the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

fishfinder powers off when starting engin


Post ReplyPost New Topic
< Prev Topic Next Topic >
nauticstar 
Member - Posts: 1
Member spacespace
Joined: September 05, 2014
Location: Texas, United States
Posted: September 05, 2014 at 2:24 PM / IP Logged  
I have a new boat, about 1 month old. I purchased a fish finder and had it installed. Works good but when I crank the engine the fish finder powers off. Is there a way to have some type of capacitor and diode combo to keep 12 volts to the device for a few seconds to keep it from powering off when I start the engine? I am not an electronics expert by no means so please post any reply in basic details. Any help would be appreciated. Thanks in advance.
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: September 05, 2014 at 3:36 PM / IP Logged  
Push starting the boat would solve the problem, but I understand wanting to stay dry or not having big nor flat enough feet.
A cap and diode might work if the diode voltage drop is low enough and cap big enough. That's a combination of the unit's spec (lowest operating voltage) & current, and the voltage dip involved.
It could also be a weak or small battery or if the finder shares the same current path from the battery as the starter motor.
Options include a dc-dc converter or dual-battery system - tho being marine I'd assume a voltage sensing type battery isolator would be required (bad luck; more expensive and not as good as charge-light etc controlled relays).

Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Friday, June 18, 2021 • Copyright © 1999-2021 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer