MOSFET rectifier design for the economy bipolar supply

 Doing a lot of cribbing from the original MOSFET bridge rectifier design, here is my try at a half-wave MOSFET rectifier for the economy bipolar supply.  Two MOSFETs and two opamp sections are used. 

MOSFET half-wave bipolar supply rectifier

The main change is only two resistors are used for input waveform sampling - this was done since there would be no way to terminate two more resistors anywhere else other than ground.  A second pair of resistors could be used if there was a reason to isolate the two opamp  minus inputs.

Here is the simulated loaded output of the half-wave rectifier: 

100 ohm loads on both outputs

As with the original bridge circuit, the gate drive varies depending on the load. Here is the output from a lightly loaded supply (just the sampling resistors). 

no loads other than voltage dividers

The gate drives are just a little bit of "scratchiness" near the positive and negative input voltage peaks.

Since it's simpler than the bridge circuit this half-wave rectifier will be a good candidate to build first.

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm