Control turatie FAN PC
-1 Tranzistor NPN BC337
-Suporta max 500 mA
Europa este o "comoară pe care am moştenit-o"
Robotul ADN ar putea ucide celulele canceroase
SARS a fost o boală relativ rară; la sfârșitul epidemiei, în iunie 2003
The electronic circuit allows adjustment of fan operation, depending on temperature.
To ensure the satisfactory functioning of the fan in any case, the supply must not fall below the starting voltage. Its value is equal to 12 V supply voltage minus the voltage, Zener's T3-R6-R7. With values given in the scheme,minimum voltage for fan will be 7 V. If the fan does not start at 25 ° C, temporarily replaced the temperature sensor with a resistor of 1.8 k and reduce the value of R7. If fan speed is too high, slightly increase the value of R7.
When the temperature reaches about 35 ° C, the circuit must be activated, as indicated by increasing fan speed or voltage of supply. If this happens, change the value of R2 or adjust with a potentiometer placed in its place. At increasing temperature, fan speed will increase.
Robotul ADN ar putea ucide celulele canceroase
SARS a fost o boală relativ rară; la sfârșitul epidemiei, în iunie 2003
Niciun comentariu:
Trimiteți un comentariu