to specified controlling signal D and means 48, 49 measuring time during which specified interchanging signal Q has first logic level during chosen time interval in order to ensure output signal 50 exhibiting average value of current Iflowing through mentioned pickup 41. EFFECT: improved authenticity of determination of value of flowing current. 2 dwg |
