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  1. R

    Correct hall effect switch usage

    Thanks AudioGuru, looks like we posted about a minute apart. The terminology is all new to me. When I read the data sheet, I didn't know what "Pull-Down" meant exactlly until I hooked up some LEDs and figured out that the hall effect switch simply allows the circut to ground out. Slowly, I learn...
  2. R

    Correct hall effect switch usage

    Good news, I got it to work over the weekend. What I didn't notice is that the hall effect switch pulls down and not up as I had belived. So, I replaced the push button with the hall effect switch and changes the 2N2222 NPN transistor to a Radio Shack 3906 PNP and it worked. Hurray!! Thanks for...
  3. R

    Correct hall effect switch usage

    CORRECTION: In my second comment I put "100mA." What I meant was 100mV. Thanks for the reply. I will try the LED test when I get home. As for the output voltage of the sensor, should I worry about the output voltage?
  4. R

    Correct hall effect switch usage

    Ok, looking close at the specs of the hall effect switch, it has an average output voltage of 100mA. I suppose that is not enough to power the ic. Does anyone have any idea what type of amplifier I should use and any times on how it would be installed? Again, any help would be greatly...
  5. R

    Correct hall effect switch usage

    Hello all. I had a quick question. I have a 4510 counter I made that uses a button and Schmitt trigger to count. What I am hoping to do is replace the button and trigger with a OH090U HALL EFFECT switch (has an internal schmitt trigger) but can't seem to get it to work. The counter works with...
  6. R

    Power Supply and battery life

    Thanks for the ideas MP. I thought about the mercury switch idea and have been leaning towards using some type of Hall effect switch. I think that would fit my application a bit better anyhow. I will also contact him. Who better to ask right? Thanks again. See you in the forums. Ryan
  7. R

    Power Supply and battery life

    Perhaps you are right. I should just try the project and make sure I learn the process before I jump in head first. Again, thanks for your help. Ryan
  8. R

    Power Supply and battery life

    First off, thank you for the quick reply. You have been most helpful. Secondly, it seems like the HC74xx series would be a better choice. Is there any counters or decoders in that family? My idea is to use a Lith-Ion coin battery (3v 1000mAh). So, it would seem more stable if I were able to...
  9. R

    Power Supply and battery life

    Ok, to start I would like to mention that I am VERY new to building circuits. Now that that is out of the way, I have some questions for anyone interested. I am planning on building the step counter project http://www.electronics-lab.com/projects/misc/007/ My first question is how can you...
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