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Gear / Technical Help => Remote Power => Topic started by: Jason R on July 30, 2004, 03:06:10 PM

Title: DAP1 battery question
Post by: Jason R on July 30, 2004, 03:06:10 PM
Can I power a DAp1 with a 12 volt. 
Title: Re: DAP1 battery question
Post by: jpschust on July 30, 2004, 03:07:17 PM
if you regulate it down to 6
Title: Re: DAP1 battery question
Post by: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8.  Not 12, though.
Title: Re: DAP1 battery question
Post by: nic on January 22, 2005, 07:28:35 PM
Quote from: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8.  Not 12, though.

the DAP1 will run on a 6v?
Title: Re: DAP1 battery question
Post by: leegeddy on January 22, 2005, 07:33:16 PM
Quote from: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8.  Not 12, though.

da-p1 will run safely at 13.5v. i run mine on 12v. even the output of the da-p1's ac adaptor is 13.5v, although it states 7.2v on the box.

marc
Title: Re: DAP1 battery question
Post by: jk labs on January 22, 2005, 10:52:49 PM
Quote from: leegeddy on January 22, 2005, 07:33:16 PM
Quote from: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8.  Not 12, though.

da-p1 will run safely at 13.5v. i run mine on 12v. even the output of the da-p1's ac adaptor is 13.5v, although it states 7.2v on the box.

marc


?????
I have measured the UNLOADED voltage out from the DA-P1 AC adaptor to be 13.8 Volts DC.  But it drops to a stable & well regulated 7.5 Volts (measured at the DA-P1 input terminal) when delivering the 650 to 800 or so mA the DA-P1 uses.

There are two power supply capacitors within the DA-P1 that see the DC input voltage. They are both rated for 10 Volts operation.

I take your statement above to mean that the DC-DC converter tackles a fully charged lead acid (13.6-14.5 Volts I imagine depending on your charger?).

Heat should not be a problem for the DC-DC converter. But linear regulators develop heat in proportion to the voltage across and heat shortens the expected lifetime of semiconductors. 

I.e., I would not exceed 10 Volts when powering the DA-P1 with an external DC source.   
 
Jon
Title: Re: DAP1 battery question
Post by: Tim on January 23, 2005, 11:34:23 PM
Quote from: luvean on January 22, 2005, 07:28:35 PM
Quote from: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8. Not 12, though.

the DAP1 will run on a 6v?


that's all that anyone I know has ever used with it...
Title: Re: DAP1 battery question
Post by: leegeddy on January 23, 2005, 11:42:11 PM
Quote from: jk labs on January 22, 2005, 10:52:49 PM
Quote from: leegeddy on January 22, 2005, 07:33:16 PM
Quote from: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8.  Not 12, though.

da-p1 will run safely at 13.5v. i run mine on 12v. even the output of the da-p1's ac adaptor is 13.5v, although it states 7.2v on the box.

marc


?????
I have measured the UNLOADED voltage out from the DA-P1 AC adaptor to be 13.8 Volts DC.  But it drops to a stable & well regulated 7.5 Volts (measured at the DA-P1 input terminal) when delivering the 650 to 800 or so mA the DA-P1 uses.

There are two power supply capacitors within the DA-P1 that see the DC input voltage. They are both rated for 10 Volts operation.

I take your statement above to mean that the DC-DC converter tackles a fully charged lead acid (13.6-14.5 Volts I imagine depending on your charger?).

Heat should not be a problem for the DC-DC converter. But linear regulators develop heat in proportion to the voltage across and heat shortens the expected lifetime of semiconductors. 

I.e., I would not exceed 10 Volts when powering the DA-P1 with an external DC source.   
 
Jon

jon, thanks for the detailed specs. i've ran the da-p1 with a 12v sla without any issues, but i will drop the voltage down further.

marc
Title: Re: DAP1 battery question
Post by: nic on January 24, 2005, 12:06:49 AM
Quote from: Tim on January 23, 2005, 11:34:23 PM
Quote from: luvean on January 22, 2005, 07:28:35 PM
Quote from: Craig T on July 30, 2004, 03:23:09 PM
I believe it really wants 7.5V, but will operate on 6-8. Not 12, though.

the DAP1 will run on a 6v?


that's all that anyone I know has ever used with it...

sweet!
I thought I was going to end up carrying 2 types of lead   :)
Title: Re: DAP1 battery question
Post by: Tim on January 24, 2005, 12:07:57 AM
:)
Title: Re: DAP1 battery question
Post by: F.O.Bean on January 24, 2005, 02:15:33 AM
6v 7.2amp runs it for AWHILE too, i used to get 10hrs+ from one 6v7.2a