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  1. C

    Wiring a Fire Bell to a flip switch?

    Agree with above, except that I don't know how dorke inferred the value of the transformer. If someone used a transformer rated at a nominal 24VAC secondary (often used for furnace or HVAC control circuits), those will sometimes give up to 28VAC output until load pulls them down. I know this...
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    Honeywell security panel

    Okay, I dug out my V-20P and plugged it in, and sure enough, Field 90 will show 15, decimal number, when it has a 15 value entered. But to get that 15 value in there, you have to enter #15 after *90. If you don't press # first, Field 90 will accept only the first digit, and immediately advance...
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    Honeywell security panel

    If you put it "15", then you didn't follow my instructions; which were to "enter #15, three key presses." That's #15, "Pound key, one key, three key" = pound-one-five, three keys to press. Sorry I didn't make that more clear. The # symbol is sometimes called "pound", "number", "hash", or...
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    Honeywell security panel

    Okay, that looks like an Alpha keypad, so you'll see more detail in your display. Power your system off by unplugging the power transformer. It's usually a beige plastic-enclosed wall-wart, a 16.5VAC, 40VA transformer plugged into an outlet that is most often near the control panel. Depending...
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    looking for feedback on feasability of this idea...

    Well, I know this is an Electronics forum, but you may be making it too complicated by using an electronic approach. What you're actually after is a mechanism to store ambient heat for use during transient cool periods. Have you considered putting a quart-or-so bottle or two of water inside the...
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    Honeywell security panel

    Let's get on the same page with our terminology: The Control Panel is the brain of the system. There is only one and it lives in a metal cabinet. http://www.ebay.com/itm/Honeywell-Vista-20p-Alarm-Panel-/252369631793?hash=item3ac266fa31:g:v3gAAOSw3xJVWgTg I like to use eBay for illustration...
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    Honeywell security panel

    Download the Installation manual and the Programmer Guide. http://www.alarmhawaii.com/Alarm Vista 15,20.pdf http://site.aesecurity.com/Manuals/v15pand20pprogrammingguide.pdf The Installation manual will tell you how to get into panel programming and how to leave programming. Do you have an...
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    honeywell 6000f security alarm

    Okay, after posting the above ^^, I'm posting this final (?) note about the "old honeywell 6000f security alarm system" in the OP. I just did a little more research on "Honeywell 6000", and I now SUSPECT that the reason we never heard back from the OP after 1 (one!) post, is that s/he...
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    honeywell 6000f security alarm

    I have responded to Randy's question on another thread that he started, and I REQUEST THAT NO ONE POST ANY MORE ON THIS OLD BUMPED-UP THREAD, which had nothing to do with Randy's question. Please just let it work its way back down the queue and into oblivion where it belongs unless Walybbob or...
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    Honeywell security panel

    First thing always is to find the model of your control panel (NOT the keypad). If you have one of the Vista series, the model nomenclature should be on a diagram inside the door of the control panel's steel cabinet. The Vista series runs from the old Ademco 4110, 4110DL, 4110XM, through more...
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    my solar charge controller circuit

    You didn't mention how much power or current you expect your lamp to draw, so I'll just throw this out there. I've seen too many novices doing projects like this that calculate their battery size so that the battery size just meets what they think their requirements will be. For example, if you...
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    mesh

    Hate to be the downer to kibitz on a good shaggy dog, but you forgot to mention that they originally found that mayonnaise made good gear lubricant before they developed a hydrocarbon-based transmission fluid. Ergo, Synchro de Mayo.
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    Soldering Iron Catalyst

    'Fraid not. Many years ago I invested in a carbide circular saw blade to cut open a catalytic converter and what I found inside were a collection of ceramic-type porous pellets. What platinum/palladium there was, wasn't in the form of nice accessible wires or mesh--when I researched it, I found...
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    How To Annoy Those Helping You Out

    Your User Name is appropriate, chopnhack. :eek: I wouldn't mind a title that reads, "Please help with my alarm system!!!!" I'd even tolerate all the superfluous exclamation marks. Just so I know the subject under consideration.
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    How To Annoy Those Helping You Out

    My pet peeve here is people who take up a whole paragraph without even mentioning why they're posting. I know a lot less electronics than most of the gurus here, but I have a lot of expertise on alarm systems that most electronics gurus don't have. So I look for posters with an alarm system...
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    Charging lead acid battery

    Wow, you mean for the last 40 years I've been using ~13.8V as a standard to see if my customers' 12V Lead-acid batteries would charge after I've left the premises? that I've actually been leaving them with a system that wouldn't work? Amazing that all those thousands of customers didn't...
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    How much of a Short circuit is too much?

    Some of the guys on here are going to love you, Soma. The ones who just love to make solutions WAAAAY more complicated than they have to be. Using a boost module with input of 3V limits your output to 220mA Max, AND decreases the efficiency of your circuit. I don't know if that will even be...
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    Replace fried range hood transformer with cheaper alternative?

    Okay, there's something I don't understand here. The "transformer", which is repeatedly being referred to as a transformer, is obviously an assembly of components built around the actual transformer. This appears to be one of those jargony things where an entire assembly of components is called...
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    choosing a resistor value

    Lavaguava's graphite electrodes actually sound like what you're looking for. Graphite is chemically inert at temperatures below its combustion point: It won't react with the water (or anything dissolved in it) through electrolysis. You can get ready-made graphite electrodes for your prototype by...
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    Please identify these resistors

    The wattage of the resistors is basically a function of their size. There are no markings that give wattage. If you could put a cent or dime coin in the picture for scale, we could probably tell you the wattage.
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