How can I modify/rewire a floor lamp so that it runs with DC power?
>>2874976Inline rectifier
>>2874976Show us the lamp faggot.If it's a modern LED lamp it already runs on DC.If you want USB C PD, he one of the picrel power modules and set it to whatever voltage your lamp needs.
>>2874980elaborate please, how exactly do I use one?>>2874982for example this one:https://www.walmart.com/ip/Mainstays-HW-F0377BK-Mainstays-71-Floor-Lamp-Black/12173437How do I hook up that device to this lamp? Can I just get any LED bulb to go with that?
>>2874976my wife had this 120v AC floor lamp when we met. it was a 2000's modern electric reproduction of an old offset resovior paraffin lamp.I pulled the wires out, plumbed actual feeder tubes, sealed the resovior, drilled a mason jar, plumbed/sealed & found a jar lid threaded burner on AMZN.this was at our old house, prior to the solar system upgrade. New house, upgraded system & load balance... we just use a light switch now.hope that helps.
>>2874976I read up on USB once when I tried to program USB data packet readers in C.From what I understand, you can only get low power from a USB port by default. That’s 5v at 100mA, or .5W. The only way to get more power is to basically ask the receptacle end to provide more power in increments. So to get anything like 100W from USB-C, you need a controller that will do that negotiation for you. You can’t just directly wire the connector to a lamp. Again, I’m not an expert. This is just based on what I read.
>>2874990Yeah I read about those negotiator circuits too, it's something like what this anon posted >>2874982Basically I want a light fixture that can run 2 or 3 of these light bulbs https://www.walmart.com/ip/5030057498 off a USB C connection
>>2875000All LED lights run off direct current.Those LED bulbs have a built in driver in the base to convert ac to dc. If you have a dc power source just buy an LED light bulb that matches the voltage of your supply.
>>2875011won't those drivers render the bulb inoperable if the input current is DC instead of the AC it's expecting?>just buy an LED light bulb that matches the voltage of your supplyand then what? how do i hook up the bulb to the supply? I haven't found any light fixtures with non-built-in bulbs that end in a USB-C or cigarette lighter or something that can plug into a power station
This whole thread is fucking retardedCut the end off the cord and wire it up to a 12v usb C pd negotiation chip/port and screw in a 12v RV light bulbhttps://www.amazon.com/dp/B0D6L13MVR/
>>2874984Why do mutts not specify the socket and voltage for the lamps? My best guess is that it runs AC though:>This lamp uses a 150-watt incandescent light bulb or equivalent (not included).So, I'd say that it's near impossible. The bulbs expect whatever you consider high voltage (like 100V?). Retarded incandescent lights work with DC, but you need a quite high voltage. For the LEDs, chances are that 100V DC also works, but I'd have to look at a typical circuit to tell you if they do. Which brings me to the main question: y tho?
>>2875074>Why do mutts not specify the socket and voltage for the lamps? My best guess is that it runs AC though:It's a fucking lamp from walmart.A19 socket, 120 AC
>>2875052Does the same 12v usb C pd negotiation chip work for a fixture with two or three bulbs?
>>2875122So long as whatever usb-c charger you have can output 3 amps on that voltage which is rare, you can run 3 bulbs, it's only 36w.If your heart is set on usb-c, you should instead use a 20v PD negotiation chip. 20v chargers that do high amperage are much more common because that's what laptops use. But doing so severely limits your bulb choice. The ones I linked should be fine with 20 because they are rated for 12-60v. I'd suggest just buying like 12 extra bulbs and not worry about the rarity at that pointIve had a lamp I did this to for 6 years only it just connects to some screw terminals. The switches die after a while so make sure the lamp you use has easily replaceable switches or you may want to install your own into the cord.Never unplug it while it's on
>>2874976
>>2875095Easy bingo
>>2874976take floor lamp, plug it in to a DC power source of 120v.
>>2874976Depends.Are you going to change out the edison screw at the top or not? If you aren't, you'll need an inverter inline but it's probably identical to how'd you hook it to a car battery then.>>2874980How the fuck would a rectifier help? OP wants DC to AC, not AC to DC.
