just thought a simple way to determine what would happen.. simply get a primary and secondary,,,,pulse it... look the primary voltage on oscilloscope than short the secondary .. than short thru a diode than revert the diode and analyse what happen to the primary collapse voltage. .
$ 1 5.000000000000001e-7 8.281975887399957 40 5 50
v 64 240 64 80 0 0 40 50 0 0 0.5
d 352 80 352 144 1 0.805904783
T 208 80 352 288 0 0.1 5 3.4025640131753403 -8.224992411552755 0.95
w 352 192 352 288 0
g 64 240 64 272 0
f 144 368 208 368 0 1.5
w 208 352 208 288 0
r 208 288 208 80 0 220
w 208 80 64 80 0
d 208 384 208 352 1 0.805904783
R 144 368 96 368 0 2 400 10 10 0 0.5
g 208 384 208 400 0
z 256 384 256 336 1 0.805904783 1000
w 256 336 208 288 0
w 256 384 208 384 0
r 384 80 384 144 0 100
w 384 144 352 144 0
w 352 80 384 80 0
s 352 144 352 192 0 0 false
o 7 64 0 291 1280 6.4 0 -1
o 0 64 0 289 40 6.4 1 -1