APS-9301
APS-9102 ser's
Manual
6.
Circuit Principle
The
series products are controlled by CPU and operated via keyboard.
The APS series are fully digital controlled.
The input isolate transformer has bee applied to isolate the city power from
the AFS series. And step down the input voltage for appropriate applications.
The main
AC
is rectified and filtered to become a very smooth
DC
source for power amplifier. Sine ware form is generated by the digital
synthesizer and filtered by a
high impedance filter. Therefore, the sine
ware
will be very stable and the distortion will be reduced.
The APS series have two voltage feedback systems. One is analog feedback
for quick
and the regulation will be located
In the
of
The other is digital feedback system. The system will
read
output voltage and compare with the settings. The accuracy of
be limited in the range of
The
wave
is amplified by power amplifier. The power amplifier
a very clean and low distortion sine ware to the output of
APS
series through the output transformer. The offset and calibration data of
are stored in the EEPROM. The instrumentation would be
Calibrated automatically when the APS series is switched on.
RMS
circuit
applied
the voltmeter and ammeter. The value of
LED display
is
true RMS value.
For
operation. the APS series equips a memory of EEPROM. The
EEPROM will memorize the latest settings data automatically after the APS
Series
been switched off. If the APS series is switched on again, the
all the data from the EEPROM and provide the output value
same as the previous setting. It is unnecessary to reset the data after APS
switched off.
APS-9301
APS-9501U
APS-9102
ser's
7.
Block Diagram
Transformer
Amplifier
Sine
Synthesizer
Frequency
Sensor
Voltage
Voltage
Sensor
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