>>946925 in a closed central heating system turning the radiator on or off shouldn't alter the pressure in the pipe significantly. if there is a leak that is enough to audibly drip then you have a problem and should be constantly refilling the system via filling loop. you would notice a drop in the pressure gauge.
are you sure its dripping and not just the sound of the pipe heating up?
parents house makes a similar drippy noise in the kitchen ceiling when the bedroom above radiator is on. done it for 10... Comment too long. Click here to view the full text.
Question. In an Main Earth Neutral electrical system, if my main earth became disconnected from my earth stake, what symptoms could occur, and why? Anything like flickering lights and why they would do that would be nice to know.
>>946883 Not even remotely true, ever. But good guess. A GFCI will offer faster, more localized protection from ground faults, but with no current to ground it will trip the breaker or pop the fuse on time-current which isn't the end of the world and is still pretty safe.
>>946868 It depends on the type of service. Quite typically across the globe the neutral is grounded at your service transformer. Not at your house. That means that most of your stuff will likely... Comment too long. Click here to view the full text.
>>947388 Scratch the part about the water pipe. I had that backwards in my head as I mostly do industrial crap and not residential buildings. I think the water pipe ground has to be deprecate from the ground rod/electrical connections but I'm not sure. Anyway, having a system ground is very important for safety reasons, but not 100% hypothetically necessary for the function of most things (e.g. Just look at light bulbs or other small appliances that don't have a ground prong)
I'm currently in my second year of studying electrical engineering, pic related is one of our projects from last semester that we did from scratch (just as a reference point). I talked to one of the profs and he has (inofficially) given me permission to use the facilities we have at the school if I want to. My first idea is to make some effect pedals, I'm a bassist and I've already found freestompboxes.org , and there are quite a few schematics on there and a few fully traced boards as well. I'm interested in a compressor, a distortion pedal and a wah-wah,... Comment too long. Click here to view the full text.
One thing to remember is that price!=sound quality. What are some pedals that YOU like? Do you have a distortion/comp/wah in mind that you would like to clone?
The best thing you could do right now is find a schematic for a pedal that you like and try to analyze it. For example, if you find a particular distortion pedal, look at the clipping arrangements and the filtering (really all that any "dirt" effect boils down to). One "gotcha" that guitar effects will have is that the inputs are typically very high impedance; modern practice is at least 1Mohm.... Comment too long. Click here to view the full text.
>>945253 >diystompboxes I'll definitely check that out, thank you. I know that price doesn't make the sound, but I'd rather copy something that's well reviewed and liked, and most of those effects are honestly in the 200€ range and not down in the 30€ bargain bin. Not to generalize of course, but that was my main reason for that comment. I don't really have the option to test out a whole bunch of pedals sadly, so I'll have to go by reviews and recommendations basically. For the compressor I'd like something that doesn't colour the sound but CAN be cranked for a nice effect if I want to, so I guess I'll have to find the suitable comp and see if the schematics are available. Thanks for the tips with the input jacks, I'll make sure to seperate them as much as possible on the circuit and physically as well (but sharing the ground plane shouldn't be an issue I assume? I don't see why it would but maybe I'm just missing something very obvious). More research for me, basically, but thanks for the pointers.
Sharing the ground plane shouldn't be an issue. One compressor that people seem to like is the Engineer's Thumb. It uses an OTA in the feedback loop of the opamp. This gives you greater dynamic range; OTAs are fantastic devices but they are limited in headroom and linearity. Keeping it in a feedback loop solves those issues while keeping the benefits (well defined gain control).
In regard to testing pedals, do you live near any music stores?
Lasercutted this and other stuff for a fun this week, but im looking for some even more ideas on how i can apply lasercutting and make some really practical things. What are your suggestions? Also, a general laser cutting thread if you want.
>>947474 Well, Papercraft is just the skeleton, I will strengthen the paper with fiberglass, and paint it, then insert electonics in it, wheels, controllers, motors, arduino etc as well as lights and effects to make it a fully functional robot.
I got those 2 keys not working [B]|N] It got tea a while ago and It's in spare since, I'm trying to take the time at repairing it. What is doable ? Is there some checks doable with a "check link" on Multimeter ? thanks for any help
>>947132 check continuity along the top track that starts on the left pad and goes right then down. space bar has two contacts so its possible the track is broken between the two space bar buttons and you just don't notice the left hand space bar button is broken because the right one works
I helped my friend pull his bike motor so I could rebuild the pistons. As of now we are waiting on head gaskets which are on back order. Is there anything I can do while waiting for those as far as bettering performance on the cheap or just maintenance? I've lapped all four valves and port matched his intakes as they had a slight lip the overhung the carb boot.
Weigh each con rod/piston combo and file minute amounts off each heavier con rod until they weigh the same. Perhaps take the crank in and get it balanced. Plenty of info out there on blueprinting engines.
Hey guys. I posted this sometime last year and thought I had the problem fixed, but here I am again.
I am making these little necklaces from mini bottles filled with glitter glue. Long story short, the glue keeps evaporating at a slow but steady rate. In the last thread, someone pointed out that the cork was probably cheap and letting some air seep through it. I remedied it by coating the entire bottom of the corks with epoxy glue before gluing them shut. About a year later, I notice that the stuff inside is still in fact shrinking, but it's just doing it at a much... Comment too long. Click here to view the full text.
I am thinking about a way to make a small amount of side cash and get some shit out of the landfill in the process, so I am thinking about maybe recycling latex paint. How much would you pay for recycled latex paint when your only option for colors would be very general and broad, such as blue-ish, white-ish, etc.?
nice idea but to be honest, i'd think "fuck this shit, spend five more bucks and get a fresh can of paint."
The thing is, everything what isn't a everyday product needs to be perfect. If i needed a bucket o'paint everyday, i guess i would visit you. But because i just use it once a decade i buy good stuff from the market.
>>945500 If I want basic paint I can get it for $22/gal, if I want high end I can get it for $45/gal. And I usually want several gallons of identical paint. I wouldn't mind using recycled paint, but if I need 3 gallons of a color and you only have one there's nothing I can do. If I only need a small amount I can get a quart for $10, and that'd be a hard price to beat if you want to make it worth your while. In my jurisdiction you're not allowed to put paint in the trash if it's wet. You can leave the... Comment too long. Click here to view the full text.
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