A D V E R T I S E M E N T
This circuit is a simple detection of air flow, this circuit can be signaled in the event of air flow. The sensor used is a filament incandescent lamps. These sensors will experience changes in heat if exposed to the wind. If there is no air flow, the filament resistance will be low. If there are air flow, the filament resistance varies. Variations caused by differences in heat resistance filament. Variation of resistance also affects the voltage variation that passes through the filament. Voltage variations will be processed by the LM339 Op-amp and will be displayed in the form of LED flame. To be able to use the L1 filament incandescent lamps 40 watts. Caution, do not touch the filaments of incandescent lamps by hand. Here is a schematic drawing of air flow detection:
Automatic Air Flow Detector Circuit
PCB Simple Automatic Air Flow Detector
Here I also include a PCB (printed circuit board) of the Simple Automatic Air Flow Detector and you can also download it. Password : circuitdiagram-schematic.com
A D V E R T I S E M E N T
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