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Help Creating This Boombox

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Discussion in 'General Electronics Discussion' started by Thornton0808, Jul 7, 2012.

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  1. Jul 7, 2012 #1
    Thornton0808

    Thornton0808

    2
    0
    Jul 7, 2012
    I'm new to electronics and I'm having trouble understanding this diagram.

    http://www.instructables.com/files/orig/FEM/6S7D/H0AR6ZVW/FEM6S7DH0AR6ZVW.jpg
    http://cdn.instructables.com/FAT/YPAQ/H19RUZ0M/FATYPAQH19RUZ0M.MEDIUM.jpg

    I can't match up where I am supposed to connect the USB receiver, Ipod Dock, and different resistors. I am following this http://www.instructables.com/id/DIY-Portable-Boombox-Audiophile-Quality/?ALLSTEPS build but I am stuck on creating the circuit. I bought all the materials listed in the beginning but the schematics makes it seem like I need different supplies.
     
  2. Jul 7, 2012 #2
    davenn

    davenn Moderator

    13,782
    1,934
    Sep 5, 2009
    Hi thornton
    welcome to the forums :)

    the first link shows a stereo amplifier with the left right and ground inputs on the left side of the diagram.
    I dont know a lot about Ipods (I prefer other brands), but I'm assuming that there are left and right and ground pin lines available in the large connector that plugs into the ipod.
    would will probably need to fdo some googling to get a pin identification diagram.
    Its a pity he didnt identify which pins/wires are the audio ones

    Dave
     
  3. Jul 8, 2012 #3
    Thornton0808

    Thornton0808

    2
    0
    Jul 7, 2012
    Thanks for the response but I'm still lost about how to hook everything up. What I am assuming is that I take the Ipod dock and USB receiver and connect it to the input section of the amplifier, connect the speakers to the output section. How do I/how do I find out where to connect the 4700 UF 25V capacitors and the 1K 1/4 W resistors. I am thinking I connect the capacitors directly to the woofers because the instructions said to connect the smaller capacitors to the all range speakers.
     
  4. Jul 9, 2012 #4
    mechtronics

    mechtronics

    153
    2
    Aug 7, 2011
    is it a power capacitor that you have? normally a power cap is connected to the supply, i.e. positive leg of cap to red wire and negative lead of cap to ground. the resistor is sometimes connected in line with the capacitor to slow the charging process normally a 1k is what is put there to do this. the capacitor acts like a battery and minimises any cable losses that occur. ipods and usb are normally connected to inputs on the amp on other devices sometimes the connections for them are already wired into the pcb so all u would have to do is plug and play, but ya it would be the input.
     
    Last edited: Jul 9, 2012
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