Power Supply Unit - Star Micronics LC-1011C Technical Manual

3.

Power Supply Unit

A ringing choke converter type unit is used with a dropper type unit in the power supply unit, fulfilling the input and output
conditions described in the chart below.
Voltage Range
110, 120 VAC
Input 220, 240VAC
230 VAC
5 VDC 5%
Output
25 ~ 45 VDC
Input
110V AC
120V AC
220V AC
230V AC
240V AC
Max. Current Output
Noise filter
circuit
Transformer T1
Fig. 2-3 Power Supply Unit Configuration
Service
0.7 A
0.4 A
0.4 A
0.4 A For logic circuit
drive, for motor
holding.
1.5 A For print head
drive, for motor
drive.
Rectifier
circuit
Rectifier
circuit
– 21 –
THEORY OF OPERATION
Unit Type
Dropper
Non regulator.
Main logic board
IC 7
Output
Dropper
5V DC
circuit
Output
25~45V DC