This is the receiver from the previous alarm system. The circuit is from Radio Electronics, April 1989, and has an LDR as the sensor. Optical devices should be used to improve performance.
Found in a 2005 Linear Technology application manual, this circuit provides 12-bit resolution output...
Found in a 1968 US publication, this circuit can operate on any power grid. The thickness of the wire...
The circuit shown in the figure is intended for medical applications where the sector in contact...