It can also be used for testing infrared burglar alarm systems. This is not an infrared motion detector! The IR detector circuit in principle, converts the IR signal pulse trains into noticeable aural ...

In other words, using one of these circuits could help you determine ... If you want to test drive your newly constructed detector but don’t have an IR source within reach, the next circuit ...

The design incorporates a gain-selectable photo amplifier for use with an infrared emitter detector ... increased to verify an Alarm condition. Smoke detector with gas sensor TGS 813 – source The ...

Many robotic applications require a sensor to detect ... the figure shows an infrared close-object alert system built around two popular and less expensive integrated circuits: the LM555 timer ...