GW Instek APS-1102 User Manual - Manual (Page 20)

1.5 Operation Principles
APS-1102 Programmable AC/DC Power Source 1-6
1.5 Operation Principles
Figure 1-1 shows a block diagram of the APS-1102.
Figure 1-1. Block Diagram
The APS-1102 is broadly divided into four blocks.
<1> DC power source block
The DC power source block includes power factor improvement functions. The block provides DC
power sources for various devices on PCBs and for the amplifier block, while improving the power
factor of power supply input.
<2> Signal source and system control block
This block includes an internal signal source with sequence functions, and is able to provide
AC+DC output. It can also be used with added external inputs and internal signal sources. This
block also contains the user interface.
<3> Isolation block
The isolation block isolates the primary (main power source circuitry) and secondary sides.
<4> Amplifier block
The amplifier block includes a protection circuit.
PFC
CIRCUIT
～ LINE 100V-230V
50Hz/60Hz
1.4kVA MAX
POWER
LINE
FILTER
SUB-DCPS
CIRCUIT
<1> PFC
INVERTER
ISO
CIRCUIT
(PRI)
ISO
CIRCUIT
(SEC)
<3> ISOLATION
INVERTER
<4> AMP
INVERTER
OUTPUT
400Vpk MAX
1kVA MAX
CONTROL
I/O
USB
EXT SIG IN
2.2V MAX
Zin=10k

EXT SYNC IN
TTL
PANEL <2> CONTROLLER
OSC
AMP
CONTROL
SYSTEM
CONTROL
DISPLAY
POWER
AMP
PROTECT
OUTPUT
AC250V MAX
1kVA MAX