| Electronics > Beginners |
| Calculations for ESC - Resistor Divider Network |
| (1/1) |
| ripper_pc:
I am curious as to the calculations behind this: https://simple-circuit.com/wp-content/uploads/2018/03/pic16f887-brushless-motor-controller-esc.png (See Capture.png) Example; If the MCU works on 3.3V; 1 - Till what value of the Motor Battery Voltage is this resistor divider good. (Do we just take into account ex: R1 and R6 as voltage dividers to calculate the output voltage of the divider for BEMF sensing?) 2 - Alternatively; if I want to run the motor at a higher voltage; which part of the voltage divider do I change ? (Is it okay to add a Diode to Vdd (MCU) to limit any potential damage to the MCU from higher voltages) 3 - What would happen if R7;R8;R9 were reduced to 10K ? Thanks! |
| Navigation |
| Message Index |