I got thinking the other day after reading an article that used a capicitor to power a small audio project, would it work to use 2 large value capacitors in series with the + terminal on one cap going to supply + (12 v) the - terminal of this cap connected to the + terminal of the other cap and the - terminal on cap #2 going to ground?, therefore providing a center tapped 12 volt supply (actually +6 and -6 v with a common ground), it works with 9 volt batteries to provide +9v and -9v with a common "ground". I don't have any large caps to try this myself.

 

Sorry to disappoint you, but it won't work.

 

Thanks David I was just curious.

 

hi earthshaker,

are you referring to this kind of circuit that deriving a dual rail supply from a single rail?

 

hi, what is the function of zener diode there??? on that circuits

thanks for the answer ^^

Originally posted by mozikluv@May 1 2005, 08:56 PM
hi earthshaker,

are you referring to this kind of circuit that deriving a dual rail supply from a single rail?

[post=7406]Quoted post[/post]​

 

Originally posted by zhi_yi@May 18 2005, 06:43 PM
hi, what is the function of zener diode there

They provide basic voltage regulation. Plus and minus 5.1 volts in this case.

 

oh, i c, thank you ^_^

erm.. please tell me how to use relay with 5 pin on it, 6 v can you give me the example with using relay on a circuit please? thanks

 

please tell me how to use relay with 5 pin on it

Two of the pins will be the coil connections. Two of them will be to the normally open or normally closed contacts and the other one may be the third contact if they are a change-over set.

6 v can you give me the example with using relay on a circuit please? thanks

The coil could have its energising voltage applied with a mechanical switch or a transistor.
It would be helpful to you if you knew the contact rating.