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May 9, 2019
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Update powersupply.md #119

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9 changes: 4 additions & 5 deletions hardware/powersupply.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,6 @@ description: Power Supply
permalink: /hardware/powersupply/
ref: hardware
lang: en
assigned-to: NONE
review-with: jonnya
---


Expand Down Expand Up @@ -83,8 +81,8 @@ this might look like the micro:bit is not working, but it is.

Because the nRF51822 is powered almost directly (there is only one BAT60 diode
between the supply and the nRF51 power rails), a fully charged **LiPoly battery**
that is specced to reach 4.2V **will be give greater than the 3.9V maximum that
the nRF51822 can withstand** [see below](#key-voltages)
that is specced to reach 4.2V **will be give greater than the [3.6V maximum that
the nRF51822 can withstand**](#key-voltages)

There is further information about the [battery connection and use](https://support.microbit.org/solution/articles/19000013982-how-do-i-power-my-micro-bit-/en) in our knowledgebase

Expand Down Expand Up @@ -132,9 +130,10 @@ the operating voltage range of any of the devices.
| Device | min | max | absolutemax
| NRF51 | 1.8V | 3.6V | 3.9Vabs
| KL26 | 1.7V | 3.6V | 3.8Vabs
| LSM303 | 1.71V | 3.6V | 3.6Vabs
| MMA8653FC | 1.95V | 3.6V | 3.6Vabs
| MAG3110 | 1.95V | 3.6V | 3.6Vabs

This table implies an operating voltage range of the micro:bit device as a whole
as being 1.95Vmin (dictated by the motion sensor) and
as being 1.8V min (for 1.5 variants) or 1.95V min (for 1.3* variants dictated by the motion sensor) and
3.6V max (dictated by all devices).