Re: Searching for engineer experienced in 24V vehicle electrical design.

From: Tony Williams (tonyw_at_ledelec.demon.co.uk)
Date: 03/12/05 

Date: Sat, 12 Mar 2005 10:36:44 +0000 (GMT)

In article <1110583017.328079.206530@g14g2000cwa.googlegroups.com>,
   GerberMultit00l <gerbermultit00l@yahoo.com> wrote:

> 7.) Fred Bloggs proposed a clever design idea. If I don't get
> anywhere with my current design I'll surely try this. Heck, I
> might just do it anyway for piece of mind. It performs a similar
> function to the FET solution I was contemplating but will
> probably be cheaper to implement.

> I would have to reduce the size of my main relay in order to fit
> a small secondary relay in my packaging space.

 May be worth asking the relay mfrs if they can supply
 a contactor with a main set of normal contacts and a
 separate contact pair which is early-make_late-break.
 Fred's solution could then be implemented with just
 one extra resistor.

 That also solves a minor problem on Fred's circuit,
 K2 failing to de-energise if there is no load. 

-- 
Tony Williams.