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  1. S

    De-soldering/getting solder out of a DC jack socket on a PCB.

    When I get a significant plugging of the thru-hole, I heat the hole, and push through a wire (like a resistor lead), and push it in-and-out a few times while the remaining solder cools. It opens the hole to the right size. Your solder-sucker should work. You have to take them apart once in a...
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    Basic, Quick Question

    Nuts, either I think or type too slow for this site. Gone for the weekend, wrote-up a response last night, but timed-out on the site and it erased my reply. Will try a shorter, faster response here. I'm still assuming you're motor is 330ma not 330A (two different entries above). Shorting...
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    Basic, Quick Question

    Moving 20 lbs. on a one-hundred foot track, is going to cost you some amperage. That'll mean you'll have to have a good circuit interrupt for Resqueline's reasons. (safety of people). Like Resqueline, I don't see a problem with low voltage and the amperage to the people, but somebody shorts...
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    solar powered planter box lights

    The value of LED lighting would be that they use much less power than other types of lighting. That means you'd have brighter lights for a longer period of time at night. The first thing I would do, is check if any of the solar powered garden light products you can find have LED lighting...
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    GE wide screen TV picture poor signal and briteess

    Projection TV's were notorious for misalignment if you moved it from one location to another. If you just moved it, that might be part of your problem. Of course, the age of the TV system is also a factor. You probably already know this, but most of your type of TV has already been...
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    solar powered planter box lights

    Look, I don't think people are ignoring you, we're just not sure what you're trying to do. I'm assuming you want these LED's for decorative lighting at night, but we don't know that from what you've said, maybe you're trying to supply enough light to keep the plants alive in a dark room? It...
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    Basic, Quick Question

    There are several things to consider for starters. Your voltage will be determined by the motor you're using, your amperage is going to be somewhat dependent on the length of your track. It sounds like this is not going to be a small project. You'll get more input from people as you add...
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    JVC AV-32730 Television won't turn on....

    Not familiar with this set, maybe somebody who's seen this before can have the fix. Sure sounds like some device in the power supply section of the set. I don't know what a shop charges anymore, but (except for whatever the shop would charge for labor, or whatever) it sounds most likely like a...
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    Caddx NX-8E Alarm System - Fire Zone Light On

    Your alarm control panel will also have a main power, (for power outages), and/or a memory back-up battery. Make sure you change that battery too. When you identify the source of the bad input (from whichever zone is causing the problem), check your wired input for loose connection, before...
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    what happens when you put 12v into a 24v stepper motor?

    Try it and find out. Motor might draw more current from a 12v supply than what the 12v supply is spec'd to?
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    Caddx NX-8E Alarm System - Fire Zone Light On

    Like LTX71CM asked, we need more information on wired or wireless system. Also, fire detector elements go bad over time. If one of your detectors is bad, you'll get the panel notification in one way or another (like your flashing trouble light). Can you turn off individual zones one at a time...
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    Scanner

    That's MY scanner, how did you burn it out so fast? www.unicomp.co.uk www.partmaster.co.uk www.epson.co.uk
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    Toshiba HD DVD Player HD-D3KU Draw Won't Open

    You've probably already tried this: When mine locks-up, I completely unplug the unit from the wall socket, and plug it in again. The unit goes through it's complete reboot cycle again. Another silly thing, is if there's a disc in there, and it wasn't seated correctly, it can jam the sliding...
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    Problem with my multiple relay circuit

    The back to back zener guy claimed his zeners never fail, ... the old 'always or never' syndrome, that just doesn't hold water with electronic circuits. Good to know about the varistors changing characteristics, I'll be watching for that. I'm kind of thinking the zener claimant, was using...
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    Problem with my multiple relay circuit

    Trivia update. Travisc put this question on another site. Two guys fighting over whether a transorb or back to back zeners would be better than varistor. One claims varistors degrade over time, and back to back zeners are a better choice. I don't know what voltage this guy was at, but...
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    Power Adapter

    It's a regular power connector jack. Be warned, there are several sizes of barrels AND pins for those connectors. All the ones I've seen are in millimeters. Get an exact measurement for the pin (and inside dimension of the barrel jack). If you get a smaller pin than the barrel, you'll have...
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    VFD's (Vacuum Florescent Displays) revitalized - observation

    You're burning-off the oxidation on the filament. That's basically how we used to rejuvenate TV picture tubes (CRT's) We'd do that by increasing the voltage on the CRT filament, and burning-off the light coating that used to form on them. Interesting to me, that you can do this on your display...
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    mfd Cap compared to a uf Cap

    Naw, I repair test and measurement instruments all day long. Half the caps I buy are marked mfd, for microfarad. I've often wondered if maybe the machines that manufacturers use to print, only have the capability of printing block letters, and maybe they don't want to bother getting the 'mu'...
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    Problem with my multiple relay circuit

    Just for trivia, I use the varistor a lot to absorb spikes in relay circuits. There is another curious phenomenon in relay circuits I've experienced problems with in the past. Depending on the design of the circuit, I've seen relay 'chatter', where the relay will rapidly engage and...
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    mfd Cap compared to a uf Cap

    I can't recall ever seeing a capacitor actually marked on the device in milli farads. ufd and mfd both mean micro farad. TonyGotaTruck's 1200mfd, IS a 1200ufd capacitor. daveen and *steve* are both exactly right about the technical explaination, but in practical markings on devices, mfd...
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