Ideal Diode circuit

[Infrared_Fred]

In this simulation, the circuit with the LM324 op-amp  (rightmost)seems to be working as an ideal diode(?).  I am interested in building a similar circuit for an AC rectifier and I was looking for comments/critiques, on the design or any other suggestions.  BTW the ultimate circuit would be in a bridge rectifier circuit but that was a bit too complicated to draw on that simulator.  Also there is the LT4320 but for cost considerations, I would as soon go with a plain bridge rectifier and take the power loss.  Input specs: 40Vrms 60Hz 6A current limit of the transformer output:5A 15mF capacitance ~48V out.  Thank you!

[Ian.M]

4 bad connections . . . . (all around the LM324)

Falstad is NOT a full SPICE simulator and if abused frequently provides misleading results.

Do yourself a favor and re-draw it without the crud in parallel on the left, in a serious SPICE package, preferably a popular one that's free (to use), e.g. LTspice, then if it *still* doesn't make sense, attach the sim files (but *NOT* generated result files) here.

Hint:  In LTspice, putting the following SPICE command on your schematic:

Code: [Select]

.model Dideal D(Ron=10n Roff=.1G Vfwd=0) ;Ideal diode

gives you an almost perfectly ideal behavioral diode model, that you can invoke by placing Diodes and editing their value to Dideal so you can construct a bridge rectifier with three of the Dideal diodes and only ONE of the more complex read-world 'ideal' diode circuit you are trying to simulate.

[Infrared_Fred]

Okay, I will do that.  Thank you!