GW Instek PSB-2000 Series User Manual - Manual (Page 55)

OPERATION
55
Hi-Ω- Function
Menu Item: 03 (PSB-L Series Only)
Introduction The PSB-2000 series power supplies have filter
capacitors connected to the output. The PSB-L
power supplies also have a bleeder circuit to
discharge these capacitors to a safe level when the
output is turned off. When the Hi-Ω function is
activated, the bleeder circuit is deactivated. This
allows you to omit reverse-current preventing
diodes that are necessary for charging batteries or
capacitors when a bleeder circuit is active.
When the Hi-Ω function is activated, the internal
filter capacitors can remain charged even after the
power has been turned off and thus can be quite
dangerous. As a safety measure, the bleeder
circuits are programmed to turn back on after a
predeterminded amount of time (5 ~ 30 minutes)
after the output has been turned off.
Procedure 1. Press the MENU key until menu number ―03‖ is
displayed.
2. Press the ENTER / CHECK key to enter the Hi-Ω
function setting mode. Select ON or OFF with
the encoder wheel. The Hi-Ω function is set to
OFF by default.