They then use a digital isolator to allow the serial digital output to cross the boundary back to the main circuit. Don’t overlook using fiber optics to achieve isolation. The Navy learned to love ...

Conclusion It is essential to know the significant difference between an AC and DC isolator switch. Is a DC or AC circuit being created? Is an inductive or resistive switch to be used?

Industrial switches require physical separation, or galvanic isolation, to protect the logic-controlled circuitry from disturbances on the power side, and to ensure user safety.

High isolation audio intercoms require high on/off ratios for their analog switches. Several candidate switching devices were evaluated for such service with gratifying results.