The T-Rex Fuel Tank Junior, a 9V power supply for effects pedals with five isolated outputs.
Fuel Tank Junior is a lean, mean power supply that will handle virtually any 9-Volt effects pedal – and then some.
Just like its big sister Juicy Lucy, Junior features 5 isolated outputs that deliver clean, quiet power to your pedals. Don’t let the compact size of this unit fool you – Fuel Tank Junior is a real powerhouse!
Fuel Tank Junior comes with 10 standard pedal cables and a link cable that lets you power 5 separate units (total maximum of 120mA) off a single output.
A special serial cable (voltage doubler) – also included – lets you combine 2 outputs into 1, so you can even power your classic 18-Volt pedal alongside your 9-Volt units.
Fueltank Junior comes with all the cables you need:
- link cable (daisy chain) with 5 DC plugs
- DC-to-DC cables 50cm
- DC-to-DC cables 25cm
- voltage doubler cable that doubles the voltage to 18 volt
Listen up there is a lesson to learn!
When you want to power your pedal from the FuelTank Junior or any other power supply, there are two things you need to know:
You need to find this information in the pedal users manual or on the pedal. Most pedals today accept 9 or 12 volt. Some need 18 volt. If there is a battery container in the pedal it usualy just needs 9 volt, but often it also accepts 12 volt.
All T-Rex pedals can run on 12 volt. Some (the ones with battery container) can also run on 9 volt. But they accept any voltage between 9 and 12 volt.
If your pedal get's less than the voltage it needs, there is no danger. It will not break or burn. It just sounds different or says nothing at all. Some musicians even use old batteries, that gives less power and therefore the pedal gives another sound - which they like.
If your pedal get's more voltage than it needs, there is danger that the pedal will break or even burn. If you are lucky, it will have a fuse inside (to be replaced), but most pedals don't.
You need to find this information in the pedal users manual or on the pedal in terms of a sticker, if you are lucky. If your pedal has a battery container, it usually consumes very little power, like 20 - 40 mA. If your pedal comes with an adapter, it consumes a lot more power. That can vary from 100 mA to 1.200 mA, or even more.
Now you are ready to buy and connect your pedal(s) to a power supply.
If your pedal(s), like most other pedals on the market, accepts 9 volt DC and needs less than 120 mA, you have come to the right place, FuelTank Junior. Just connect the pedal to one of the five outputs on the JuicyLucy.
If you have more pedals that accept 9 volt and together use less than 120 mA, you can run them all from one output on the Fueltank Junior - by using the link cable. One end of the link cable goes in one of the outputs on the FuelTank Junior. The other plugs on the link cable goes into the pedals one by one. The order is irrelevant.
If you've got a pedal which accepts 12 volts only you cannot use FuelTank Junior. You either need FuelTank Classic or FuelTank Juicy Lucy, both deliver 12 volts (amongst other things).
If you have a pedal that accepts 18 volts only and consumes no more than 120 mA, use the yellow voltage doubler cable which comes with the Junior. It taps 9 volts each from two outputs on the Junior and converts them to 18 volts. If your pedal consumes more than 120 mA you cannot use FuelTank Junior.
If you have a pedal that needs 12 AC voltage and consumes less than 500 mA (like the T-Rex Replica), you cannot use the Junior. You need to use the FuelTank Classic. It gives 12 volt AC - among other things.
Please note that a lot of 9 volt pedals on the market accepts 12 volt. Lot's of people are not aware of this, because they usually juts use a 9 volt battery to drive the pedal or a 9 volt power supply.
Please note that all FuelTanks and all T-Rex pedals have minus as center, which is normal on the market. That means the center pin in the DC plugs. Very few pedals use the opposite: Center pin is positive. If you have a twisted pedal like that, you need to find a changer cable somewhere on the market, if you want to use a normal power supply, that has minus as center.
Please note the power distributors on the market. People and manufacturers call them power supplies, even though they are not. They don't have a transformer core inside. They are usually feeded by an adapter and the power is then just distributed in the box to more output plugs - sometimes in different voltage. Often all outputs share the same ground, which can give noise.
T-Rex FuelTanks are all real power supllies with real transfomers inside, developed in Denmark and produced by a Danish transformer company, that works together with T-Rex.
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