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    Aaaargh! 555 circuit works well with LEDs but not with relays...

    Thanks oldgranpa and audioguru. Guru, Apologies for the 100k/1k mix up.  When you fill out the "Reply" screen, you can't see  the previous replies and I could not see the schematic so I erroneously thought it was 100k.  I will follow your 1k directions of course. The reason I wanted to use two...
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    Aaaargh! 555 circuit works well with LEDs but not with relays...

    Awesome info, audioguru.
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    Aaaargh! 555 circuit works well with LEDs but not with relays...

    Thanks very much audioguru. I am using a NTE R46-5D3-6 relay.  Nominal voltage is 6VDC, coil resistance 100 ohms Nom power 360 mW Max contact current 5A Does that help? Bo
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    Aaaargh! 555 circuit works well with LEDs but not with relays...

    Thank you audioguru and oldgranpa.  Very good info. Your assumptions are correct oldgranpa in that I am reasonably new at this.  So I very much appreciate your schematic.  I am assuming that the "thing" on the right is the relay (right above the OR).  So all I need is to add that transistor in...
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    Aaaargh! 555 circuit works well with LEDs but not with relays...

    I built a monstable 555 timer based on John Adams' shematic which stays on for 20 seconds.  The output of that one feeds power to an astable version  of the 555 circuit which blinks every two seconds.  I have LEDs at each stage and everything works perfect.  But when I add a relay in parallel...
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    How to wire two 555s in parallel?

    Thank you very much for the answer and the schematic Audioguru.  At first the file wouldn't open so I found a link for it here (hope it's OK to post links): http://members.shaw.ca/novotill/FireLightFlicker/index.htm I will give that a try. Bmachine.
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    Simple question about measuring output of a wall mount transformer...

    Wow!  Excellent information, all.  Thank you very much.  I guess I'll go ahead and give this a shot. BTW, Is there a simple way to simulate a load for testing purpose? Bo.
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    Simple question about measuring output of a wall mount transformer...

    Hello, dumb question here. I need to use one of those little wall mounted ac/dc converter for a little 555 based project I am doing.  I found an old one that is labeled to have a 9V DC output.  But I put my voltmeter to it, it reads 14volts.  I then tried a couple that were rated at 24v output...
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    How to wire two 555s in parallel?

    Hello.  Newbie here. I read with interest the article by John Adams about using a 555 as a timer I am trying to build a controller that would activate a relay in a "non regular" way.  In other words, when I use the astable example John gives, depending on the values used, the circuit will give...
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