Date:         Mon, 31 Jul 2017 12:20:21 -0700
Reply-To:     Alistair Bell <albell@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Alistair Bell <albell@SHAW.CA>
Subject:      Re: Time Delay LED Lighting Circuit
Comments: To: Neil N <musomuso@GMAIL.COM>
In-Reply-To:  <CAB2RwfiryvHjQ9+LiBksPyDuqEvY28B=1LN_KXu2yiQaHXWENQ@mail.gmail.com>
Content-Type: text/plain; charset=us-ascii

I saw your circuit, looks like the resistor (470ohms) used to drop voltage to foraged voltage required by led. And the cap is there to provide the power when main power removed. It's the draining of the cap and resulting voltage drop profile that I don't understand. Maybe it will have the led bright for a while then rapidly dim and off, or maybe it will start to dim immediately and then when forward voltage is insufficient the led winks out.

Ab

> On Jul 31, 2017, at 11:59 AM, Neil N <musomuso@GMAIL.COM> wrote:
> 
> Gosh darn. Sorry. I did check the link. Not sure why it now does what it does.
> 
> (when I click on it, a page with a bunch of text comes up)
> 
> Link to image of schematic on my google photos:
> 
> https://photos.app.goo.gl/9taHoZwFDyv37H1l1
> 
> Neil.
> 
> 
>> On 7/31/17, Neil N <musomuso@gmail.com> wrote:
>> 
>> 
>> Link to image of schematic for a time delay light:
>> 
>> http://www.learningaboutelectronics.com/images/chargeCapacitortolightLEDschematic.jpg
> 
> 
> --
> Neil n
> 
> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
> 
> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
> 
> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>

> 
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