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#1
08-18-2006, 09:42 AM
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I am looking at the MC33030 chip as a way of driving a damper actuator. Everything looks good except I need to 4 amps at 24vdc. Figure 30 of the pdf shows a circuit, would this work and if it will, what components? Thanks for any help, I attached the pdf mike  |
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#2
08-18-2006, 10:41 AM
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| The IC is obviously intended for what you want to do, fig 30 shows how to increase the drive capability, you will need a couple of complementary pairs for the external H bridge, I have used MJE2901 & MJE2801 in the past, you need to look up a modern equivalent. Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. |
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#4
08-18-2006, 11:10 AM
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| I assume you mean RE? You would need to know the forward volt drop of the diodes and the B-E voltage when the tr is on. I would say in your case a ball park would make RE around .17 ohms. This is to retain the current limit feature for a stalled motor. Initially put a low fuse in your 24v for trial purposes. Al.
__________________ CNC, Mechatronics Integration and Machine Design. “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. |
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