Scientific 5000 Series, Manual, Page: 281 / 360

APPENDIX I
MODEL 5000 SERIES MANUAL
Version 1.23
13-41
10x1000uS Pulse Option (Holdover/Holding Current)
This option provides a means to apply a 10x1000uS, 10 Amp peak current pulse to
an OVP device to fire the device on for a holding current test. A second current is
applied simultaneously to the device through a resistor to establish the required
holding current (see Figure 13-37). This current is selectable in the test program
(see Figure 13-38). The device is monitored to confirm it recovers to its off state
within the specified time limit (30mS max). The reported parameter is the time (in
mS) to recover. If the device recovers within a time less than the specified limit, the
test passes.
Figure 13-37 10x1000 Simplified Schematic
Figure 13-38 10x1000 Pulse Test Screen
10X1000 PULSE
10 AMP
AUX SRC BIAS VOLTAGE
52V (PROGRAMMABLE)
DUT
RET
LOAD CURRENT (TYP)
POS OR NEG (POS SHOWN)