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Sci.Electronics.Basics -> Using a relay
There are 13 messages in this thread.
You are currently looking at messages 1 to 13.
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Author: Jan NielsenDate: 11:29 24-04-07
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I got a relay I cant figure out how to use, it as 5 connectors.
Its a finder 36.11.9.005.0000 5V(dc) 10A 250V(ac), I dont have a
datasheet for it.
The legs are like this
O_O 1_2
OOO 345
1=NO (Normally open?)
2=NC (Normally closed?)
3=no label
4=COM
5=no label
Anyone know how to use this, if its even something I can use :)
/Jan
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Author: John PopelishDate: 11:33 24-04-07
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Jan Nielsen wrote:
> I got a relay I cant figure out how to use, it as 5 connectors.
>
> Its a finder 36.11.9.005.0000 5V(dc) 10A 250V(ac), I dont have a
> datasheet for it.
>
> The legs are like this
> O_O 1_2
> OOO 345
>
> 1=NO (Normally open?)
> 2=NC (Normally closed?)
> 3=no label
> 4=COM
> 5=no label
>
>
> Anyone know how to use this, if its even something I can use :)
>
> /Jan
It looks like the 5 volt DC coil is connected between pins 3
and 5.
When unpowered, there should be a (normally) closed contact
between pins 4 and 2.
When 5 volts is connected to the coil, there should be a
contact closure between pins 4 and 1.
Check the resistance between pins 3 and 5, to see if it is a
reasonable resistance for a 5 volt coil. I would expect a
resistance between 25 and 100 ohms.
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Author: Doug MillerDate: 11:40 24-04-07
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In article <462e2248$0$52195$edfadb0f@dread11.news.tele.dk>, Jan Nielsen
<nospam@mora.dk.byt.om.paa.mora.og.nospam> wrote:
>I got a relay I cant figure out how to use, it as 5 connectors.
>
>Its a finder 36.11.9.005.0000 5V(dc) 10A 250V(ac), I dont have a
>datasheet for it.
>
>The legs are like this
>O_O 1_2
>OOO 345
>
>1=NO (Normally open?)
>2=NC (Normally closed?)
>3=no label
>4=COM
>5=no label
>
>
>Anyone know how to use this, if its even something I can use :)
What you have is a single pole double throw (SPDT) relay. The coil is rated
for 5 VDC, and the contacts are rated for up to 10A at 250VAC.
NO and NC are, as you surmised, normally open and normally closed. Pins 3 and
5 would be the relay coil. Pin 4 (COM) is the common terminal, connected
(internally) to pin 2 (NC) when the relay coil is not powered, and to pin 1
(NO) when the coil is powered.
Specifically:
- no current across pins 3 & 5: pin 4 is connected to pin 2, and not to pin 1
- 5VDC across pins 3 & 5: pin 4 is connected to pin 1, and not to pin 2
Whether this is something you can use, depends on what your application for it
might be.
--
Regards,
Doug Miller (alphageek at milmac dot com)
It's time to throw all their damned tea in the harbor again.
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Author: Jan NielsenDate: 13:03 24-04-07
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Doug Miller skrev:
> Specifically:
> - no current across pins 3 & 5: pin 4 is connected to pin 2, and not to pin 1
> - 5VDC across pins 3 & 5: pin 4 is connected to pin 1, and not to pin 2
It works, thanks :)
seems wierd to have the com so close to the 5vdc, since it can be
dangerous voltage ?
/Jan
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Author: John PopelishDate: 13:08 24-04-07
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Jan Nielsen wrote:
> Doug Miller skrev:
>> Specifically:
>> - no current across pins 3 & 5: pin 4 is connected to pin 2, and not
>> to pin 1
>> - 5VDC across pins 3 & 5: pin 4 is connected to pin 1, and not to pin 2
>
> It works, thanks :)
>
> seems wierd to have the com so close to the 5vdc, since it can be
> dangerous voltage ?
I agree. I would not use this relay to switch line voltage,
unless the 5 volt supply was completely and safely isolated
from any chance of being touched, and was referenced to the
voltage applied to the common.
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Author: Jan NielsenDate: 13:38 24-04-07
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John Popelish skrev:
> I agree. I would not use this relay to switch line voltage, unless the
> 5 volt supply was completely and safely isolated from any chance of
> being touched, and was referenced to the voltage applied to the common.
Some time in the future I plan to switch line, but probaly with another
relay, its a jungle :)
I just need a Normally Open relay rated for a few amp 230V, and
triggered by 5vdc so I can do it from a logic circuit.
This one is rated for 24VDC too, so I will find some uses for it :)
Is that a Single Pole Single Throw - Normally Open then ?
/Jan
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Author: Doug MillerDate: 13:52 24-04-07
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In article <462e4082$0$52111$edfadb0f@dread11.news.tele.dk>, Jan Nielsen
<nospam@mora.dk.byt.om.paa.mora.og.nospam> wrote:
>John Popelish skrev:
>> I agree. I would not use this relay to switch line voltage, unless the
>> 5 volt supply was completely and safely isolated from any chance of
>> being touched, and was referenced to the voltage applied to the common.
