Trafo for relay!

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grtamp
Posts: 348
Joined: Tue Mar 23, 2010 9:37 pm

Trafo for relay!

Post by grtamp »

Hi , this trafo can be ok for relay power supply? my wall voltage is 220/230V

http://it.mouser.com/ProductDetail/Xico ... 6v8Q%3d%3d

Thanks
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Structo
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Location: Oregon

Re: Trafo for relay!

Post by Structo »

For a #124 type amp it is recommended that you use a 12v secondary and a current rating of at least 450ma.

I used a Triad with a 700ma rating, I have four relays.

This is the one I used.

http://www.mouser.com/ProductDetail/Tri ... LjaQ%3d%3d
Tom

Don't let that smoke out!
grtamp
Posts: 348
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Re: Trafo for relay!

Post by grtamp »

Hi Tom , thanks , but I run with 220V primary ,not 115V!!!
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Structo
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Location: Oregon

Re: Trafo for relay!

Post by Structo »

Yeah I know.

It really depends what relays you use and how many, plus LED's.

The 300ma may be enough but you should add up all your current draw and see if it will be adequate.
Tom

Don't let that smoke out!
greekie
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Location: Denmark

Re: Trafo for relay!

Post by greekie »

The usual small DPDT-relays people use, are at around 60-75mA each @ 12V. Then add 10mA for diode an dropper resistor. 300mA should do fine for two relays. But use a 12V primary and a rectifier bridge, not the voltage doubler.
grtamp
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Re: Trafo for relay!

Post by grtamp »

I use a pair 6V relays and leds!
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Structo
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Location: Oregon

Re: Trafo for relay!

Post by Structo »

You need to give us more details about what you are doing.
Plus it would help greatly if everyone put their location in there profile so we can best answer your questions.
Tom

Don't let that smoke out!
greekie
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Location: Denmark

Re: Trafo for relay!

Post by greekie »

Find the datasheet and sum it up, ad 50% for good measure and there you go.
grtamp
Posts: 348
Joined: Tue Mar 23, 2010 9:37 pm

Re: Trafo for relay!

Post by grtamp »

This is the relay I want use!

http://www.banzaimusic.com/Finder-Relay-30.22-6V.html

and my power supply run with 7806 voltage regulator
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martin manning
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Re: Trafo for relay!

Post by martin manning »

http://www.ieknox.com/catalog/download/finder/S30EN.pdf

33mA per relay at 6V. So, figure 50mA per relay including the LED indicator.
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