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Alarm and protection circuit using operational amplifier
Source: InternetPublisher:3228 Keywords: Protection circuit operational amplifier transistor Updated: 2021/07/17
It uses an operational amplifier and works as a comparator. The detected signal Us can be a voltage converted
from temperature, pressure, humidity, strain and other non-electrical quantities through a transducing element . When U. ,>U. (comparison threshold)
, the transistor VT is turned on, driving the alarm circuit, or the relay controls the action of the protection system.
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