Suggested by General Electric in a 1970 documentation, this circuit makes use of some components of the time, in the case of transistors. The circuit detects smoke by the transparency changing of the air.
Circuits similar to this appear elsewhere in this section. The transistors can be BC549 (low...
Indicated to be used at the sensor input of a PC, this circuit was found in an English...
July 2017 - Mouser Electronics announced the availability of Littelfuse's GEN2 series Schottky...