AMZ FX ANALOG ALCHEMY GEOFX MEF ROG MEF DIY WIKI

What's this particular diode for?

Started by mark2, January 06, 2021, 10:06:53 AM

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mark2

January 06, 2021, 10:06:53 AM
I've been using a variant of this relay bypass in my pedals and blindly ported over the D1, but I'm struggling to understand under what circumstance it's useful.  If it's simply polarity protection, why not put it before the regulator?


garcho

#1
January 06, 2021, 10:34:57 AM
Lookup "flyback diode"
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"...and weird on top!"

iainpunk

#2
January 06, 2021, 10:37:13 AM
freewheel diode is so there isn't a big voltage spike when de-coupling a inductor.

cheers, Iain
friendly reminder: all holes are positive and have negative weight, despite not being there.

cheers

mark2

#3
January 06, 2021, 11:00:44 AM
Thank you both! This is just what I was looking for.

antonis

#4
January 06, 2021, 02:11:01 PM
Quote from: garcho on January 06, 2021, 10:34:57 AM
"flyback diode"
Quote from: iainpunk on January 06, 2021, 10:37:13 AM
freewheel diode

Could I name it "inductive kick" by-pass diode..??
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

iainpunk

#5
January 06, 2021, 03:46:47 PM
Quote from: antonis on January 06, 2021, 02:11:01 PM
Quote from: garcho on January 06, 2021, 10:34:57 AM
"flyback diode"
Quote from: iainpunk on January 06, 2021, 10:37:13 AM
freewheel diode

Could I name it "inductive kick" by-pass diode..??
or a FreeBack diode, to obscure the meaning even more.
friendly reminder: all holes are positive and have negative weight, despite not being there.

cheers

anotherjim

#6
January 07, 2021, 09:19:24 AM
I like "snubbing " diode. Other forms of snubbing are available. Take back that back-EMF!

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