| 摘要 |
<p>A monitoring system (10) includes a connector (16), having an input path and a current return path (14,18), for connecting a two section wrist strap (12) to the connector (16). The two section wrist strap (12), when affixed to an operator's wrist, would complete an electrical path between the input path and the current return path (14,18) of the connector (16) across the wrist skin surface. A current source (20) provides an electrical current to the input path and a comparator (22) compares a voltage at the input path to a high limit value (HI) and a low limit value (LOW) and provides an alarm signal (26,28) whenever the voltage at the input path is not between the high limit value (HI) and the low (LOW) limit value. With such an arrangement, proper connection between the operator and ground is monitored thus significantly reducing the possibility of an electrostatic discharge harming an electronic component handled by the operator. <IMAGE></p> |
