Author Topic: Pianet Duo - Why it needs a battery/power supply?  (Read 121 times)

Offline nonplus

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Pianet Duo - Why it needs a battery/power supply?
« on: November 18, 2018, 08:21:06 AM »
Hi, I've tested a Pianet Duo today, and asked myself why it needs a battery?
Couldn't find information about this.

I'm not really sure I've got a little electrical shock when closing the lid (aluminum cover) while the Pianet was turned on. Is this possible?
I mean it's only 9V isn't it? Is it save to touch?

Thanks
« Last Edit: November 18, 2018, 08:39:52 AM by nonplus »

Offline OZDOC

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Re: Pianet Duo - Why it needs a battery/power supply?
« Reply #1 on: November 18, 2018, 05:18:05 PM »

The Pianet built into the Clavinet/Pianet Duo is the version that uses electro-magnetic pickups.
The electronic requirements of both the Clavinet and Pianet only relate to a pre-amplifier to prepare the signal for output to an amplifier.
This is a low-voltage, low current requirement, more than adequately powered from a small battery.
There is no electrical danger involved in this circuit.

If you were powering the unit from a mains voltage adapter that managed to fail in a way that sent mains voltage to the keyboard's 9V input this could conceivably create a hazard.
But this would be a very unusual occurrence.

Perhaps shoes or clothing you were wearing built up a static electricity charge that discharged when you touch the Duo's metal components?

David