Questions tagged [panel]

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30 views

Lightest possible USB solar charger with 5V 2A to 3A output?

I'm doing a lot of wilderness expeditions an needs the lightest gear possible. I want to make a solar charger (for my nitecore nb10000) that is as light as possible and has a USB output 5V and between ...
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28 views

MIPI display driver qualcomm APQ8909W

We are tring to brinup a new display for a Qualcomm APQ8909W chip that's running Android 8.1. From looking at the kernel log during boot I can’t seem to see what display driver is being used/...
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29 views

Best way to create an Adapter to connect an eDP LCD panel to Mac/PC USB-C or DisplayPort?

I look for guidance on how I can best reuse a Panasonic VVX14P048M00 LCD panel (3000x2000, 13.5", 4-lane eDP v1.3) as a secondary screen via USB-C Video Function or DisplayPort. Besides adding ...
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2answers
62 views

Can metal electrical panels have a non-rectangular or squared shape?

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 ...
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40 views

Where do I measure the Amp draw of my motor which is connected to a centrifugal fan?

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 ...
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28 views

Identifying bad LED in series configuration

I have a panel of LEDs. They are arranged in sets of three. Some have burned out, and I can easily find the offending LED with a voltmeter. But some of them are only on the verge of failing - when the ...
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0answers
29 views

Need help with creating a schematic. LED off when charging, on when battery use

I'm new to the electric world and was wondering if someone with a bit of knowledge could help me out with a design. I'm trying to make a circuit that will have 2 LEDs on each side of the board. When a ...
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1answer
109 views

What does this switch do?

Also, what is that circuit element symbol (an arrow leaving a rectangle) called, in the diagram next to the switch?
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2answers
31 views

Grounding Distribution Panel Earth Busbar using 'split' cable?

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/...
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0answers
33 views

How do I disconnect this ribbon cable?

Please help. This is a ribbon cable inside of Benq Q22W6 monitor connecting main circuit to the panel.
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1answer
53 views

can I use DC battery cable rated at 600A to connect a 63A main AC breaker to a 40A RCCB in my distribution panel?

I've read that for low voltage (less than 400V) applications, that the main difference between DC and AC wire is basically in the (temperature) rating of the cable sheath. If this is true, then the ...
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1answer
103 views

how long will a 12V 5W solar panel take to charge a 12V 1.3Ah `lead acid battery

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
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1answer
73 views

Charge 12 V, 1.3 Ah lead acid battery via 12 V, 5 watt solar panel

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 ...
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1answer
81 views

How can I make a 16x16 led pannel without losing the brightness intensity of each single led?

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 ...
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1answer
183 views

overcharging issues in MPPT solar controller with NO output leads

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 ...
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1answer
33 views

Solar car ventilation system

I am a mechanical engineering student and for my final project I am designing a solar car ventilation system so I need to know how much power the air conditioner of a car (Mazda Lantis 323 2001) fan ...
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1answer
83 views

How to reduce to 10 V from a 44 V, 18 A solar panel supply?

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.
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83 views

What is the type and name of this 15-pin connector pair?

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 ...
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1answer
95 views

Storing solar panels in direct sun

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 ...
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2answers
39 views

Can I use a 32x6mm catridge fuse with a fuse holder specified at 38x10mm

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 ...
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1answer
426 views

Problem with Proteus Simulation of Buck Boost Converter - please help

I built the attach 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 doesnt't ...
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0answers
76 views

Protection Devices in DC ciruits

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. ...
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1answer
57 views

Incorrect gerber rout output in Altium

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 ...
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1answer
405 views

Is it necessary to provide surge suppressor to every control relay?

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 ...
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0answers
30 views

Durable, UV-resistant labeling for electronics enclosure

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 ...
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1answer
39 views

How to compute for bolted short circuit current taking conductor impedance into account

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 ...
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4answers
376 views

Was this caused by arc flash or just short circuit without any arc flash?

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 ...
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0answers
145 views

Footprint panel is grayed on Altium Designer PCB

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 ...
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1answer
46 views

Solar variation tolerance for a solar panel

How to estimate average variation of input solar radiation that would be tolerable for a given solar panel? On what parameters will it depend?
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2answers
1k views

Necessary voltage to charge NiMH using Solar Panel

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)....
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2answers
63 views

how to mount a flat keypad on a panel

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?
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3answers
266 views

Powering a PC monitor with batteries

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 ...
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0answers
87 views

New DIY project try to understand MPPT [closed]

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 ...
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1answer
573 views

Matching LCD controllers to LCD compatible panels

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 ...
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1answer
244 views

I need help connecting 2 solar panels in paralel

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 ...
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1answer
304 views

Electrical panel indicator lights flickering [duplicate]

I'm wondering what the underlying mechanism of the flickering of the panel indicator lights is. Are there electronic oscillators of some kind in there?
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0answers
74 views

Solar Panel Voltage vs. Consumer Solar Generator

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 ...
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1answer
616 views

Charging a car battery with solar panel [closed]

Sorry about the previous format, guess i was a bit confused and in a rush myself, So let me put it this way. I'm like, i have a dc battery and a solar panel which of course produce d.c so I'm ...
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2answers
341 views

C.P (unknown abbreviation, control cabinet drawing)

I don't know what "C.P" might stand for in a HVAC control cabinet drawing. Could anyone have a quick look? I'm not an electrical engineer, but a translator. Not sure what electrical component is ...
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0answers
61 views

24-30pin connector for digital picture frame

Hey all I have 3 27" lcd panels that I will be making digital picture frames out of and I am looking for advice on what i can use in order to use only 1 cable going to the digital picture frame since ...
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1answer
83 views

How can there be a non-zero voltage difference between Phase A on the left and Phase A on the right when they come from the same power source?

Hi StackExchange community, Here I have a wiring diagram that represents a portion of a circuit found in a hospital. The voltage difference was measured between phase A on the left and the phase A ...
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2answers
72 views

I need the name of a Hitachi TX26D60VC1CAB panels connector (picture included)

i have recently ventured into reverse-engineering this Compaq 420cxs panel. I have managed to find a semi-complete datasheet (more of a pinout-diagram) for it and with the help of an esp8266 based dev ...
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1answer
57 views

Can one wire solar cells to a computer to model data? [closed]

I hope someone out there is able to answer this- Is it possible to wire a few solar cells to a computer (using a USB) to analyze/model the data that's being acquired (i.e. voltage, amperage, etc.) ...
2
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1answer
254 views

How much time needs a 120W/15V solar panel to charge a 48V/2.1KWH battery?

Could you help me with this problem? I'm building a solar panel with these characteristics: No. of Cells: 36 Cell Type: Mono-crystalline 125x125mm 3.42w Max. P: ...
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1answer
307 views

PCIM176J panel meter

I scored a couple of panel meters stamped PCIM 176J. Anyone have a datasheet for this thing? Google found nothing.