Abstract :
Reed-switch behaviour under electrostatic, as distinct from magnetic, forces has been analysed. It is established and confirmed experimentally that, for the usual simple configuration, there exists a limiting voltage beyond which the structure becomes mechanically unstable and the reeds continue to deflect to closure. This limiting voltage may be well below that required for true electrical breakdown. The motion of the reeds is also examined, the time for closure is derived, and corresponding limits for pulse voltages are determined. Finally, possible counteracting mechanisms for avoiding switch failure due to this effect are considered.
