|
|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Beef Dog Food | IgorSushko.com | Corporate |
|
|||||||
| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
![]() |
Show Printable Version |
Subscribe to this Thread
|
|
|
Thread Tools |
|
#1
|
||||
|
||||
|
Electrical question.
How do I step 12v dc down to 5v dc? It is for a home build car alarm.
__________________
English is not my first Language. |
|
#2
|
|||
|
|||
|
Re: Electrical question.
if you use just a small amount of current, a 3 pin linear voltage regulator from Radioshack may do the trick. but be warn, they waste a lot of energy by heat.
you can also buy DC to DC converters, where i'm not sure(Radio shack?) another option is to find a power adaptier like for a cell phone or CD player that puts out 5volts and wire it to work. 5 volts isn't that common though. the closest you may find is 4.5V or 6.0V lastly, if you know the resistance of the 5V circuit, you can do a little math and find a resistor to use in a voltage divider circuit (i think thats what its called) if it was me, i would use a combonation of a resistior to knock down the voltage, then a voltage regulator, and a capatior to clean it up a little.
__________________
Daily driver: 1995 Buick Regal Custom 3.8L 4T60-E 150K miles Gone: 1994 Saturn SL2 1.9L MP3 168,666 miles EPA 608 Universal Certification EPA 609 Certification |
|
![]() |
POST REPLY TO THIS THREAD |
![]() |
|
|