Re: Re: Re: White LED Lighting... was RE: Re: ADSL vs Cable

["Alancc" <alan.cc@xxxxxxx>]

Homevision has the diodes already built in the ULN2803A chip, have a look
at
page 106 in the HV bible.

Alancc

----- Original Message -----
From: i.bird@xxxxxxx <Ian@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Thursday, April 25, 2002 12:14 PM
Subject: RE: Re: Re: White LED Lighting... was RE: [ukha_d] Re: ADSL vs
Cable


> > Andy (going to do some garden lighting too)
>
> If you do and plan to relay control it from something computer related
be
aware of back emf and its effect on the control circuit. Opto-isolate
if
poss or add shunt diodes or whatever they are called. Saves you resetting
HV
every night (as happened to me) or worse.
>
> Ian (never afraid to blow something up through ignorance)
>
>



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