Hi All, I've developed a MOSFET full wave bridge rectifier. When the MOSFETs are fully on it rectifies beautifully. For my test conditions i used comparitors to turn them on when required. Yamudiki Mogudu 1988 Video Songs Free Download here. In real life MOSFET drivers are used. The reason for me using MOSFETs in the first place is because i wanted to rectify low AC voltage (1RMS to 12RMS). This is my system input voltage range.

Turning these MOSFETs on are a problem at low voltages. I'm battling at high voltages as well. The sine wave has a positive cycle and a negative cycle. During the postive cycle I wish to turn on two sets of MOSFETs, and during the 2nd half I wish to turn on the second set.

The H-bridge circuit derives its name from the full-bridge circuit. Controlling DC Brush Motors with H-bridge. Driver With BiCMOS control and power MOSFET.

This means that the driving signal needs to be synchronised with the input sinusiod. The input is a varying 1-12Vrms signal at 50Hz. Can anyone suggest a driving signal for the MOSFETs? Looking at conventional MOSFET drivers, I don't think they will work. Are there any suggestions? Hey Wayneh I never check this thread for a while. I analysed that circuit and tried finding some info on the chip.

I'll take a closer look at the presentation as well. I've looked at running the MOSFETs using IR2110 drivers. You'll need 2 ICs instead of 4. Come across some problems with it though. Some of sources on the bridge experience negative voltages that exceed he negative threshold of the chip. In an ideal world things would work out so well.

Windows Xp Sp3 Bootable Iso Image Free Download. I have a solution for this but i'm not too sure about it. If you interested we can brainstorm it. Click to expand.I appreciate the notion but it's beyond my pay grade!

The last time I looked around in this area, I was hoping to find an example circuit online that I could follow to make my own. But I never found one I felt comfortable with. Without an oscilloscope or any experience in this area, the details of setting the timing around the transitions, to prevent ringing and such, seemed intimidating for a DIY project. What I wanted to find was an active rectifier with these properties: 1. Scalable by adding parallel MOSFETs.

Minimum 5A initially, scalable to 30-50A. (I don't have a specific top end in mind, just more than 10A).

Max voltage up to 120V would be fantastic, but if it mattered, I could drop back to 50V or maybe even less. Input frequency widely variable from maybe 5 Hz up to 500 Hz.

This is the biggest design challenge? Such a beast would find application to DIY windmills and other applications.

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