12v 1amp power supply

[barsteward]

Can anyone tell my if its ok to run this

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from a 1 amp usb socket in the motorhome? if not could you recommend an adapter? looking at possibly permanently wiring it in but for the moment just want to trial it.

Thanks in advance
Les

 

[Robert Clark]

I think USB is only 5 volts

 

[Two on Tour]

I think USB is only 5 volts

The specs on unit the OP linked to states 12 volt @ 1A so as stated the USB is a non starter.

 

[Two on Tour]

Easily done from a normal cigar type outlet on your van, but you will need to know what plug type is require into the router so you can purchase the correct one.

 

[barsteward]

Thanks. to both of you

I think its the 5.5m barrel of which I think I have one from an old sat nav will check shortly.

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[tonka]

Just backing up above, USB no go.
12v cigarette socket or hella. Then a DC power lead, most common is the 2.1mm DC plug but you would need to check that.

 

[denisejoe]

I have the same and got local computer /technical shop to make up a lead and put a voltage regulator in to keep it to 12v https://www.ebay.co.uk/p/Car-DC-12v...ctor-Power-Supply-Noise-Regulator/23008044957

 

[autorouter]

The problem with a direct '12V' supply from the battery is that it varies from 11 to nearly 15 volts as the battery charger decides. The router will be expecting a nice steady 12V plus or minus half a volt. Anything outside that might cause problems. That's why you need a 12V voltage stabiliser like denisejoe says. The 4 amp bit is fine, it just means it is capable of supplying 12V at whatever amps the device wants, up to a maximum of 4 amps.

You could wire the stabiliser to a 12V cigarette-lighter type socket, then buy or make a cable with a cigarette-lighter plug to round DC plug.

Note that there are two types of 5.5mm round plug, with a 2.1 mm or 2.5mm hole. One easy way to distinguish them is that a 2.5mm drill bit slides into the 2.5mm one but not the 2.1mm.

 

[barsteward]

Thanks for that voltage reg on order

 

[Off da Grid]

You can get those 12v socket to multi voltage adapters, we got ours from maplins but Amazon sell them. It has multiple types of connectors and voltages from 4.5v upto 12v but is regulated.
Really useful as you can use it for loads of different gadgets. Saving on adapters.

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[HandyAndy]

Thanks for that voltage reg on order

Ahh was going to mention that you needed a voltage regulator..
I bought this one for mine if I'm ever not on EHU.
I can also change the settings to produce whatever power I need if I wanted to plug something else in.
Ahh, doesn't seem to be available at the moment... but you get the idea.

Amazon product ASIN B015306ATQ

 

[autorouter]

There are three kinds of regulator: buck, boost and buck/boost.
A buck regulator reduces voltage, eg a USB adaptor that outputs 5V from 10 to 15V input.
A boost regulator increases voltage, such as a laptop adaptor that outputs 19V from a 10 to 15 volt input.
A buck/boost regulator will increase or reduce the voltage as required, eg a 12V regulator that outputs a steady 12V from a 10 to 15V input.

Some of the cheaper 12V regulators are simple buck regulators, ie they only reduce, so if the input voltage falls to less than 12.5V, the output voltage reduces too.

 

[Richard n Ann]

There are three kinds of regulator: buck, boost and buck/boost.
A buck regulator reduces voltage, eg a USB adaptor that outputs 5V from 10 to 15V input.
A boost regulator increases voltage, such as a laptop adaptor that outputs 19V from a 10 to 15 volt input.
A buck/boost regulator will increase or reduce the voltage as required, eg a 12V regulator that outputs a steady 12V from a 10 to 15V input.

Some of the cheaper 12V regulators are simple buck regulators, ie they only reduce, so if the input voltage falls to less than 12.5V, the output voltage reduces too.

4 ? What about Linear regulators? (I know they're shite ?)

 

[autorouter]

4 ? What about Linear regulators? (I know they're shite ?)

Yes you're right, I should have said that when considering the input and output voltages, there are those three types of regulator. When it comes to the technology of changing the voltage, there's lots of different types, including linear regulators.
Linear regulators are not very efficient, but they're very quiet if you want to minimise electrical noise, in a hifi amp for example.