| ??? 10/19/06 22:00 Read: times |
#126781 - lets put it this way Responding to: ???'s previous message |
Assume the top 2 mosfets are no 1 and 3 and the buttom mosfets are 2 and 4 and the motor connected across the center of 1 and 2 from one side and 3 and 4 from other side. if you need to move forward you turn mosfets 1 and 4 on so that current flows rotating the motor in one direction at full speed. If u need to reduce speed you keep mosfet 1 on while switching mosfet 4 on and off with the required duty cycle to control speed.
If you need to reverse direction you switch mosfet 3 on while mosfet one on and off with pwm. Dont forget the soft start and you can do current sensing for protection. Mahmood |
| Topic | Author | Date |
| Full bridge controlled by 4 PWMs | 01/01/70 00:00 | |
| This will tell you how to post a diagram | 01/01/70 00:00 | |
| one way | 01/01/70 00:00 | |
| Danger ahead | 01/01/70 00:00 | |
| Hmm. | 01/01/70 00:00 | |
| an even better Idea | 01/01/70 00:00 | |
| an even even better idea | 01/01/70 00:00 | |
| maybe IR has something | 01/01/70 00:00 | |
| found a way... | 01/01/70 00:00 | |
| Switching | 01/01/70 00:00 | |
| switching.... | 01/01/70 00:00 | |
| lets put it this way | 01/01/70 00:00 | |
| only good for small motor | 01/01/70 00:00 | |
| schematics | 01/01/70 00:00 | |
| IPM? | 01/01/70 00:00 | |
IPM | 01/01/70 00:00 | |
| My Code | 01/01/70 00:00 |