Support and General Use > Hardware
using sansa clip+ in car
Crafty:
it's not a car problem. i check for volts across the output jack ground and usb ground:
1.25vdc not charging
1.30vdc charging
output ground is floating. When it's grounded to the car stereo it can't float.
Removing the output grd shouldn't hurt anything as long as the car stereo input capacitors can filter that 1.30vdc. only problem is: output is effected by what ever ac noise in the car's power bus.
Removing the power ground is a "shot in the dark" risk.
Using a ground loop isolator may work. For me that's a bandaid fix because it open the door for ac noise.
nonob:
--- Quote ---Maybe using a car DC to 120VAC adapter and a 120VAC wall USB charger will work.
--- End quote ---
It works, but it isn't a good fix for me..
--- Quote ---Removing the output grd shouldn't hurt anything as long as the car stereo input capacitors can filter that 1.30vdc. only problem is: output is effected by what ever ac noise in the car's power bus.
--- End quote ---
1-Unplugg audio ground only:
The sound is back but with noise.I can hear it very well when i do "pause" or when i listen quiet music.
--- Quote ---Removing the power ground is a "shot in the dark" risk.
--- End quote ---
2-Unplugg power ground:
My sansa clip + rebooted and did a electronic overcurrent sound (not from audio but from player!!!!) , i've been afraid !!
I unplugg all very quickly!
--- Quote ---Using a ground loop isolator may work. For me that's a bandaid fix because it open the door for ac noise.
--- End quote ---
An isolator on sound output or on power supply ?
Crafty:
--- Quote from: nonob on December 24, 2012, 05:12:41 AM ---
--- Quote ---Maybe using a car DC to 120VAC adapter and a 120VAC wall USB charger will work.
--- End quote ---
It works, but it isn't a good fix for me..
--- End quote ---
What was the issue?
--- Quote from: nonob on December 24, 2012, 05:12:41 AM ---
--- Quote ---Using a ground loop isolator may work. For me that's a bandaid fix because it open the door for ac noise.
--- End quote ---
An isolator on sound output or on power supply ?
--- End quote ---
sound output.
I could not find a power supply isolator.
nonob:
--- Quote ---
--- Quote ---Maybe using a car DC to 120VAC adapter and a 120VAC wall USB charger will work.
--- End quote ---
It works, but it isn't a good fix for me..
--- End quote ---
What was the issue?[/quote]
No technical issue but i don't want use a "big" dc/ac converter to charge my "very little" clip.
--- Quote ---I could not find a power supply isolator.
--- End quote ---
And about the link above ?
I found that:
http://www.vpelec.com/fichiers/pdf/conversion-energie/convertisseur-dc-dc/ec-0027-convertisseur-dc-dc-20w-vp-electronique.pdf
http://www.minidsp.com/onlinestore/detail/8-accessories/flypage/81-minidc-isolator?sef=hcfp
Crafty:
--- Quote from: nonob on December 24, 2012, 07:11:42 AM ---
--- Quote ---I could not find a power supply isolator.
--- End quote ---
And about the link above ?
--- End quote ---
I failed the 12vdc to 12vdc converter because on cost and hassle to make. Digetkey does have 12vdc to 5vdc converters. I really wanted something more end-user friendly.
--- Quote from: nonob on December 24, 2012, 07:11:42 AM ---I found that:
http://www.vpelec.com/fichiers/pdf/conversion-energie/convertisseur-dc-dc/ec-0027-convertisseur-dc-dc-20w-vp-electronique.pdf
http://www.minidsp.com/onlinestore/detail/8-accessories/flypage/81-minidc-isolator?sef=hcfp
--- End quote ---
http://www.vpelec.com/fichiers/pdf/conversion-energie/convertisseur-dc-dc/ec-0027-convertisseur-dc-dc-20w-vp-electronique.pdf
How much is this? It's 4000ma out. My guess >$100usd. Is there a USA supplier?
http://www.minidsp.com/onlinestore/detail/8-accessories/flypage/81-minidc-isolator?sef=hcfp
This one fails on output current...only 100ma@12v...me thinks.
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