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none · 01-02-2004, 04:21 PM

Quote: Originally Posted by Ricky327

Ok...maybe I misunderstood what tank really meant :

So that tank circuit was just there to smooth out the "AC" components of the supply during cranking. Just as found in a power supply circuit where you have a smoothing capacitors...it will not keep the 12V during cranking.

If smoothing was all needed then that diode shouldnt be there at all as the voltage never goes negative.

I thought the whole idea was to survive a crank due to heavy load from the starter motor?

Correct me if Im missing something here

Yes that is what it is supposed to do, but it doesn't need to supply the full 12v - the starter doesn't take ALL the juice. Smoothing is all that is needed with a good dc-dc PSU.

Not sure what you mean by "AC" - I'm talking about dc-dc PSUs here.

01-02-2004, 04:21 PM	#11
none Maximum Bitrate Join Date: Sep 2003 Posts: 586 My Photos: ()	Quote: Originally Posted by Ricky327 Ok...maybe I misunderstood what tank really meant : So that tank circuit was just there to smooth out the "AC" components of the supply during cranking. Just as found in a power supply circuit where you have a smoothing capacitors...it will not keep the 12V during cranking. If smoothing was all needed then that diode shouldnt be there at all as the voltage never goes negative. I thought the whole idea was to survive a crank due to heavy load from the starter motor? Correct me if Im missing something here Yes that is what it is supposed to do, but it doesn't need to supply the full 12v - the starter doesn't take ALL the juice. Smoothing is all that is needed with a good dc-dc PSU. Not sure what you mean by "AC" - I'm talking about dc-dc PSUs here. Last edited by none : 01-02-2004 at 04:24 PM.