Atlas SCR100 User Guide
November 2021 – Rev 9
Page 11
Gate Voltage
If the
SCR100
has successfully tested a triac or thyristor, it will be able to
display the gate voltage as well as the gate sensitivity.
The gate voltage is the voltage measured across the gate and the cathode (for a
thyristor) or across the gate and MT1 for a triac. The voltage is measured
during the time that the device under test has actually triggered.
An example of the displayed value is
shown here:
Note that the gate voltage is measured at the upper end of the displayed gate
trigger current.
For example, if the gate sensitivity is
shown as 35 to 50mA, then the
displayed gate voltage will be the
voltage measured during a gate current
of 50mA.
The gate voltage may also be dependent on the load current, for the
SCR100
,
the load current is fixed at 100mA, higher load currents may result in a higher
gate voltage.
The load current at which SCRs and
Triacs are tested is displayed. This
value is fixed for all devices, and
simply serves as a reminder.
The
symbol indicates that this is the final page of information. Pressing the
scroll-off
button again will return the display to the first page of information.
Gate voltage
V
G
=0.73V @ 50mA
Tested at a load
current of 0.1A
