Date:         Sat, 5 Aug 2017 00:02:05 -0700
Reply-To:     Dick Wong <sailingfc@DSLEXTREME.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dick Wong <sailingfc@DSLEXTREME.COM>
Subject:      Re: Time Delay LED Lighting Circuit
Comments: To: David Beierl <dbeierl@ATTGLOBAL.NET>
In-Reply-To:  <CAMOH8L+VVn=o3jZDKgRw7M_inZ5g8KUNqt5V9AOmUcHOycrZcw@mail.gmail.com>
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David,

Both diodes are 1N418.  Both transistors are BC547. The cap is a 47uf 16V.

HTH.

-Dick-


-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of David Beierl
Sent: Friday, August 4, 2017 11:34 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Time Delay LED Lighting Circuit

That is a very clever circuit, and cleverly laid out as well.

BD 433 is a 22 volt GP NPN transistor, E C B left to right on top surface.
It does the switching.  Its base is connected to presumably the emitter of the next transistor (if it's an NPN type as well).

It would be really nice to know what's written on the fronts of those two transistors, also the complete legend on the diodes.

Yrs,
d

On Sat, Aug 5, 2017 at 1:32 AM, Alistair Bell <albell@shaw.ca> wrote:

> Dick,
>
> That looks nice and compact, david or others, what's going on there 
> beside the obvious?
>