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Relay''s coil-part# — Parallax Forums

Relay''s coil-part#

ArchiverArchiver Posts: 46,084
edited 2001-01-28 14:21 in General Discussion
I checked the part number and the suffux denotes the coil voltage.
G6A-274P-ST-US-DC5 is 5 volt DC. at 5 VDC the coil is listed for
200 mW. Check for seperate transistors or a darlington to handle the
power. Check this list for more information on transistors, power,
even servos to get more information.

Remember the coil voltage is what is needed to power the
electromagnet. The contacts can handle the full rating of the relay.

Keep in mind that there is a total amount of power the stamp can
handle and make sure your total is less. Even thought each pin can
handel 20 mA, the stamp cannot handle 10 such loads.

Check the Parallax site for examples. I think the Industrial
applications or servos should detail how to connect the pins and
even recomend some devices.




--- In basicstamps@y..., immolation@h... wrote:
> Hmm, i've only got one of these relay's so far, and i need about 9
> more so is there any easier way of just turning a 12v circuit
on/off
> from the stamp? Solid state relay's perhaps?
>
> Anyways, here is the exact relay i have
> : http://oeiwcs.omron.com/webapp/commerce/command/ProductDisplay?
> prrfnbr=552&prmenbr=316
>
> its the G6A-274P-ST-US
>
> Thanks for all your help guys
>
> --- In basicstamps@y..., davemucha@h... wrote:
> > One of the basics is that by the ratings you listed, you have an
> > electromechanical relay. They use an electromagnet to change the
> > state of the contacts and you can expect a bounce, see bounce in
> the
> > Stamp documentation for the characteristics.
> >
> > If you have this puppy connected to the same power as the stamp,
> you
> > may see switching problems. That is to say when you energize the
> > coil, you may see the Stamp power supply change (drop) Also, if
> you
> > are powering any high voltage/high power, make sure the Stamp
power
> > supply is not effected.
> >
> > The ratings on the side are typically maximum AC current, maximum
> DC
> > current and the maximum induction load, say for an electric
motor.
> > Just use the ones that apply to your application.
> >
> > There should be another rating and that is the coil voltage. It
> > might just be 24VAC on the side in letters, or printed on the
coil
> > inside of the unit if the case is clear. you can expect from
> around
> > 5 volts to 220 volts for typical relays, so you will need to get
> the
> > coil voltage to power it properly.
> >
> > Dave
> >
> >
> >
> >
> > --- In basicstamps@y..., "Tim Goldstein" <timg@k...> wrote:
> > > Go to http://www.ktmarketing.com/CNC.html and select the 5th
link
> > from the
> > > top titled "Parallel Port Hookup to Controller". At the bottom
of
> > that page
> > > you will find an explaination and a diagram on how to use a
> > transistor ( a
> > > 2N2222 will work fine) to drive a relay. Don't forget to get a
> > diode also or
> > > you will likely pop the transistor. Just replace the term PC
and
> > Printer
> > > port with Stamp.
> > >
> > > Tim
> > > [noparse][[/noparse]Denver, CO]
> > >
> > > >
Original Message
> > > > From: immolation@h... [noparse][[/noparse]mailto:immolation@h...]
> > > > Sent: Saturday, January 27, 2001 8:30 PM
> > > > To: basicstamps@y...
> > > > Subject: [noparse][[/noparse]basicstamps] Re: Relay's
> > > >
> > > >
> > > > Ok, i know absolutely nothing about transistors =) I'll go
pick
> > some
> > > > up tomorrow though, is there a specific rating that i should
> get?
> > And
> > > > am i correct in assuming that i just put them in series with
the
> > > > relay and the stamp?
> > > >
> > > > Thanks
> > > >
> > > > --- In basicstamps@y..., "Mark Hillier" <Mark@H...> wrote:
> > > > >
> > > > > > Hmm, i was planning on just hooking the relay directly
into
> > the
> > > > pins. The
> > > > > > relays that i have are marked on the side: 0.6A 125VAC 2A
> > 80VDC
> > > > 0.6A
> > > > > > 110VDC
> > > > >
> > > > > These are the *contact* ratings; they have nothing to do
with
> > the
> > > > > voltage or current required to operate the coil.
> > > > >
> > > > > > so looks like there is no way the stamp will put out
enough
> > for
> > > > this,
> > > > > > whats the alternative for hooking these up?
> > > > >
> > > > > You will need to drive a transistor with the Stamp pin and
> have
> > the
> > > > > transistor drive the relay coil.
> > > > >
> > > > >
> > > > > Mark Hillier, VE6HVW
> > > > > President, HVW Technologies Inc.
> > > > > Canadian Distributors of Parallax Products and other Neat
> Stuff
> > > > > Tel: +403-730-8603 Fax: +403-730-8903
> > > > > See our NEW BASIC Stamp Prototyping tools !
> > > > > http://www.hvwtech.com/stampstack.htm
> > > >
> > > >
> > > >
> > > >
> > > >
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