Great video. One nit: in the initial description of the carbon pile mechanism (at about 2:12), reducing the compression *increases* (not reduces) the resistance of the pile, causing lower current flow, and reducing voltage. The overall description is right, but the resistance increases to reduce current flow.
Sure: lower compression force cause resistance of the carbon pile to increase, thus field current will drop. For example: generator output voltage increases (more than 28V) => more supply to the voltage coil => higher attractive force => less compression => more resistance => field current will reduce => generator output voltage will reduce to (back to 28V). Sorry if there is a mistake in the video...
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Thank you for the excellent video. It provided the clearest explanation of GCU I have come across.
I watched about 7 of videos on carbon pile regulators and you were the only one that got it correct when talking about current instead of voltage.
Really excellent video. Addred greatly to knowledge of my airplane's electrical system.
Great video. One nit: in the initial description of the carbon pile mechanism (at about 2:12), reducing the compression *increases* (not reduces) the resistance of the pile, causing lower current flow, and reducing voltage. The overall description is right, but the resistance increases to reduce current flow.
Sure: lower compression force cause resistance of the carbon pile to increase, thus field current will drop.
For example: generator output voltage increases (more than 28V) => more supply to the voltage coil => higher attractive force => less compression => more resistance => field current will reduce => generator output voltage will reduce to (back to 28V).
Sorry if there is a mistake in the video...
Excellent!!
Thank you!
Thank you
Another great presentation! :)
this made me pass my AME exam