Specifications

DESCRIPTION
SEC-1212 / SEC-1223 are switched mode power supplies which convert
120 VAC, 60 HZ. or 240 VAC, 50 HZ to regulated 13.8 VDC based on pulse
width modulation ( PWM ) control. ( NOTE : These units are factory pre-set
for 120 VAC, 60 HZ. input . For conversion to 240 VAC, 50 HZ. , please see
instructions below ).
FEATURES
BASED ON SWITCHED MODE TECHNOLOGY AND PWM CONTROL
COMPACT AND LIGHTWEIGHT
HIGH EFFICIENCY AND LESS HEAT DISSIPATION
PROTECTED AGAINST SHORT CIRCUIT, OVER CURRENT AND
OVER VOLTAGE (THROUGH PWM CONTROLLER)
SEC-1212 IS CONVECTION COOLED. SEC-1223 HAS FORCED AIR
COOLING AND OVER TEMPERATURE SHUT DOWN
UL LISTED AND APPROVED
COMPLIES WITH CLASS “B”, PART 15 OF F.C.C. RULES FOR RADI-
ATED AND CONDUCTED NOISES
INPUT VOLTAGE CONVERSION FROM 120 VAC TO 240 VAC
WARNING ! TO REDUCE THE RISK OF ELECTRICAL SHOCK, IT IS
RECOMMENDED THAT THE FOLLOWING SERVICE BE PERFORMED
BY A QUALIFIED SERVICE TECHNICIAN
1. Unplug the power supply form the AC outlet
2. Remove the top cover
3. SEC-1212 : Points “D” and “E” on the printed circuit board are con-
nected with a flexible wire jumper for 120 VAC input. Disconnect
the jumper at point “D” by pulling the female quick connect up-
wards. Tape the end of this quick connect with insulation tape.
Change the fuse to 2A (see fuse rating at page 7)
SEC-1223 : Points “C” and “E” on the printed circuit board are con-
nected with a flexible wire jumper for 120 VAC input. Disconnect the
jumper at point “C” by pulling the female quick connect upwards.
Tape the end of this quick connect with insulation tape. Change the
fuse to 4A (see fuse rating at page 7)
4. Replace the top cover.
2.