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27th October 2004, 03:13 PM
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#1 |
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diyAudio Member
Join Date: Oct 2004
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decoupling caps question
Ok, Im swapping out the opamps in my dvd player to AD8620's. Im adding 47uF Elna decoupling caps from pin 8+ to ground, and pin 4- to ground. I was told to just "stack" them over the existing .01uF ceramic SMD caps. My question is the pole orientation of the elna's. Now the pin 8 is easy + to +, - to gnd. How do I orientate the cap from neg to gnd on pin 4? pos on cap to pin 4, neg to gnd, or vise versa? Thanks in advance!
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28th October 2004, 03:37 AM
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#2 |
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diyAudio Member
Join Date: Oct 2004
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please??
It may be a stupid question, but can someone take a sec to answer me? Going from DC -11v on opamp to gnd through a electrolytic cap. Where does the pos+ on the cap go? To gnd or -11v?
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28th October 2004, 12:43 PM
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#3 |
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diyAudio Member
Join Date: Jan 2004
Location: Quebec
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The (-) marks on the capacitor always goes to the smallest voltage potential on the circuit. So, for the positive supply, your cap should have its negative marks on the ground when other cap terminal goes to (+V). Fot the negative supply, the other cap should have its negative mark to (v-) and the other positive terminal on the ground.
Luke123 |
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28th October 2004, 12:47 PM
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#4 |
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diyAudio Member
Join Date: Nov 2002
Location: Grenoble, FR
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Yes, - doesn't always go to ground
I learned it the hard way 
__________________
Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease |
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28th October 2004, 03:48 PM
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#5 |
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diyAudio Member
Join Date: Oct 2004
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Thank You
Thank You very much!!!!
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28th October 2004, 07:31 PM
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#6 | |
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diyAudio Member
Join Date: Dec 2003
Location: south east mo.
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Quote:
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28th October 2004, 09:56 PM
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#7 | |
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diyAudio Member
Join Date: Nov 2002
Location: Grenoble, FR
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Quote:
mine thought it was a rocket, and flew through the room 
__________________
Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease |
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