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Phil White
Joined: 10 Jan 2006
Posts: 45
Location: Downers Grove, IL
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 Posted: Sun Apr 11, 2010 2:00 am Post subject: Crowbar OV module part |
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Bob: The part listed as "MBS4991" is no longer carried by Digi-Key.
Mouser lists a possible replacement as a silicon bi-lateral switch by
NTE as their part NTE6403. Is this the correct type item? Or is that
device something else?
Need to build 2 OV modules for my electrically dependent, dual
alternator project.
Phil
RV-10 w/ Mazda 20B rotary engine in IL
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nuckolls.bob(at)aeroelect
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| Posted: Sun Apr 11, 2010 5:51 am Post subject: Crowbar OV module part |
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At 04:57 AM 4/11/2010, you wrote:
| Quote: |
Bob: The part listed as "MBS4991" is no longer carried by Digi-Key.
Mouser lists a possible replacement as a silicon bi-lateral switch
by NTE as their part NTE6403. Is this the correct type item? Or is
that device something else?
Need to build 2 OV modules for my electrically dependent, dual
alternator project.
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Those devices have been out of production for
many years. We purchased one-time-lifetime-buys
to keep our production needs at B&C/AEC going
but developed the 2-transistor synthetic trigger
diode version illustrated in the DIY data package
for when they finally run out.
Suggest you consider that version for your project.
I'm aware of no suitable replacements for the MBS4991/4992
component.
Bob . . .
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mcculleyja(at)starpower.n
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| Posted: Sun Apr 18, 2010 7:54 am Post subject: Crowbar OV module part |
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Phil: I sent you an off-list response on your MBS 4991 problem using
your aol address on 4/11. If you did not receive it and would like to,
let me know off list at mcculleyja(at)starpower.net.
JIM
==========================================================================
Phil wrote:
| Quote: |
Bob: The part listed as "MBS4991" is no longer carried by Digi-Key.
Mouser lists a possible replacement as a silicon bi-lateral switch by
NTE as their part NTE6403. Is this the correct type item? Or is that
device something else?
Need to build 2 OV modules for my electrically dependent, dual
alternator project.
Phil
RV-10 w/ Mazda 20B rotary engine in IL
=============================================================================
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