Wheat planter particles clogging circuit

  
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FIG clogging circuit wheat planter particles. In this circuit, the light-emitting diodes and photodiodes arranged in planting at the outlet - will be blocked, if blocked light
Wheat planter particles clogging circuit - schematic

received by the photodiode, so VD2 resistance will increase, the voltage NE555 foot rise pin output alarm signal, the speaker sound.




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