| 摘要 |
FIELD: measuring technique. ^ SUBSTANCE: each of contacts 1-1, 1-2,à1 -n directly or through respective resistor 2-1,2-2,..2-n and respective resistor 3-1,3-2,..3-n is connected with second outlet of respective controlled switch 4-1, 4-2,..4-n and respective controlled switch 5-1,5-2,..5-n. First inlets of controlled switches 4-1,4-2,..4-n are connected with outlet of controlled direct current source and with first outlet of additional controlled switch whose second outlet is connected with inlet of voltage meter to which potential proportional to circuit resistance is fed. First outlets of controlled switches 5 -1, 5-2,.. 5-n are combined and connected with common bus of meter. Control inlets of controlled switches 4-1, 4-2,..4-n and of controlled switches 5-1, 5-2,.. 5-n are connected with respective outlets of control unit. Control inlet of controlled direct current source is connected with respective outlet of control unit. ^ EFFECT: enlarged functional possibilities of metering device. ^ 1 dwg |
