How much run time should I expect from the standard battery?
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On Friday, October 4, 2019, 11:46:33 AM PDT, Larry Rothman <nlroth@...> wrote:
Mike - Don't use anything else!
The NanoVNA was designed to use only a 5V supply, via the USB port.
The internal charge IC is both a 3.7V LiIon charger and 5V inverter combo - there are lots of comments about that chip on the forum.
The 5V output from that inverter MUST be well regulated as it supplies the mixer (612) chips.
If you want? longer run time - get a bigger Lithium battery. Do NOT use anything else or you'll damage stuff.
I used one from a cellphone that was 1100mAH - it WILL charge - but will take longer.
? ? On Friday, October 4, 2019, 2:30:19 p.m. GMT-4, mike miniver <wa7ark@...> wrote:
Is there an on-board voltage regulator that converts 5.0V from the USB to whatever is used internally?
If so, what external voltage range could be used in lieu of 5.0V from USB (but through the USB connector) to power the nanoVna?
I'm thinking of 4 rechargeable NiMH cells which would be about 5.2V fully charged, and about 4.4V when they need to be recharged?
WA7ARK
