Strong xenon, Instruction Manual

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Check the lamphouse ammeter upon the first bulb ignition, and adjust the current con-
trol potentiometer to set the desired bulb current. On Strong projection consoles, this potentiometer
is usually remoted to the lamphouse control panel adjacent to the ammeter. Rotate the potentiometer
clockwise to increase current, or counterclockwise to reduce current. When the potentiometer printed
circuit board assembly is used in place of a remote control assembly, a second (fine) adjustment poten-
tiometer is included for output changes in small increments. The PC board is marked coarse and fine
to identify the (2) potentiometers.
The stepdown transformer for the lamphouse control circuit is factory prewired.
Terminals 2 & 4 supply 120 V.AC to the lamphouse. After completing the lamphouse interlock circuit,
the 120 V.AC returns to the power supply on wires 5 & 6 to energize the control printed circuit board
at plug PL5 upon closure of the LAMP ON switch. The same circuit (5 & 6) energizes the AC
lamphouse igniter.
A second, two-terminal barrier strip located next to the DC output terminals is in-
cluded in spotlight power supplies. Wires 7 & 8 (220 V.AC) terminate at this position, and supply
voltage to lamphouse blowers in Gladiator III spotlights through MS connector Pins I & J. These
wires are unused in Super Trouper and other spotlights, but are included to permit interchanging
power supplies between Super Troupers and Gladiators. DC output must be re-set after changing
a power supply from one system type to another. See the spotlight manual for current requirement.
The DC Pulse Igniter used in some Strong lamphouses does not require the AC control
voltage supplied on 5 & 6, but will be actuated from the high DC open circuit (“no load”) voltage
normally generated by the power supply. The DC voltage will fall to a lower sustaining level (20 - 35
V.DC) after the xenon bulb ignites, and the DC Pulse Igniter will cease operation when the DC voltage
drops below 130 V.DC.
Optional Lamphouse
Termination Panel as
supplied for units without
MS Connector Assembly.
Assembly No. 62-70030
3
DC DC
Control Circuit
Terminals
Current Control Receptacle
Fine Coarse
PC Board 62-70028