>
>Some time in the future I plan to switch line, but probaly with another
>relay, its a jungle :)
>
>I just need a Normally Open relay rated for a few amp 230V, and
>triggered by 5vdc so I can do it from a logic circuit.
>
>This one is rated for 24VDC too, so I will find some uses for it :)
>
>Is that a Single Pole Single Throw - Normally Open then ?
That's correct. Of course, a double-throw relay can be used in place of either
a single-throw NO or a single-throw NC -- you just leave the other terminal
open.
--
Regards,
Doug Miller (alphageek at milmac dot com)
It's time to throw all their damned tea in the harbor again.
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Author: Pete DDate: 15:20 24-04-07
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Jan Nielsen wrote:
> John Popelish skrev:
>> I agree. I would not use this relay to switch line voltage, unless
>> the 5 volt supply was completely and safely isolated from any chance
>> of being touched, and was referenced to the voltage applied to the
>> common.
>
> Some time in the future I plan to switch line, but probaly with another
> relay, its a jungle :)
>
> I just need a Normally Open relay rated for a few amp 230V, and
> triggered by 5vdc so I can do it from a logic circuit.
>
> This one is rated for 24VDC too, so I will find some uses for it :)
>
> Is that a Single Pole Single Throw - Normally Open then ?
>
> /Jan
You cannot generally switch a relay from a logic circuit, logic circuit
will not provide enough mA, you will need a transistor between the
output and the relay
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Author: Jan NielsenDate: 15:25 24-04-07
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Pete D skrev:
> You cannot generally switch a relay from a logic circuit, logic circuit
> will not provide enough mA, you will need a transistor between the
> output and the relay
Ok, the pics I use can handle 20mA current draw on the out pins.
Still waiting for a new fuse to be able to measure amp, oops :)
/Jan
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Author: Pete DDate: 19:35 24-04-07
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Jan Nielsen wrote:
> Pete D skrev:
>> You cannot generally switch a relay from a logic circuit, logic
>> circuit will not provide enough mA, you will need a transistor between
>> the output and the relay
>
> Ok, the pics I use can handle 20mA current draw on the out pins.
> Still waiting for a new fuse to be able to measure amp, oops :)
>
> /Jan
You have a point, I was thinking logic gates not MPU, just thought it
worth mentioning, as the original poster didn't know how to wire a
relay, i suspect not using a MPU.
Of course I could be wrong, I usually am ;-)
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Author: Jan NielsenDate: 20:19 24-04-07
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Pete D skrev:
> You have a point, I was thinking logic gates not MPU, just thought it
> worth mentioning, as the original poster didn't know how to wire a
> relay, i suspect not using a MPU.
> Of course I could be wrong, I usually am ;-)
I am the OP :)
I started playing with electronics a few months ago, so even after a lot
of reading, its still pretty basic.
I am using the picaxe, not a "real" pic but a lot faster to code on
(mostly because I dont know c, cpp or assembly).
but yes its worth mentioning, I already killed one of their medium range
chips, not sure how, but resistors and making sure not to draw much more
than a relay, transistor or led from the pins could be a start :)
/Jan
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Author: Pete DDate: 22:12 24-04-07
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Jan Nielsen wrote:
> Pete D skrev:
>> You have a point, I was thinking logic gates not MPU, just thought it
>> worth mentioning, as the original poster didn't know how to wire a
>> relay, i suspect not using a MPU.
>> Of course I could be wrong, I usually am ;-)
>
> I am the OP :)
> I started playing with electronics a few months ago, so even after a lot
> of reading, its still pretty basic.
Oh mine is pretty basic, after a mere 30 years, sokeep plugging away at it
>
> I am using the picaxe, not a "real" pic but a lot faster to code on
> (mostly because I dont know c, cpp or assembly).
If you want to program 'real' PIC's but want to stick to Basic, have a
look at www.crownhill.co.uk their Proton basic is very powerfull, there
is a free sample version with a limited no of lines of code.
>
> but yes its worth mentioning, I already killed one of their medium range
> chips, not sure how, but resistors and making sure not to draw much more
> than a relay, transistor or led from the pins could be a start :)
>
> /Jan
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Author: Ross HerbertDate: 01:28 30-04-07
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On Tue, 24 Apr 2007 17:29:12 +0200, Jan Nielsen
<nospam@mora.dk.byt.om.paa.mora.og.nospam> wrote:
>I got a relay I cant figure out how to use, it as 5 connectors.
>
>Its a finder 36.11.9.005.0000 5V(dc) 10A 250V(ac), I dont have a
>datasheet for it.
>
>The legs are like this
>O_O 1_2
>OOO 345
>
>1=NO (Normally open?)
>2=NC (Normally closed?)
>3=no label
>4=COM
>5=no label
>
>
>Anyone know how to use this, if its even something I can use :)
>
>/Jan
The Finder website isn't working so trying to get data is hopeless.
Nevertheless, The Relays-R-Us website in the UK does have some info on
the 36 series
http://www.relays-r-us.co.uk/webpages/products/finder_cat/36.htm
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