relay min current

Jan 16, 2008 2 Replies

Hi,



I need switching a few nA dc signal and then measure it. All electromechanical relays I have found have Minimum Switching current 10 µA. Is it really these relays restriction and how can I solve the problem?



Thanks in advance,



Alexander.


=B5A.=20

There are special reed relays with "wet" contacts (covered with=20 mercury). Those relays do not have the minimum current requirement.

Vladimir Vassilevsky DSP and Mixed Signal Design Consultant

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The small telecom type relays will actually work fine at low levels. Omron, Aromat, Fujitsu, NEC.

John

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