Velleman SCR100 Manuel d'utilisateur télécharger pdf (Page 10)

Atlas SCR User Guide January 2008 – Rev 3

Page 10

Gate Sensitivity

The Peak Atlas SCR attempts to trigger the device under test at eight discrete

gate currents, in ascending order.

Trigger test level 1

100

Trigger test level 2

500

Trigger test level 3 2.5mA

Trigger test level 4 10mA

Trigger test level 5 25mA

Trigger test level 6 50mA

Trigger test level 7 75mA

Trigger test level 8 90mA

Thus, for example, a reported trigger current of 10mA means that device

triggering occurred at a gate current of 10mA, but not at 2.5mA. Therefore the

trigger current for the device under test is between 2.5mA and 10mA.

Although Triacs are tested in both quadrants 1 and 3, the reported gate trigger

current (for both SCRs and Triacs) is that which applies to quadrant 3.

First test

Last test

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Velleman SCR100 Manuel d'utilisateur Page 10