Timeline for H bridge design for bipolar motor
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 22, 2019 at 23:04 | comment | added | whitegreg56 | Something seems off about your voltage/current/resistance (Ohm's Law). If the applied voltage is 3.6 volts and the resultant current is 1.2 Amps, the phase resistance should be 3 ohms, not 8.8 ohms. Are you adding a resistor in series with the motor winding? Also, apparently you are not measuring the phase current anywhere.....for current control. Although, it would probably be better to use a driver chip as already mentioned. | |
| Jan 21, 2019 at 23:31 | comment | added | Chris Stratton | Your requirement seems within the range of modern driver chips like the A4988, DRV8825, etc commonly sold assembled on inexpensive plug-in modules for 3d printers, which incorporate the chopping current regulator circuitry needed to get good performance from steppers, something your effort lacks. Is there a particular reason you are trying to build something from discrete FETs? Also note that batteries and steppers are not a very good fit for each other. | |
| Jan 21, 2019 at 23:11 | answer | added | WhatRoughBeast | timeline score: 1 | |
| Jan 21, 2019 at 23:05 | history | asked | pekoms | CC BY-SA 4.0 |