When the firebox of the fireplace or stoves in the country wood raw material to the combustion process from time to time it is necessary to control: throw the wood, increase craving, etc. to Replace “master’s eye” and recall this can offer an electronic device indicating the reducing flame in the furnace (the furnace).
I’m a little poeksperimentirovat and found that the infrared detectors, it turns out, react to a burning match with very little infrared (IR) radiation. But it is this knowledge served as an impetus for development of combustion control. While a bright flame at a distance of 1.5 m from the fire alarm silent. As soon as the fire in the stove or fireplace will begin to fade — the alarm sounds. And here, for example, to flash with the use of the flash lamp IFK-120 (and tiny flashes built into modern cameras) response of device no.
To collect such a device is simple, even an Amateur without much experience and to enjoy the work, well-deserved pride from creating a useful tool with their hands and the gratitude of the household.
The most costly part of the device — infrared detector (IR) — costs about 80 rubles. But it can be used from the old remote control receiver (remote control) installed in the TV. Such detectors began to recruit colored television back in the late 80-ies of the last century, fit and taken from the detector (receiver Board do not need). Modern TVs also have a similar IR detectors — and they will fit for the design.