TopBand: Remote Beverage Switching

William H. Launer
Sun, 29 Dec 1996 20:14:38 -0600

Larry va3lk / wa3zia wrote:

>This is not without a penalty however.  The relay will be MUCH MUCH slower
>in release time with the diode across the coil terminals.

Larry is right, the resulting dropout delay could be a problem where
fast switching is necessary (keying relay, etc), but not a problem in
most applications.  There are schemes to shorten the delay, such as
using a Zener in series with the suppression diode.  I don't have the
data at my fingertips, but might be able to find it if anyone is

73, Bill wb0cld

Bill Launer
St. Charles, MO []
qrp-l #279      qrp arci #3551
Grid Square EM48RT

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