nuckolls.bob(at)aeroelect
Guest
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 Posted: Thu Jul 14, 2016 8:37 pm Post subject: Can Someone PLEASE Double Check My Homework?!?!?! |
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At 05:20 PM 7/14/2016, you wrote:
| Quote: | --> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com>
Do the banded ends of the diodes connect to the positive side of the coils? If so, OK. I can not tell from the picture. |
The S701-1 and -2 contactors START with the same,
4-terminal, off-the-shelf device. When used as a
S702-2, bus tie contactor the schematic looks like this
excerpt from Z-14. TWO diodes provide power to
energize the contactor from either bus . . . this
insures that you can get the cold bus connected to
the hot one no matter which is which. The THIRD
diode is the legacy coil suppression device.
[img]cid:.0[/img]
A photo of the as-aSsembled product from B&C
looks like this:
[img]cid:.1[/img]
The S701-1 contactor is for more rudimentary tasks
like battery contactors. Here you only need the coil
suppression diode and the schematic looks like this:
[img]cid:.2[/img]
And the finished product looks like this
[img]cid:.3[/img]
Bob . . .
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