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![AVT3055 A AVT3055 A](https://kamami.pl/16343-large_default/avt3055-a.jpg)
ANALOG FAN SPEED CONTROLLER - PLATE DISPLAY
Producer: AVT
The system has been designed for active cooling of a high power amplifier and allows for the regulation of the rotation of four fans depending on the temperature. The popular temperature transistor is BD139. Accuracy is not important, and the use of this type of transistor reduces the cost of the entire system. In addition, the housing of this transistor can be easily screwed to the heat sink, ensuring good thermal contact. The rotation control consists in a smooth change of the output voltage, so it does not generate any additional disturbances, which makes it perfectly suitable for power amplifiers. With quiet listening, when the power loss is small and the cold radiator - the fans are not audible.
The printed circuit board and documentation are included.
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The module of the SD and MMC memory card reader ("large") with the card lines led out to the 2.54 mm connector mounting area /. It allows easy connection of the SD card to the project being built. BOB-12941
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V4 features the same sensors as v3 (L3GD20H, LSM303D) and adds an LPS25H digital barometer. An I²C interface accesses 10 independent measurements that can be used to calculate the sensor’s altitude and absolute orientation.
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3-CHANNEL DEVICE FOR REMOTE CONTROLLING - SET ASSEMBLED AND STARTED
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ANALOG FAN SPEED CONTROLLER - PLATE DISPLAY