ClintOHenry
New Member
I bought a 16v 60ma AC motor. Using a needed voltage drop of 104v, I come up with about 1700 Ohm resistor. Could someone check to see if I did that right?
I bought a 16v 60ma AC motor. Using a needed voltage drop of 104v, I come up with about 1700 Ohm resistor. Could someone check to see if I did that right?
I bought a 16v 60ma AC motor. Using a needed voltage drop of 104v, I come up with about 1700 Ohm resistor. Could someone check to see if I did that right?
Your calculations are correct 1734 ohms... BUT -->I bought a 16v 60ma AC motor. Using a needed voltage drop of 104v, I come up with about 1700 Ohm resistor. Could someone check to see if I did that right?
I agree, this is not a good plan. A motor is not a resistance load. It is an inductance load and so the value of a resistor would really need to vary as the motor demands more or less current with a load. Do we know if 60ma is the stall current, starting current, free spinning, load of x, or what?it's one thing to limit the current thru an LED with a resistor, but not typically done with a motor which has a dynamic load.
it's one thing to limit the current thru an LED with a resistor, but not typically done with a motor which has a dynamic load.
why not find a supply, a wall wart, that is closer to the operating voltage of the motor and equal or greater current?
for the motor that you mentioned in your first post, 16V AC, and probably 120ma should be okay, to allow for greater start current .. anything a bit more than that, even up to !A will work, as the motor will only draw the current it needs, and a higher current capacity isn't harmful