| 摘要 |
A power supply apparatus for air conditioning system having a power supply(100) for central control part consisted of a bridge rectifier(D1) for rectifying voltage outputted from a transformer(500); a regulator(U1) connected to a diode(D2) and condensers(C1~4) to transform the output voltage of said rectifier(D1) to prescribed voltage; a bypass diode(D3) preventing to be applied higher back-electromotive force than output voltage to said regulator(U1); a LED1 displaying operation state: a power supply(200) for communication interface consisted of diodes(D4~7); regulators(U2~3) transforming the voltage outputted from said diodes(D4~7) to prescribed voltage, connected to condensers(C5~11) and diode(D8) for protecting the regulator; and bypass diodes(D9~10) for inducing back-electromotive force in case of the generation of it: an input/output driving power supply(300) consisted of a bridge rectifier(D11) for rectifying AC voltage outputted from a transformer(500); a regulator(U4) connected to a diode(D12) for protecting regulator and condensers(C13~18) to transform the output voltage of said rectifier(D11) to prescribed voltage; a bypass diode(D14) preventing to be applied higher back-electromotive force than output voltage to said regulator(U14); a LED2 displaying operation state; a switching transistor(Q1) connected to resistances(R3~8), a condenser(C16), a diode(D13) and said regulator(U4) to control output voltage; and a photocoupler(PC1) operating switching transistor(Q1) and determining initializing state: and a power supply(400) for controlling relay consisted of a bridge rectifier(D15) for rectifying voltage outputted from a transformer(500); a regulator(U5) connected to a diode(D16) for protecting regulator and condensers(C19,20,23,24) to transform the output voltage of said rectifier(D15) to prescribed voltage; a bypass diode(D18) preventing to be applied higher back-electromotive force than output voltage to said regulator(U5); a LED3 displaying operation state; a switching transistor(Q2) connected to resistances(R11~16), a condenser(C22), a diode(D17) and said regulator(U5) to control output voltage; and a photocoupler(PC2) operating switching transistor(Q2) and determining initializing state is disclosed. Thereby, it is possible to supply power to respective circuit to remove bad smell in air.
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