Good Will Instrument PSH-10100 User Manual - page 16
PSH SERIES PROGRAMMABLE POWER SUPPLY
USER MANUAL
26
7-2. The Configuration of PSH-series Block System
The whole Block system consists of the foll owing Circuit Blocks:
Power Factor Corrector: BD101, Q101-Q103, D102.
Micro Processor Unit (MPU): U308
Digital to Analog Converter (DAC): U316.
Analog Switch Circuit: U328, R356, R363, R370, C314, C318, C320,
U331.
Pulse Width Modulation: U206.
Driver C ircuit: Q202 -Q203, T202.
Power Stage: Q204 -Q205, Q211-Q212, T203, D207 -D208, L201,
C246-C249, C253.
Post Regulator: Q207, Q208.
Voltage Control Circuit: U334.
Current Control Circuit: U334.
Error Amplifier: U333.
Opto-isolator: U209.
Auxiliary Power supply: Q201, U203, T201.
OVP: U315, U331, Q209, U327, Q310, U328.
Unit 2: When the power reaches about 2 times the Unit 1, the Unit 2
will be used additionally.
Unit 3: When the power reaches about 3 times the Unit 1, the Unit 2
and Unit 3 will be used additio nally.