Double bridge rectifier?

[Bart Bervoets]

Someone brought in a car battery charger (more expensive type)
which has 2 bridge rectifiers.
Now, there´s only 2 wires with live, either 6, 12 or 24v.
How do i connect those together, the owner pulled all the wires and i have
never seen a setup where they use 2 bridge rectifiers.
In parallell?
Thanks

Bart Bervoets

 

[Ross Herbert]

On Tue, 4 May 2004 15:40:44 +0200, "Bart Bervoets" <nekobe@online.be>
wrote:

Someone brought in a car battery charger (more expensive type)
which has 2 bridge rectifiers.
Now, there´s only 2 wires with live, either 6, 12 or 24v.
How do i connect those together, the owner pulled all the wires and i have
never seen a setup where they use 2 bridge rectifiers.
In parallell?
Thanks

Bart Bervoets

It seems that the designer might have had a quantity of bridge
rectifiers on hand which were possibly marginal for current handling
in that charger so he simply paralleled them instead of buying in new
stock.

Just connect ~ to ~ (2), + to + and - to - in order to parallel
connect both bridges. Make sure that the ~ links are not crossed on
each bridge. ie they must be in phase.

 

[The Real Andy]

On Wed, 05 May 2004 02:10:26 GMT, Ross Herbert
<rherber1@bigpond.net.au> wrote:

On Tue, 4 May 2004 15:40:44 +0200, "Bart Bervoets" <nekobe@online.be
wrote:

Someone brought in a car battery charger (more expensive type)
which has 2 bridge rectifiers.
Now, there´s only 2 wires with live, either 6, 12 or 24v.
How do i connect those together, the owner pulled all the wires and i have
never seen a setup where they use 2 bridge rectifiers.
In parallell?
Thanks

Bart Bervoets


It seems that the designer might have had a quantity of bridge
rectifiers on hand which were possibly marginal for current handling
in that charger so he simply paralleled them instead of buying in new
stock.

Just connect ~ to ~ (2), + to + and - to - in order to parallel
connect both bridges. Make sure that the ~ links are not crossed on
each bridge. ie they must be in phase.

Add it's sometimes cheaper to use two smaller rectifiers and a few
resistors than it is to by a big rectifier. Works just as well.