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why reed relays are used in multimeter

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hemnath

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Can you guys explain me why and what is the purpose of it in multimeter?
 

Hi,

Signal switching, fast, low power, some are free from contact bouncing, high ohmic OFF..

Klaus
 
The other choice would be semiconductor switches,
which probably have worse leakage, more limited voltage
standoff and certainly less tolerance of abuse.
 
They have excellent isolation characteristics.
Shielded relays can provide isolation in the hundreds of Megahertz range, something that is near impossible on a silicon switch.
 
Also reed relays have the contacts totally isolated from the control signal, which semiconductor switches do not.
 
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