abid wrote, "
Is the whole circuit SRD? It's a bit confusing," referring to step_recovery_diode.asc from 2006.
No, I don't think so.? Only about half of it is.
Also, the text is rather small, but you can fix that by starting LTspice with the "-FixUpSchematicFonts" command-line switch.? This schematic pre-dates a change in LTspice's handling of font sizes, which makes them look so small today.? Use "-FixUpSchematicFonts" to update the font sizes.
On that schematic, look for the comment text "Diode with parasitics".? The components below that text are:
Those six components represent the SRD.? Well, technically the first four are the SRD, and Cpad1 and Cpad2 are probably the PCB pads to which the SRD connects.
All the other stuff to the left of Cpad1 and to the right of Cpad2 are external devices to which the SRD is connected.? It looks like Tshunt is a shorted quarter-wave
trap filter, and T1 and T2 just represent traces on the PCB.? Rs is the source impedance and RL is the load.
Helmut provided several URLs as comments on the schematic.? It might be worth following those, to see where he got this schematic.? Since it is nearly two decades old, you might need to use the "Wayback Machine" () to retrieve some of them if they are not on the 'net anymore (but hopefully they are).
However - Tony is more of an expert on this, so I recommend following his recommendations.
Andy
