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Re: Lighting questions

To: Tony Lum <tlum@flash.net>, quattro group <quattro@coimbra.ans.net>
Subject: Re: Lighting questions
From: Huw Powell <human@nh.ultranet.com>
Date: Sat, 08 Aug 1998 21:57:20 -0400
References: <3.0.2.16.19980808174954.3187ed60@pop.flash.net>
Sender: owner-quattro@coimbra.ans.net

> Its standard practice in ATE (automatic test equipment) which use hundreds
> of remote contolled relays to place a backwards diode (cathode side to
> +12V) in parallel with the relay's coil to suppress the inductive spike you
> get when you cut the power to the relay.  Many relays have this suppression
> diode built in since the spike can take out your solid state driver.

Yes, many of the ex-Audi relays in my parts bin have the device in their
little diagram.  Hmm.

-- 
Huw Powell

References:
- Re: Lighting questions
  - From: Tony Lum <tlum@flash.net>

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