TM
11-6625-3041-30/TO
33A1-8-908-12
1-24. MULTI VDC (A1) START (CONT)
The outputs from all three Sens circuits are connected
Sens Sum
together. A low output from any Sens circuit causes a low
level at the negative input of the Sens Sum circuit at U5-10.
The positive input to the Sens Sum circuit at U5-11 is +5V,
which is more positive than the negative input at U5-10. The
positive input" takes control and sets the output of the Sens Sum
circuit at U5-13 high.
The high-level Sens Sum output inhibits the Clock output.
The Clock output drives the Switcher. Thus, with the Clock
inhibited, the Switcher is off.
Ref Sel
With the Switcher off no dc outputs are available, includ-
ing that from the Run Ref whose output is low.
1-31