design

[muniasamyr]

My device power Spec is 12v/1A.I have connected totally 4 device into ed to one power supply board. How to design power supply?
please help me.....

[Binu]

Did each device take 1A?
Else the total current is 1A

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[muniasamyr]

No,sir Each device take the 12V/1A sir

[muniasamyr]

I had designed power supply with 7812 regulator and 25v/2A transformer ,, But single device is connected is work properly,if more than one device connected the device is not worked. Please reply me

[tibbu]

Hello muniasamyr,
I think u need 4-5A power supply for ur circuits. use separate 7812 for each ckt with good heat sink. 7812 can pass max currant upto 1A only.

Or if u need simple solution than use a SMPS supply used in computers. it has 12V 10-12A DC out put that is enough for ur ckt's.