Hi i am a new ckt designer.I want to charge my 12 v dc battery and then use it as an inverter .Will using rectifier ckt with parallel capacitor connected to the battery work.
Please help

 

what kind of help do u want?

 

He wants to blow up his battery with unlimited current instead of charging it with a controlled amount of current.
There was no mention of sensing a full charge and shutting down the charger instead of over-charging.

 

Hi i am a new ckt designer.I want to charge my 12 v dc battery and then use it as an inverter .Will using rectifier ckt with parallel capacitor connected to the battery work.
Please help

What's your question?

I have one for you: What's your source of power with which to charge the battery? And here's another: Why use the filter capacitor? Your battery likely has much large capacity than the capacitor.

 

What's your input source coming from?

How big / what type is the battery?

 

sorry.........i dnt mention da details.
I want to give an ac supply then using rectifier circuit will convert to dc.And use capacitance for the purpose of filtering.
Now my problem is how do i sense the charging of the battery when it is fully charged.

 

I used 570 micro farad capacitor.How do i relate capacitance value and battery voltage.

 

sorry.........i dnt mention da details.
I want to give an ac supply then using rectifier circuit will convert to dc.And use capacitance for the purpose of filtering.
Now my problem is how do i sense the charging of the battery when it is fully charged.

 

You need to learn about how a battery charger works.

 

sorry.........i dnt mention da details.
I want to give an ac supply then using rectifier circuit will convert to dc.And use capacitance for the purpose of filtering.
Now my problem is how do i sense the charging of the battery when it is fully charged.

Again, filtering is useless with a battery (HUGE capacitor) in parallel with a regular (TINY) capacitor.

If you want to avoid overcharge as simply as possible, you may want to employ a constant voltage regulator such as one based LM317T. This will reduce current as the voltage nears the setpoint. There are many other (and better) techniques for determining state-of-charge and controlling current based on that, but none quite as simple. What type of battery are you charging? Constant voltage is not so good a strategy for modern NiMH.

 

Yes..can you please suggest me a link where i can get it.

 

Yes..can you please suggest me a link where i can get it.

google.com

 

i am charging a 12v dc battery

 

Thnx..i wll try it using a voltage regulator.

 

Hello,

What kind of batteries do you want to charge?
In the battery university you will find a lot of information:
http://batteryuniversity.com/

Here is also a page from the EDUCYPEDIA on batteries and battery chargers:
http://www.educypedia.be/electronics/componentbattery.htm

Bertus

 

sorry.........i dnt mention da details.
I want to give an ac supply then using rectifier circuit will convert to dc.And use capacitance for the purpose of filtering.
Now my problem is how do i sense the charging of the battery when it is fully charged.

If my guess is correct you're from India, and you need to take your 240 VAC 50 Hz (that often varies from 200 to 280V) to charge a 12V battery?

Do you not have an auto parts store there? They would be able to sell you one for far less than what it could cost to build one.

As to your converting the 12V back up that's another story.