TractorByNet.com - View Single Post - My Diesel Storage and Transfer Set-up

patrick_g · 03-27-2008, 12:31 PM

Thomas, The jump pak is another good idea. I don't have one, as I favor a battery charger but they are a good thing too. Having both is not a bad idea. One consideration is the amp hour capacity of the jump pak. If you transfer much fuel you may flat out the little battery in the jump pak before you get done.

Buying a full wave bridge module (little box with 4 connections, two for the input AC and two for the output DC) and wiring it up to the transformer is trivial but... The first time you accidentally touch the DC leads together the little FWB module may give up the ghost. Some interesting things happen: 1. you get a current spike that may exceed the instantaneous current rating of the device, 2. the sparks you create with the intermittent contact interrupting the current flow allow the inductance of the transformer to generate some hefty voltages which may exceed the max reverse voltage rating of the device.

To build a circuit that will not self destruct requires short circuit/overload protection and starts getting above trivial construction. Any of several folks here could tell him how to wire the FWB module as it truly is trivial and some of us cold design a self protected circuit but...

Just buying a battery charger rated for at least (and hopefully more) more than 10 amps will git 'er done. A Jump Pak may be satisfactory too, if you don't need to run the pump very long or very often. Once deeply discharged it takes a while to charge them back up. Both charger and Pak are good ideas and provide a tool for other uses than fuel transfer. Whether or not the Pak will pump long enough or frequently enough is the question I can't answer without more information about usage of the fuel system. How many gal/min will the pump transfer? Now many amp-hours does the candidate Jump Pak have?

Pat

03-27-2008, 12:31 PM	#95 (permalink)
patrick_g Elite Member Join Date: Jul 2006 Location: South Central OK Posts: 2,679	Re: My Diesel Storage and Transfer Set-up Thomas, The jump pak is another good idea. I don't have one, as I favor a battery charger but they are a good thing too. Having both is not a bad idea. One consideration is the amp hour capacity of the jump pak. If you transfer much fuel you may flat out the little battery in the jump pak before you get done. Buying a full wave bridge module (little box with 4 connections, two for the input AC and two for the output DC) and wiring it up to the transformer is trivial but... The first time you accidentally touch the DC leads together the little FWB module may give up the ghost. Some interesting things happen: 1. you get a current spike that may exceed the instantaneous current rating of the device, 2. the sparks you create with the intermittent contact interrupting the current flow allow the inductance of the transformer to generate some hefty voltages which may exceed the max reverse voltage rating of the device. To build a circuit that will not self destruct requires short circuit/overload protection and starts getting above trivial construction. Any of several folks here could tell him how to wire the FWB module as it truly is trivial and some of us cold design a self protected circuit but... Just buying a battery charger rated for at least (and hopefully more) more than 10 amps will git 'er done. A Jump Pak may be satisfactory too, if you don't need to run the pump very long or very often. Once deeply discharged it takes a while to charge them back up. Both charger and Pak are good ideas and provide a tool for other uses than fuel transfer. Whether or not the Pak will pump long enough or frequently enough is the question I can't answer without more information about usage of the fuel system. How many gal/min will the pump transfer? Now many amp-hours does the candidate Jump Pak have? Pat __________________ I'm voting for the "......." ticket because I believe the government will do a better job of spending the money I earn than I would.