>>2875291can a light bulb like this https://www.walmart.com/ip/5030057498 run from DC? It's 9 watts, but is there some circuit inside the bulb that prevents it from running with 9 volts 1 amp of DC current?
>>2875320The circuit inside expects 120v AC. It will totally fail to light up with 9 volts DC. You could maybe open it up and bypass the circuitry and get it running on DC, but I doubt the COB inside expects 9v. And I also doubt you have the skills to do the work to find out what voltage it does expect.That said, 6 bux for 4 LEDs + heat sink + diffuser is actually a decent deal. Imma remember this for the next time I want to mess with lamps.
>>2875323MehEvery led light bulb ever uses very basic circuit.You get four diodes that convert the 120v ac to pulsed 170v DC, sometimes a capacitor to smooth that out to 170v DC under no load and something like a saw blade wave under load.Next it goes through a capacitive dropper to shed voltage and then it goes straight to like 20-30 3v leds all in series running at 60-90v DC.You can feed them straight DC, probably 60v DC will light one and it should handle up to 170v DC before dieding
How much light can I get through USB v2 and USB v3?Is there any good article about it?
Correct me if I'm wrong here but don't these modern LED 120v bulbs have internal recitifaction so as not to flicker with the AC frequency? If so you can just use a step up converter and power them with 120v DC or quite possibly using a lesser voltage would be fine too.Good old incandescent lamps would run on anything.
>>2878130>get AC from the wall>convert it to 5v DC for your usb cable>convert it back to AC for the step up converter>back to 120v DC>send it to the AC bulb
>>2878209The purpose of a DC-powered light is for battery or solar power...right? What reason is there if you can plug into the wall?
>>2878258Idk when I got DC lighting when I first set up some solar, I immediately noticed the smooth zero flicker operation of it and now I can't go back
>>2875052>>2875129>>2874976I just did some googling because I have a potential use case for similar but have never really explored deeply.Picrel is a Philips Hue MR16 Smart LED Bulb White and Color Ambiance. It already expects the opposite and hooks up to a dc convertor so that it works in normal 120v houses...Could op just plug that bulb directly into a power pole or something similar, add a swtich somewhere then run it directly off of 12v?
>>2878453Responding to myself here:Cant you just get one of these 12v receptacles, mount it in any direction, 3dp a sconce or a base or whatever to hide the socket and make it look like a normal light fixture with switches and a cord coming out of it, but the other end of that cord is a power pole connector or barrel connector or just bare leads that you can screw into a 12v fuse box?
Is USB necessary in this or is it just how do I get lamp 12v dc? OP's language only says 'runs with DC power'If thats the only requirement i agree, this thread is pants on head.Back in my tiny house days when I was living off a single battery I looked for power supplies that plugged into the wall and turned 120 into 9 to 12 volts, as you could just clip off the plug, wire the thing to the terminals and it would work.Under-cabinet lights for countertops are mysteriously consistent at falling in this range. Why not do the opposite, get it for the power supply not the light then any rv, auto or dc bulb and socket will do. Just find a clock radio, light or something. No need to overthink it. Or is the usb part necessary, never explicitly stated and everyone got that but me?
>>2875047>won't those drivers render the bulb inoperable if the input current is DC instead of the AC it's expecting?Yes. That's why he said to get LED's that match your power source. Seems kinda dumb to convert DC to AC for it just to get converted back into DC by the circuitry inside the bulb. Just get a bulb that runs off DC like >>2875052 suggests.
The USB does not make sense to me, why not use something dumb and reliable like ATX/ATX12v, chinese amazon 12v supply with fan, 12v battery with cheap trickle charger, really anything besides usb makes a lot more sense for a home installation.I kinda get it if he just wants his lights to not flicker. I have some flickering lights that are very annoying sometimes.
>>2879843he's one of those USB-C cultists that wants everything to be powered by muh USB-C
Are there any decent usbc 5v floor lamps that take 12v dc bulbs?
