Timed relay

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jblair41

Member - Posts: 1

Joined: April 17, 2003

Posted: April 17, 2003 at 1:26 PM / IP Logged

I need to build or buy a relay that runs a cycle of closed for one hour and open for ~1.5 seconds over and over again.

I have an cable internet service proivder that cuts me off every hour when I am downloading at full bandwidth. It has nothing to due with my dchp lease, I have already checked that. The only way to get back on the internet is turn my modem on and off (my is working just fine also).

The modem uses a 12v dc 1amp power suppy. I was thinking I could cut one of the two wires, that run from the trasfomer to the modem, and attach a always closed relay. Then send a 12v pulse to the coil of the relay once every hour for about a 1.5 seconds, opening the relay, turning my modem off then back on.

Is their a better way? How can I build what I need?

I know it's an off the wall thing but I would really like any help you guys could give. Thanks,

Joe

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Thinkster

Copper - Posts: 94

Joined: March 27, 2002

Location: United States

Posted: April 28, 2003 at 9:08 PM / IP Logged

You can use a relay for this, but your gonna need a circuit to control the relay. There's a few ways to do this, you could use a few 555 timer IC's cascaded or you can get a little programmable microcontroller for about $40 and program it to do what you want. Either way, your going to have to know some basic electronics and soldering.

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MCubed45

Copper - Posts: 65

Joined: February 27, 2003

Location: United States

Posted: April 28, 2003 at 10:10 PM / IP Logged

lol damn that's some irritating internet service... if you can find something cheap to send a signal once an hour the rest should be simple

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Timed relay

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