How often do you need to generate this pulse?14.4V Nicd Battery, 1.7Ah can full supply ( to an coil) 20 amps in 20 millisecond
How big is the coil? What is the winding resistance?Dear all
Please help me to know: 14.4V Nicd Battery, 1.7Ah can full supply ( to an coil) 20 amps in 20 millisecond (other problem( issues )don't care) Many thank you
How often do you need to generate this pulse?
The batteries internal resistance may prevent supplying 20A, but a large capacitor charged by the battery could.
Many thank you for your helpHow big is the coil? What is the winding resistance?
Those two things alone might make it impossible for even an ideal 14.4 V source to get you to 20 A in 20 ms.
Many thank you for your helpDon’ forget the inductance.
dI / dt = V / L
20 / 0.02 = 14.4 / L
L = 14.4 x 0.02 / 20 = 0.014
So the coil can have at most 14mH inductance. That is if it has zero resistance.
Many thank you for your helpDon’ forget the inductance.
dI / dt = V / L
20 / 0.02 = 14.4 / L
L = 14.4 x 0.02 / 20 = 0.014
So the coil can have at most 14mH inductance. That is if it has zero resistance.
Many thank you for your helpHow often do you need to generate this pulse?
The batteries internal resistance may prevent supplying 20A, but a large capacitor charged by the battery could.
Many thank you for your helpDon’ forget the inductance.
dI / dt = V / L
20 / 0.02 = 14.4 / L
L = 14.4 x 0.02 / 20 = 0.014
So the coil can have at most 14mH inductance. That is if it has zero resistance.
Many thank you for your helpDon’ forget the inductance.
dI / dt = V / L
20 / 0.02 = 14.4 / L
L = 14.4 x 0.02 / 20 = 0.014
So the coil can have at most 14mH inductance. That is if it has zero resistance.
Many thank you for your helpIf there are no intermediate fuses or protection devices, YES, the battery can probably deliver 20 amps for a few seconds, if it is charged and in good condition.
Many thank you for your helpHow often do you need to generate this pulse?
The batteries internal resistance may prevent supplying 20A, but a large capacitor charged by the battery could.
How often do you need to generate this pulse?
The batteries internal resistance may prevent supplying 20A, but a large capacitor charged by the battery could.
Many thank you for your helpHow often do you need to generate this pulse?
The batteries internal resistance may prevent supplying 20A, but a large capacitor charged by the battery could.