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5-6. Source Power Circuit
5. Circuit Descriptions
This circuit shows SMPS(Switch Mode Power Supply) which converts AC input voltage
(115V 50Hz, 127V 60Hz, 220V 50~60Hz, 230V 50Hz) to a high DC voltage.
The input AC source power is converted to DC through a wave rectifier (BD1) and the
converted DC power will generate a constant waveform on the switching transformer
using a high speed (100KHz) switching motion of TOP223Y.
The D104 will rectify the generated voltage and transform into a steady 12V DC source
power used for the digital display panel and relays. The regulator (KA7805) finally
transforms into 5V DC source power for the control board and sensor’s circuits.
Be careful to handle this circuit due to high voltages
(AC 115V 50Hz, 127V 60Hz, 220V 50~60Hz, 230V 50Hz)
Caution
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