Search results

  1. C

    Changing Calling cell# via keypad RFK5501 on DSC 1832 alarm

    As Martin said, your questions seem to have been answered on the forum that specifically addresses alarm system DIY issues, by KriKon, who seems to be better acquainted with the newer DSC stuff that I am. (I've been retired a few years now, and interfacing with cell phones is relatively new for...
  2. C

    I am curious what part do they substitute for a mercury float?

    See Wikipedia, Galinstan. https://en.wikipedia.org/wiki/Galinstan
  3. C

    Solar lead acid battery housing

    Yes, burg/fire alarm systems usually have the SLA/AGM batteries for the Control Panel (the system "brain" using the battery, not the keypad) inside a steel cabinet in some out-of-the-way place, e.g., an unfinished basement or utility area housing a water heater or furnace, or a utility closet...
  4. C

    Solar lead acid battery housing

    Actually, I never heard of Instructables before you mentioned it. I was drawing on my experience back in the 80's when I was fairly new in the security alarm business, which had/has a lot of lead-acid batteries, mostly sealed lead-acid (SLA), and had/has a lot of turnover of said batteries. I...
  5. C

    Solar lead acid battery housing

    I have no disagreements with anything else you said, but that warning against storing lead-acid batteries on concrete is many decades out of date. Like many urban myths, it persists. http://www.todayifoundout.com/index.php/2017/02/storing-car-battery-concrete-floor-drain/
  6. C

    Power series psc 1832 communication error

    I assume the "psc" in the title is a typo, and you're actually referring to a DSC PC1832 Control Panel for your alarm system. As for your communication error---I'm sorry to be the bearer of sad tidings, but your system (and basically all contemporary alarm systems) just don't work well with...
  7. C

    Anybody else watching the USA election results?

    If you think this was the most embarrassing time of our political history, I have to think you don't know a lot about American history. Not that I fault you for that ignorance, especially given that I know very little of the United Kingdom's history---which is, after all, part of my history...
  8. C

    I have a 48 volt power supply with 15 amps. OkI only need 6 amps. What size resistor can I use that

    You don't need to do anything. The Amps rating listed on a power supply is the maximum amount of current (Amps) it can safely deliver continuously, NOT the amount of current it will deliver. Whatever you're supplying with 48 volts will draw whatever number of Amps it uses, and the 48V power...
  9. C

    Comedy Thread

    I think it has something to do with Graham's law---too diffuse?
  10. C

    Stage0 - a $20 wind turbine charging AA/AAA rechargeable batteries.

    What Steve said. Plus, you can buy Panasonic/Sanyo, Energizer, Duracell, and other reliable brand-name batteries off eBay. I've had good luck using eBay, but I generally know exactly what to look for there. I have learned to look for sellers that give specs, e.g., manufacture or expiration...
  11. C

    Happy new 2021

    Happy new year to everybody. Speaking for well over half of us Yanks, we've been looking forward to this year for a long time! P.S. The beginning of the new year is formally on 1 Jan, but the real new year here in The States begins on 20 Jan. :D
  12. C

    Comedy Thread

    Powered by an earth battery, no less.
  13. C

    What music do you like?

    Actually, Yanni once said he didn't want his music to be background music--I think he said specifically that he didn't write his music to be "relaxing"; he wanted to engage the listener. So you two are in accord on that score. No disagreement here if you don't like his music. Different folks...
  14. C

    What music do you like?

    Can't believe nobody's mentioned Yanni yet. I don't normally pay a lot of attention to who plays what music, even when I like the music; but in the mid 90's I happened to hear Yanni on the radio--not too many stations will play his music, it doesn't seem to fit into their format--anyway, I got...
  15. C

    Anybody else watching the USA election results?

    The election is over, and Biden won. According to what T***p said in 2016, Biden's margin of victory (306 electoral votes vs T***p's 232) is a "landslide". Now we're just waiting to see how far T***p will go to attempt a coup, for the first time in USA history, by trying to pressure several...
  16. C

    salt swimming pool chlorinator

    Okay, if that meter's range is from 0 to 120, I'm going to take a wild guess that it doesn't measure a percentage of anything. In fact, it might not be measuring anything electronic at all. If it can damage it to operate below "70" of whatever units of whatever measurement it's displaying, it...
  17. C

    12V to 12V trickle charger help

    The Ah rating of each battery is relevant. A larger battery will require a larger trickle charge to keep it topped off. I'm assuming that RVs, like cars & trucks, come with with a range of different size batteries; but what dave9 says is true: A trickle charge for any battery of the scale you're...
  18. C

    salt swimming pool chlorinator

    Lionel, is this the same chlorinator you posted about back in 2014? https://www.electronicspoint.com/forums/threads/chloromatic-esr160-pool-chlorinator.266814/ 50% of what output? If you're referring to specs or ratings printed somewhere, then there may not be anything wrong with your...
  19. C

    Proximity Sensor

    If your purpose is to turn on the light when the door is opened, then why wouldn't you just use magnetic switches on the doors? It may not be a problem for you, but if you use "proximity sensors" (which these really aren't) or photoelectric eyes (Active IR) or other "motion-type" sensors (e.g...
  20. C

    Halloween Animatronics and Motion Sensor Switch

    One question: What make & model low-voltage PIR did you purchase? Are you sure it works on 5 VDC? I'm asking because in my industry (security alarms), most PIRs need 12 VDC.
Top