Hello for the first time!
I'm a physics major who is getting into electronics seriously for the first time ever. I have a model boat that I'm designing a speed controller for. A very smart coworker of mine suggested an H bridge and gave me some MOSFETs. The intent at the end is to use the bridge to control 9.6V out of an RC battery with PWM from my Arduino. For simplicity's sake right now I'm using a 12V motorcycle battery and a 5v control source with one switch for each direction. The motor pulls 10A at high load and 12V (tested). Here's what I've built:
When I use it I get some very funky output and some very hot MOSFETs. It hardly puts out half a volt to my motor... Thankfully the polarity reversal does work though.
The MOSFETs are N-channel NXP PSMN8R0-40PS, datasheet here: http://www.nxp.com/documents/data_sheet/PSMN8R0-40PS.pdf
I feel like I'm missing something fundamental about my MOSFETs or just MOSFET design in general.
Please help and thank you!
I'm a physics major who is getting into electronics seriously for the first time ever. I have a model boat that I'm designing a speed controller for. A very smart coworker of mine suggested an H bridge and gave me some MOSFETs. The intent at the end is to use the bridge to control 9.6V out of an RC battery with PWM from my Arduino. For simplicity's sake right now I'm using a 12V motorcycle battery and a 5v control source with one switch for each direction. The motor pulls 10A at high load and 12V (tested). Here's what I've built:
When I use it I get some very funky output and some very hot MOSFETs. It hardly puts out half a volt to my motor... Thankfully the polarity reversal does work though.
The MOSFETs are N-channel NXP PSMN8R0-40PS, datasheet here: http://www.nxp.com/documents/data_sheet/PSMN8R0-40PS.pdf
I feel like I'm missing something fundamental about my MOSFETs or just MOSFET design in general.
Please help and thank you!