From: Neil <picdude3@narwani.org>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Mon, 27 Apr 2020 11:45:55 -0700
Subject: Re: [EE] Voltage regulator with high input voltage
Thread-Topic: [EE] Voltage regulator with high input voltage
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Isaac,

What's the purpose of V+ in this?

Cheers,
-Neil.



On 4/27/2020 2:36 PM, Isaac Marino Bavaresco wrote:
> Something like the image below.
>
> Change the Transistor, Zener, capacitor and resistor to your needs.
>
> Cheers,
>
> Isaac
>
>
>
> Em 27/04/2020 14:24, David C Brown escreveu:
>> I am designing a current monitor for my e-bike.  Using an INA169 hi side
>> current senor into a mid range PIC with a two digit LED display.
>>
>> Problem is getting the 5 volts for the PIC from the e bike battery which=
 is
>> nominally 36v but can rise to over 40 volts when fully charged.  Most sm=
all
>> linear regulators seem to be rated at 36v..
>>
>> Current would be a couple of milliamps with the display off (most of the
>> time).  Nearer 100 with the display on..
>>
>> Any suggestions
>>
>>
>> __________________________________________
>> David C Brown
>> 43 Bings Road
>> Whaley Bridge
>> High Peak                           Phone: 01663 733236
>> Derbyshire                eMail: dcb.home@gmail.com
>> SK23 7ND          web: www.bings-knowle.co.uk/dcb
>> <http://www.jb.man.ac.uk/~dcb>
>>
>>
>>
>> *Sent from my etch-a-sketch*
>
>
>

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