| 摘要 |
<p>Trimming of a trimmable microminiature force-sensitive switching device (10) that includes a silicon substrate (12) having a reduced-thickness, deflectable member (14) adapted to change its deflection in response to changes in the external condition to be detected, such as pressure, acceleration and temperature, is accomplished by application of a preselected external force, such as pressure, that causes the deflection of the deflectable member (14) and the closing of first one then progressively more of a plurality of switches (52). Electrical energy is then applied to the external terminal (34) of the common contact (28) and the external terminal (50) of the common terminal (46) of fusible links (44), such that current flows through the switches (52) that have closed and through their associated fusible links (44), causing those fusible links to open circuit, thereby precluding the subsequent detection of external conditions whose level is at or below the preselected level applied during trimming of the device.</p> |
