+ Reply to Thread
Results 1 to 5 of 5

Reload Thread: Voltage drop question

  1. #1
    Based's Avatar
    Based is online now CarAudio.com Elite



    Join Date
    Mar 2014
    Location
    Louisiana
    Posts
    880
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    414 Post(s)

    Voltage drop question

    Hey I have a question about voltage drop. How comes voltage can drop from 14.4 to 13.5 for example, instead of just going from 14.4 to 12.6 instantly? If an alternator can only produce 100 amps, if you draw 90 amps will that make your voltage drop or do you have to be pulling 100 amps before seeing any drop at all?







  2. #2
    Based's Avatar
    Based is online now CarAudio.com Elite

    Threadstarter


    Join Date
    Mar 2014
    Location
    Louisiana
    Posts
    880
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    414 Post(s)

    Re: Voltage drop question

    Also what does this mean

    Taramps HD3k:

    Voltage Low Power: 10 , 5 VDC Voltage Maximum Supply: 16 VDC Consumption at Rest:. 1.70 Amp Maximum Consumption Musical @ 12.6 VDC 170 Amp. Maximum Consumption in Sinusoidal Signal @ 12.6 VDC: 340 Amp.




  3. #3
    papermaker's Avatar
    papermaker is online now CarAudio.com Veteran



    Join Date
    Dec 2006
    Location
    lafayette,LA
    Age
    31
    Posts
    9,006
    Post Thanks / Like
    Mentioned
    50 Post(s)
    Tagged
    2 Thread(s)
    Quoted
    3352 Post(s)

    Re: Voltage drop question

    Quote Originally Posted by Based View Post
    Hey I have a question about voltage drop. How comes voltage can drop from 14.4 to 13.5 for example, instead of just going from 14.4 to 12.6 instantly? If an alternator can only produce 100 amps, if you draw 90 amps will that make your voltage drop or do you have to be pulling 100 amps before seeing any drop at all?
    you see the decrease in voltage because the alternator cannot instantaneously saturate the permanent magnets to produce the current o there is a lag that cause the voltage to drop so it can saturate it. its called ripple current. the current increases in order to deliver the power. you need a Capacitor to help smooth the ripple..

    those older caps aren't very great. with 3kw you could get away with 5 300F caps series..

    http://www.mouser.com/ProductDetail/...fLC2rGZw%3d%3d just a soldering gun and some 12ga wire between the caps and as large as you can going into and out of the caps



    knowledge is powerful but imagination is exponentially powerful!

    experience is key! otherwise life is uneventful and pointless..

    keep in mind you have a great mind and remind yourself to be mindful.

  4. #4
    10k-watts's Avatar
    10k-watts is offline Member



    Join Date
    Aug 2016
    Location
    Hampton, VA
    Age
    40
    Posts
    72
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    15 Post(s)

    Re: Voltage drop question

    Quote Originally Posted by papermaker View Post
    you see the decrease in voltage because the alternator cannot instantaneously saturate the permanent magnets to produce the current o there is a lag that cause the voltage to drop so it can saturate it. its called ripple current. the current increases in order to deliver the power. you need a Capacitor to help smooth the ripple..

    those older caps aren't very great. with 3kw you could get away with 5 300F caps series..

    http://www.mouser.com/ProductDetail/...fLC2rGZw%3d%3d just a soldering gun and some 12ga wire between the caps and as large as you can going into and out of the caps
    Capacitor is any option... most add another battery and a high output alt

    Sent from my SAMSUNG-SM-G935A using Tapatalk




  5. #5
    BSchrowang's Avatar
    BSchrowang is offline Budget Builder



    Join Date
    Apr 2016
    Location
    Peru Illinois
    Posts
    418
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    171 Post(s)

    Re: Voltage drop question

    Quote Originally Posted by Based View Post
    Also what does this mean

    Taramps HD3k:

    Voltage Low Power: 10 , 5 VDC Voltage Maximum Supply: 16 VDC Consumption at Rest:. 1.70 Amp Maximum Consumption Musical @ 12.6 VDC 170 Amp. Maximum Consumption in Sinusoidal Signal @ 12.6 VDC: 340 Amp.
    With music playing it pulls 170 amps, on a burp it pulls 340 amps.



    2010 Ford Crown Victoria Police Interceptor:
    2 American Bass XFL 15"s
    8 cubic foot box
    Taramps HD 3000 at 1 ohm
    Soundbox 1/0 CCA wire
    200 amp police alternator

+ Reply to Thread

User Tag List

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum