BlackOps
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dc motor diode transistor simple
Hello!
i've found one DC motor at home.
i was testing it with battery, and it seems to work from 3v voltage, and it also worked on 6v...i suppose its range is up to 9 or 12 maybe. and when i changed polarity of battery its rotation direction also changed.
first question right now: how can i find out its main characteristics without any datasheet, just by measurement?
now i am going to control its work using PIC16F917. for now, its the first test, so i am not going to control direction or speed. i want to make it rotate every 5 second for 5 seconds.
so the first thing i am going to do is to write program in ASM, which turns HIGH one of the PIC pins for 5 second, and does it every 5 seconds. this is not problem.
next is:
1. choose between HIGH SIDE DRIVE and LOW SIDE DRIVE (no need for H bridge drive, cuz i am not going to control its direction), which one should i choose?
2.what must be the values for all the parts? which parts to buy? R1,R2, transistor, Diode D1?
i also saw on the H bridge drive schematic that there is inverter right before transistor, and i also saw it on some LOW side drive circuits...but on this circuit i dont see this inverter....so it is not needed? (this schematic is also from microchip)
if it is needed in which part i can have it, which part to buy?
3. what must be the Vcc value? the same 5v which comes to microcontroller? or i can apply more voltage to Vcc?
4. the ground of the drive circuit and the ground of the microcontroller is same?
5. i wont corrupt my PIC?
Hello!
i've found one DC motor at home.
i was testing it with battery, and it seems to work from 3v voltage, and it also worked on 6v...i suppose its range is up to 9 or 12 maybe. and when i changed polarity of battery its rotation direction also changed.
first question right now: how can i find out its main characteristics without any datasheet, just by measurement?
now i am going to control its work using PIC16F917. for now, its the first test, so i am not going to control direction or speed. i want to make it rotate every 5 second for 5 seconds.
so the first thing i am going to do is to write program in ASM, which turns HIGH one of the PIC pins for 5 second, and does it every 5 seconds. this is not problem.
next is:
1. choose between HIGH SIDE DRIVE and LOW SIDE DRIVE (no need for H bridge drive, cuz i am not going to control its direction), which one should i choose?
2.what must be the values for all the parts? which parts to buy? R1,R2, transistor, Diode D1?
i also saw on the H bridge drive schematic that there is inverter right before transistor, and i also saw it on some LOW side drive circuits...but on this circuit i dont see this inverter....so it is not needed? (this schematic is also from microchip)
if it is needed in which part i can have it, which part to buy?
3. what must be the Vcc value? the same 5v which comes to microcontroller? or i can apply more voltage to Vcc?
4. the ground of the drive circuit and the ground of the microcontroller is same?
5. i wont corrupt my PIC?