Humminbird Side Imaging Forums
Side Imaging Forums => 1197c SI, 1198c SI & 1199ci HD SI => Topic started by: goodwinexplorer on August 29, 2012, 07:14:51 AM
-
i run my unit via a 24 volt to 12 volts convert running at 12.5 volts, i have another unit running at 13.8 volts dc will the unit work any better as it is using less current if i use the higher voltage
has any one seen any difference?
bob
-
As long as the unit has 10.5 volts, it should work well.
You have to be careful about putting too much voltage
through a unit, or you will fry it. There is a limit, but I'm
not sure what it is. A normal 12 volt battery will be fully
charged at about 12.5 volts. These units were designed
to work with 12 volt battery systems. 13.8 volts seems
a bit high to me.
After having at least 10.5 volts, the other main thing is
having sufficient enough battery amperage to sustain
the unit.
It would be better to have a huge amp hour battery running with
at least 10.5 volts, than having a tiny amp hour battery running with
higher voltage. The smaller battery will crap out a lot sooner.
And once the smaller battery starts to get weak, the voltage
will start to drop.
-
"i have another unit running at 13.8 volts dc will the unit work any better as it is using less current if i use the higher voltage".
NO.
HB's will run on 10-20V DC input voltage.
Below 10V the power circuit can not convert/condition the input V to reliably run the unit. To get perfect straight line dc voltage the basic min rule of thumb is 2:1, 10V in 5V out. Above 20V the power circuit can not reliably clip the voltage to protect the unit from damage. This is why the units turn themselves off in either of those conditions.
-
"i have another unit running at 13.8 volts dc will the unit work any better as it is using less current if i use the higher voltage".
NO.
HB's will run on 10-20V DC input voltage.
Below 10V the power circuit can not convert/condition the input V to reliably run the unit. To get perfect straight line dc voltage the basic min rule of thumb is 2:1, 10V in 5V out. Above 20V the power circuit can not reliably clip the voltage to protect the unit from damage. This is why the units turn themselves off in either of those conditions.
+1
The 13.8 V supply will make you less susceptible to voltage drop through your cable.....You will have more "breathing" room.
-
I am not sure but believe I have read something on this site a long time ago that states that you must also have low amps. There should be something on this site that gives the parameters of the converter requirements. Do be careful so that you do not fry your system.
George
-
As a lecky.
the unit will have its own onboard voltage regulator taht will take voltage from 10-20vdc and convert it to a clea 5vdc and 12vdc or what eve rit needs. kind of like a PC.
yes in theory u could get volatge drop but i have measured my 1198c at full brightness and every thing running at 2.2A voltage drop will no be an isssue at all.
13.8vdc or 12.5v is ideal.
to be honest at home when playing with unit i run it of an old laptop PSU it runs at 18.7V still no issues, yes its close to teh limit but then again a laptop has a very clean power supply.
-
thanks