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I'm not good at electronics, so I'd appreciate it if you could explain it "on fingers". Setting the task: 4S battery, voltage 10-16.8V (most likely it will be 12-16.8V). 4 solar panels ...
Michael's user avatar
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I would like to know what parameters a panel for flexible PCBs should have. Can I use V-cuts or milling? What are the methods of depanelization? Should any part of the panel be rigid? Does anyone have ...
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I have a 6V 3W solar panel and want to charge phone with it, i have tried a dc converter XL6009E1 via a 12V 2A car charger it shows charging but battery power did not increase I am scared of using the ...
Godfrey DonShawsky's user avatar
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I-V curve of a solar cell is given for a given irradiance and temperature. Given a constant irradiance and temperature, why is the voltage changing in an I-V curve? Is the voltage something that we ...
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I'm located in The Gambia which is almost on the equator. We get over 11 hours of sunlight on Dec. 21st. Being a tiny country, daily travel is minimal, at most, maybe 28 km. If I place a 400 watt ...
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I replaced the oven at my small condo (600 sqft). Oven is 2300 watts/ 9.5 A. It needs a 20A breaker. The panel has a few empty slots. Question: What's the best way to confirm that the panel can handle ...
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I am designing a panel and would like to include a main contactor that switches off the entire panel on pressing the emergency stop button. There's an MCCB at this panel's input. However, I would like ...
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I am trying to understand a temperature rise test that is being conducted over a switchboard. The test conforms to IEC 61439-1. The clause 10.10.2.3.1 (Method of test - General) regarding the ...
DaSnipeKid's user avatar
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I have two LCD panels that I want to use, but they don't have any electronics, case or anything with them (I got them from a computer shop that was shutting down). I need to figure out what PCB they ...
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Enclosures for Electrical Equipment & Panels at Electrical Rooms, Substations and other facilities are typically "industrial grey" colored. From questions like in mikeholt.com, se.com, ...
Brethlosze's user avatar
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I look at solar panels for sale and notice that a 12v 250w panel gives 13.9amps while a 24v 250w gives only 6.6amp. which is why I asked if the 24v would charge my batteries as efficiently as the 12v. ...
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I am looking for a way to power my webcam without having to use a long extension cord outside. I have come up with this circuit. Will it work? Can I improve it? Thanks in advance for the help!
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In the 240V Single Phase panel in my home the ground bus is tied to a water line. My concern is water flows via a non-metallic pipe from the artesian well to a holding tank. A copper line connects the ...
Steven K7FAQ's user avatar
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I am from Colombia where recently was opened a solar park with a power of 61 MW link to news I consulted the Solar radiation in the area and has a value of 5 kWh/m², the solar cell efficiency is 20%, ...
TTT2's user avatar
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At the top are wires coming out of a terminal block. On the left are gray tubes running into a cabinet full of sensors, motors, etc. Are these gray tubes conduits or cables? What is happening at the ...
DJG's user avatar
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How would the basic cabling in electrical panels be technically described (in order to make a purchase, for example?) Does it have a certain number of cores? I'm talking about the kind of cabling you ...
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I have an AC and DC distribution panel installed in my cargo trailer. And I think I have an issue with my DC side of the panel. This is my first electrical work of any sort and thought it was going ...
JC5577's user avatar
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I finally finished a project in which I designed a 55 kW of PV system for a 50 kW load and I finally calculate costs and revenues over 20 years. I found that with a 25% of incentives for the cost of ...
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I currently have a 200 amp service with a single 200 amp meter. That meter feeds a 200 amp main panel on the other side of the wall that the meter is mounted to (think standard residential ...
ubiquibacon's user avatar
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I work as and E/E intern for a industrial panel company. A customer wants a 30kA SCCR panel. The input power is 3 phase 460V, an unknown distance from the main panel in the customer factory. Inside ...
Jeff A's user avatar
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Can anyone please describe to me how PCBs with castellated pins are arranged in a panel. My understanding is that castellated pins are formed by drilling the edge of a PCB then plating, similar to a ...
pcbguy's user avatar
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Standard metal electrical distribution panels are rectangular or square shaped boxes. Is there any standard - IEC, NEC, etc.- contraindicating the manufacturing of a custom shaped box for an ...
Brethlosze's user avatar
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I just started my job as an apprentice technician. For the longest time, my supervisor have always been measuring the amp draws of my motor from the outgoing cable from the motor to the electric panel ...
Hanif Shidki's user avatar
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Also, what is that circuit element symbol (an arrow leaving a rectangle) called, in the diagram next to the switch?
Victoria's user avatar
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I'm pre-wiring a distribution panel for future installation into my retirement home in the Philippines. I've read that grounding the DP to an earth rod or equivalent should require a minimum 6AWG/...
williamc's user avatar
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I've read that for low-voltage (less than 400 V) applications, the main difference between DC and AC wire is basically in the (temperature) rating of the cable sheath. If this is true, then the ...
williamc's user avatar
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i wanted to know how long will it take for the 12V 5W solar panel to charge a 12V 1.3Ah battery. and also whats the maximum voltage that the panel can produce
Bhavik Khatri's user avatar
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Can someone explain me the below circuit which is used to charge 12 V 1.3 Ah lead acid battery via 12 V, 5 watt solar panel? The circuit is shown below I need to know what is happening in this ...
Bhavik Khatri's user avatar
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So, this is my first question here in this forum and I don't know if I'm doing this right. Then in fisrt place, I'd like to apologize myself if I'm doing something wrong or if my english is a little ...
Lucas Sievers's user avatar
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My MPPT solar controller has no output leads. It contains only the (+,-)leads for battery and solar panel. Input is from the solar panel and output goes to battery.Therefore, I have to connect my load ...
ALI KHAN's user avatar
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I get 44 volts, 18 amps and 700 watts from two solar panels. I want to reduce approx 10 volts to run my inverter directly on solar panels instead of batteries during the daytime.
Sunil M's user avatar
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1 answer
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This connector is suited on a Sony car stereo front panel. Searched the net however could not find anything. I love to extend the connection with a sort of cable so it possible to fit the front panel ...
Codebeat's user avatar
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2 votes
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621 views

