A bridge rectifier to convert 12Vac to dc but the output voltage will be 16.98V so how do i change it to 12v?

The brigde rectifier is a '2KBP005 2A 50V' RS componant. And i need it to power a 20w 12vdc halagon lamp from a 12Vac supply, the supply has to be dc as i have other item which are running on dc from this curcuit from time to time.

I think the rectifier voltage output is 1.41 x the input voltage = 16.98V.

Also do these items heat up during use and would they need any additional cooling for continued use.A bridge rectifier to convert 12Vac to dc but the output voltage will be 16.98V so how do i change it to 12v?
You can run that bulb straight off the 12VAC. No problem. Don't waste your time with the rectifier unless you are planning to run electronics or charge a battery.A bridge rectifier to convert 12Vac to dc but the output voltage will be 16.98V so how do i change it to 12v?
I would guess that when you put a load on it, it will drop pretty close to 12VA bridge rectifier to convert 12Vac to dc but the output voltage will be 16.98V so how do i change it to 12v?
the light should handle it, just make sure your 12 v supply is big enough, they should'nt heat up to much, most 12v items run on 13.8v or so, the rating of ur rectifier is %26quot;2a- 50v%26quot;, make sure the load does exceed that or u will get some extra heat.A bridge rectifier to convert 12Vac to dc but the output voltage will be 16.98V so how do i change it to 12v?
Using 20 Watts you may want to have the rectifier on a heat sink. Also, if you want to run other items off it, your reserve based on a 2 amp rectifier isn't all that great. Higher capacity will give you greater life expectancy.

The voltage should drop once you put a load on it.

Since fully charged batteries are at 13.2 Volts and charging systems come in higher than that, the exact voltage isn't all that critical, especially with lamps.A bridge rectifier to convert 12Vac to dc but the output voltage will be 16.98V so how do i change it to 12v?
Hey, I see you took my advice.



First, to have the voltage back at 12 you'll need a voltage regulator. But, in order to push 20 watts you'll need a load of 7.2 ohms @ 1.66666 amps. The rectifier should be bigger too (handle more amps).



The power supply you have MUST be rated at 2 amps or higher for this to work. The higher the better.



I found a 12Volt 2Amp regulator (Part L78S12CV) at http://www.mouser.com and it's only $0.46.



This is where I get ALL my components. You should be able to find everything you need there.



You will need a heat sink on the regulator to keep it cool, for it will get very hot.



E-mail me, sparky3489@yahoo.com and I can draw up a schematic for you.