Jump to content

step down transformer build help


Recommended Posts

looking to step down the 12 volt out from the cig lighter to 5-7 volts so that the device I want to connect doesn't fry.

Any help on how to accomplish this would be greatly appreciated.

Thanks.

Rolex you sicken me.

this_zpszasq3bwt.gif

Just let me finish my pie

~ Juice

Link to comment
Share on other sites

I think you will need something called a 5v regulator. You can look up a circuit design online most likely.
Then you could get one of these and wire it up http://www.ebay.com/itm/12v-Male-Car-Cigarette-Lighter-Socket-Plug-With-Fuse-Connector-Conversion-Outlet-/331079406572?pt=US_Adapters&hash=item4d15ded3ec

Hope I helped, I've never built anything like this but I have watched a few videos online about building electronics.

Pioneer DEH-X6600BT

(1) Rockford Fosgate R1200-1D

(1) Alpine 1242D 12" Type R ported 32-35hz

Link to comment
Share on other sites

Thanks guys. I was overthinking this and looking to build a circuit. Instead I found a couple schematics on making one and after I buy the parts and put the time in it's cheaper just to buy a pre fab one. If I was making more than 5 then it would be worth it. I may also just go through my junk cell phone charger drawer and see if any of those spit out 5-6 volts dc :)

Rolex you sicken me.

this_zpszasq3bwt.gif

Just let me finish my pie

~ Juice

Link to comment
Share on other sites

all you need is a 7805. look that bad boy up.

whats your load? depending on the load you may or may not need a heat sink

Buyer/Seller Feedback Thread: http://www.stevemead...5015-bump4life/
MB C220 153 Trunk Car Build Log: http://www.stevemead...d/#entry1840136
MB C280 Ipad Dash SQ Build Log: http://www.stevemeadedesigns.com/board/topic/194484-bump4lifes-new-benz-tony-c-relay-kit-pictures-ce-electric-audison-front-stage-installed/
My SPL Log: http://www.stevemead...__fromsearch__1

BMW M340 xDrive

Stock, for now. Corner Load 10" maybe soon. But does 10s in the 1/4...
Best Scores out of a trunk
153.0 sealed legal full tilt clamped 5524 @ 42 hz
154+ windows down, 155+ kick

Link to comment
Share on other sites

  • 3 months later...

As stated a 7805 was all I needed. here's the down and dirty in pics.

Made for less than $5 and built my way. 9-20 volts in with a constant 5 volts out!

WP_20141006_23_04_17_Pro__highres_zpsac5

WP_20141012_13_38_57_Pro_zps81e9e732.jpg

WP_20141013_00_00_09_Pro_zps98089f35.jpg

WP_20141019_13_58_49_Pro_zps5d397c96.jpg

BTW, the 1st pic was parts I cannibalized from an old VCR. I ended up buying new parts but the VCR parts would have been fine.

This will do 2 amps max with the heat sink

Rolex you sicken me.

this_zpszasq3bwt.gif

Just let me finish my pie

~ Juice

Link to comment
Share on other sites

As stated a 7805 was all I needed. here's the down and dirty in pics.

Made for less than $5 and built my way. 9-20 volts in with a constant 5 volts out!

WP_20141006_23_04_17_Pro__highres_zpsac5

WP_20141012_13_38_57_Pro_zps81e9e732.jpg

WP_20141013_00_00_09_Pro_zps98089f35.jpg

WP_20141019_13_58_49_Pro_zps5d397c96.jpg

BTW, the 1st pic was parts I cannibalized from an old VCR. I ended up buying new parts but the VCR parts would have been fine.

This will do 2 amps max with the heat sink

looks good man! a lot of devices run on 5 volts dc.

Buyer/Seller Feedback Thread: http://www.stevemead...5015-bump4life/
MB C220 153 Trunk Car Build Log: http://www.stevemead...d/#entry1840136
MB C280 Ipad Dash SQ Build Log: http://www.stevemeadedesigns.com/board/topic/194484-bump4lifes-new-benz-tony-c-relay-kit-pictures-ce-electric-audison-front-stage-installed/
My SPL Log: http://www.stevemead...__fromsearch__1

BMW M340 xDrive

Stock, for now. Corner Load 10" maybe soon. But does 10s in the 1/4...
Best Scores out of a trunk
153.0 sealed legal full tilt clamped 5524 @ 42 hz
154+ windows down, 155+ kick

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   1 Member, 0 Anonymous, 2010 Guests (See full list)

×
×
  • Create New...