What is the best way to store solar panels when not hooked to a charge controller in direct sun? I was thinking about hooking each panels pos and neg mc4 connectors to itself so it will not be ...
rick's user avatar
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This is my first time incorporating fuses in my project. I am trying to source for some DIN rail mount fuse holders and the accompanying cartridge fuses. After much searching, I have found the fuse I ...
Cerezo's user avatar
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I built the attached circuit, I was simulating a solar panel buck boost voltage regulator to regulate the output voltage. The problem is that while it works and shows the appropriate output. It doesn'...
miyoshi23's user avatar
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I am putting together a design for a custom Electrical panel. The panel consists of mainly DC powered components (Sensors, Controllers). Components are to be mechanically positioned using a DIN rail. ...
Cerezo's user avatar
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I tried to get a panelized PCB from Altium using the embedded array option from the PCB Doc file. But, I get a continuous board edge around each of the PCB replicas: it would actually need mouse bites ...
Dev San's user avatar
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3 votes
1 answer
875 views

We have a motor control centre installed in garage for a commercial outlet. The MCC has a SMC-Flex ( Low voltage soft starter). The control relays (700 HA33) are connected to the SMC control ...
DaSnipeKid's user avatar
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I'm not sure if this is the right forum for this question. I'm asking here in hopes that someone has dealt with this. If this is the wrong forum, please do not vote me down. If necessary, I'll simply ...
dcorsello's user avatar
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There is 23 feet of AWG 1 conductor from the open delta transformers to the service panel where the bolted short circuit and arc flash occurred. How do you include the impedance of the conductor with ...
Jtl's user avatar
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4 answers
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Can the following be caused by short circuit without any arc flash? There was an initial short between lugs and chassis. Did arc flash occur that caused the lugs to melt. Or can it melt just by the ...
Jtl's user avatar
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This is a project I imported from Eagle (not so bad by the way). I resolved all schematic compilation errors. But now I am facing some small issues in the PCB part: On the properties panel when I ...
Dony's user avatar
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How to estimate average variation of input solar radiation that would be tolerable for a given solar panel? On what parameters will it depend?
Megh's user avatar
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2 votes
3 answers
6k views

I'm trying to understand which voltage I need to charge my NiMH batteries so I can purchase the components to do this. Actually I have 2x AA Ni-MH 1.2 V 1900 mAh and 4x Solar Panel 2 V 220 mA (0.44 W)....
user3649959's user avatar
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2 answers
264 views

Flat Keypad or Membrane Keypads are cheap and beautiful Keyboad that can be used in systems. but the question is how can they be mounted in a box or panel?
david's user avatar
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So, this is where I am at currently( no pun intended). I am assuming that with an inverter for both components and 3 - 4-18650 cells in series - in parallel rated at 4800mAh would be good enough? Ill ...
Alex Gasper's user avatar
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3 votes
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I got used battery MODULE with the next specs "40V 18.4AH 736WH build of ninety six A123-26650 LITHIUM LIFEPO4 cell " Cell specs: Nominal Capacity: 2300mAh Voltage(nominal,V): 3.3V Internal ...
Hosamsad's user avatar
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2 votes
1 answer
2k views

Over the years, I've accumulated numerous LCD panels and controller boards salvaged from TVs, Monitors, Cell Phones, digital picture frames, GPS devices and tablets. I would like to reuse the panels ...
user148298's user avatar
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I'm new to Electronics but I love solar panels and hiking. So, I bought 2 of these and one of these and I connected them. I cut 2 USB Cables, connected + with + and - with - from each Cable and ...
aninteresteduser's user avatar
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I have a 235 W solar panel that I wish to take with me on camping trips. I’m looking at getting a Goal Zero “solar generator” product to store the energy from the panel, specifically the lithium-ion ...
Dustin Trombly's user avatar
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