Centralized control of the rescue alarm circuit
Source: InternetPublisher:赔钱虎 Keywords: Alarm circuit centralized control position control light emitting diode Updated: 2020/09/26
The centralized control call for help alarm circuit can be used for hospital bed calls, and can also be used for anti-theft alarms in multi-story buildings, dormitories, warehouses and other places
. The circuit is shown in Figure 13-64. Three monitoring positions are drawn in this circuit, but there can actually be many monitoring positions. The circuit
uses thyristor control, KD9 561 or CW9561 simulates sound integrated circuit A for alarm, and LED for position display. Alarms can be controlled
from different locations .
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