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telephone ringer timer

Discussion in 'Electronic Basics' started by palito, Dec 22, 2003.

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  1. palito

    palito Guest

    I know nothing about electronics and am looking for some help here.
    I need a telephone to ring for 15-20 seconds every 2-3 minutes for ten
    hours a day for an art installation. The ten hours a day part will be
    handled manually.
    I plan on using a Link-it (
    but need to use a relay/timer to trigger off-hook condition for ringing
    With a 600 OHM resistor and a relay/timer plugged into source jack,
    Link-It manufacturer says I should be in business.
    The 4690A -8 -3 -2( seems
    like it might do it. I'm guesing.
    Any body think that might work? Better way to do it?

  2. CFoley1064

    CFoley1064 Guest

    I know nothing about electronics and am looking for some help here.
    It looks good. Actually, you've approached your problem intelligently --
    separated the project into functional blocks, then tackled the challenge of
    finding vendors to supply parts which will handle each block.

    I haven't dealt with jechtech or the Linkit, but the .pdf file looks good, and
    their circuit looks like it will work as advertised. Artisan is a good,
    reliable manufacturer of TDRs and other control circuits, and aren't the most
    expensive outfit on the block, either. The 4690A -8 -3 -2 is the model you
    want if you need to use 115VAC line voltage.

    Good luck.
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