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- Jan 14, 2011
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- Gillette, Wyo.
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- Halfbiass...Electron Herder and Backass Woof
This power supply provides 28 volts DC to the main board, IGBT's, SCR's, converter and inverters. It also acts as a pass through fused source for the 1/2 HP heatsink cooling fan, and a resistor field for the DC bus voltage. It also provides 120 for the other ass't cooling fans scattered throughout the drive.
There is an LM 2577T-ADJ switching regulator, an IRBF 30 N-channel mosfet and a couple TO-220 cased diodes.
Incoming 120 is tapped to go through a bridge rectifier supplying +/- 162 vdc to the dc section.
My questions are;
Does the power supply need to be loaded to get relevant measurements?
And, why are they starting with +/- 163 dc?
There is an LM 2577T-ADJ switching regulator, an IRBF 30 N-channel mosfet and a couple TO-220 cased diodes.
Incoming 120 is tapped to go through a bridge rectifier supplying +/- 162 vdc to the dc section.
My questions are;
Does the power supply need to be loaded to get relevant measurements?
And, why are they starting with +/- 163 dc?
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