D
Don Kuenz
I construct electronics circuits in the same manner that I write
software. Start with a simple circuit. Debug the circuit, add a wrinkle,
and then rinse and repeat until a full blown solution emerges.
For my purposes, the simplest electromechanical relay circuit uses a
push button switch to energize the coil and close the contacts. It seems
intuitively wrong to simply connect 24VDC to the coil. It seems that one
needs to insert at least a resistor in series to keep the coil from
burning up. Apparently a diode across the coil helps attenuate voltage
spikes.
So, is that the simplest circuit? A resistor in series with the coil and
a diode across the coil?
You might think that a simple Internet search ought to provide the
answer. It turns out that my question's too elementary or something.
Matter of fact, Internet searches provide less useful information with
each passing day. Search engines routinely ignore the very keywords
included in a query to winnow the results down. Search engines tend to
return the same useless information (sans keyword) repackaged by
websites that want to play the oracle and become everybody's universal
"go to" page it seems.
--
__
__/ \
/ \__/
\__/ Don Kuenz
/ \__
\__/ \
\__/
software. Start with a simple circuit. Debug the circuit, add a wrinkle,
and then rinse and repeat until a full blown solution emerges.
For my purposes, the simplest electromechanical relay circuit uses a
push button switch to energize the coil and close the contacts. It seems
intuitively wrong to simply connect 24VDC to the coil. It seems that one
needs to insert at least a resistor in series to keep the coil from
burning up. Apparently a diode across the coil helps attenuate voltage
spikes.
So, is that the simplest circuit? A resistor in series with the coil and
a diode across the coil?
You might think that a simple Internet search ought to provide the
answer. It turns out that my question's too elementary or something.
Matter of fact, Internet searches provide less useful information with
each passing day. Search engines routinely ignore the very keywords
included in a query to winnow the results down. Search engines tend to
return the same useless information (sans keyword) repackaged by
websites that want to play the oracle and become everybody's universal
"go to" page it seems.
--
__
__/ \
/ \__/
\__/ Don Kuenz
/ \__
\__/ \
\__/