Powering a Zoom H4n via USB

Since the Zoom H4n is providing 48V phantom-power two two microphones at once and 7V plugin-power for a lavalier and for any type of recording I can switch between cameras but need one, single, continuous sound-recording.....
The 2 AAA-batteries in the H4n are always dead.
It does have a 230V power-adapter.
In fact, I have two that fit it.
But that's no good on the road.

For my cell-phone I now have this cheap USB-power-supply that I can recharge at any USB-port (and even hand through that power to the real device to charge that too.
Thus only requiring a single USB-port).
As the H4n also runs on 5V, I tried to solder myself a USB-to-H4n adapter and it actually worked!
(GND on the outside, +5V on the center contact)

The nice thing is that the H4n automatically switches between it's batteries and external power.
So now I can even attach USB-power, switch the batteries while drawing USB-power and then run on the fresh batteries when USB-power dies too.


Anonym hat gesagt…

What size is the plug for the H4n - 2.1mm, 2.5mm, 3.1mm, etc?

Marcus Wolschon hat gesagt…

I'll have to look it up.
Just taking your H4n into the shop is the simplest way of solving this. ;)