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Questions tagged [gauge]

The tag has no usage guidance.

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3answers
64 views

Copper wire current ratings [duplicate]

I have seen a wide variety of different estimates for the maximum current rating for copper wire. For example, for 24-gauge copper wire, the Wikipedia article about "American wire gauge" claims that ...
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0answers
11 views

Cannot set battery profile on LC709203FQH-01TWG

I'm using a LC709203FQH-01TWG Battery fuel gauge. I can read the data provided by the IC, like temperature, voltage, RSOC (Relative state of charge), etc. I can also modify the temperature value, but ...
1
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1answer
176 views

On a wire designated as '3x14AWG' what does the '3x' part mean?

On a wire designated as '3x14AWG' what does the '3x' part mean? It is on a wire that is part of a surge protector power strip.
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2answers
103 views

Is it bad practice to connect wires of vastly different gauges?

I would like to connect an Anderson plug with 25mm² cable to a 12V AGM battery so that I can easily connect and disconnect different devices which will conduct currents of varying amperage. I may ...
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1answer
91 views

Unstable wheatstone bridge simulator circuit - help required [closed]

simulate this circuit – Schematic created using CircuitLab I am looking to implement a wheatstone bridge circuit so I can accurately adjust the signal into a strain gauge amplifier circuit. Is ...
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1answer
37 views

Mixing wire gauge questions

I am putting a 50W 3.4A max 12V solar panel on my camper van. I want the option of removing it from my roof racks & mounting it remotely (so I can park in shade, but still have the panel in the ...
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0answers
24 views

Strain Gauge Resolution

I have a torque strain gauge that is attached to a differential amplifier and then a non-inverting amplifier which connected to a myDAQ and I was wondering how to find the resolution of the system. ...
1
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1answer
53 views

DIY water tank gauge using analogue ammeter - linearity

A follow up question to my previous on building a DIY water gauge DIY water tank gauge using analogue ammeter. I have scrabbled together a "Euro type" sender (10 Ω empty - 180 Ω full) and ...
3
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2answers
113 views

DIY water tank gauge using analogue ammeter

Our (old) boat has a fresh water tank whose level was reported by a now broken gauge. For cosmetic reasons I need to replace the broken gauge with a similar form factor (I do not wish to cut the panel ...
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1answer
569 views

What nichrome wire voltage/amps is required to heat 1 meter [closed]

How can I work out what voltage and amps are required to heat nichrome to: Temperature: 220 F Length: 100 cm Gauge: 20 (0.85 mm diameter, 1.62 ohms per meter) I think I need 7 volts and 3 amps. I ...
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1answer
73 views

Is this cheap extension cord safely rated for 1625W?

Comparing two cables that I have, a cheap extension cord and an expensive "heavy duty" extension cord, both are rated for the same load. Is this an inflated rating or is it accurate for the white ...
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2answers
576 views

How can I calculate length of wire, given its gauge and resistance?

As the title suggests; I am trying to calculate the length of a wire given its gauge and resistance in ohms per 1000 feet. I also have the amount of voltage drop, which is 1.1 V. ...
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1answer
341 views

What wire gauge for use for JST-XH connectors with and without insulation?

I bought a variety kit of JST-XH connectors on ebay: The auction says: Wire Range: AWG 32-24 Insulation O.D.: 1.00mm (Max) But Wikipedia says that this connector supports AWG 30-22 and does ...
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1answer
90 views

Charger, load sharing and Fuel gauge

I'm designing a battery powered circuit where I would like to charge the battery via USB, and monitor the remaining battery capacity during operation. I'm using the following IC's: MCP73831 (charger)...
1
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1answer
162 views

What adhesive is best to glue strain gauges to metal?

I'm trying to use these strain gauges to measure bending of a metallic cantilever (metal TBD). Does anyone know what adhesive I can use to glue the strain gauges? I'd rather not have to use an oven ...
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1answer
66 views

Simulate Automotive Speedometer Sender

I am working on a project and I have run into a little bit of a problem. I have a speedometer gauge that I am trying to send a signal to on a bench (out of car). The way in wich the it works is ...
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0answers
78 views

Setup for a single 3 wire strain gauge

All, I am trying to set up a single 50kg 3 wire strain gauge (from Amazon) to a HX711 (also from Amazonenter link description here). I'd like to only use one of these gauges as I do not require the ...
0
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1answer
175 views

NiMH Batteries and Fuel Gauge

I'm currently trying to figure out the best way to make use of my gas gauge LTC2943-1 in conjunction with my pack of NiMH batteries. I am aware that voltage alone is not a sufficient measure of the ...
1
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2answers
147 views

A 5V @ 1A wifi surveillance camera placed 50ft away (indoor)

I need to place a Wifi surveillance camera near the entrance of my house where no power outlet is in that area. I pulled a wire wrapping wire (awg 30) to the target location without thinking about ...
0
votes
1answer
36 views

Wire Length Restrictions on Simple Battery Powered Circuit

Right now I am setting up a simple circuit with a switch at one end and a LED on the other. Basically it is going to be used for someone on one end to get the attention of the person on the other. The ...
2
votes
1answer
218 views

How to determine number of allowable wires in a crimp wire connector?

I bought a pack of single-ended crimp-style connectors at a standard hardware store. The data sheet specifies allowable wire configurations, but I am having trouble reading it. The linked data sheet ...
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4answers
5k views

Can small wire gauge restrict current? powering a brushless motor

The question is related to quadcopters and else. So my quadcopter (brushless dc motors and electronic speed controllers powere by 3cell lithium battery 2700mah 25C) has thin wires on the main power ...
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3answers
739 views

How to measure 6S LIPO battery juice in percentage from Raspberry Pi?

I've got a Raspberry Pi and I want to use it to measure the percentage of charge which a 6S LIPO battery pack has left which I then send to a server over the internet. I assumed there would be easy ...
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2answers
266 views

Lead acid battery charger and fuel gauge?

Can someone recommend me a lead acid battery charger and monitoring circuit? I've found such circuits for lithium batteries, but not for lead acid. Alternatively, I could use two circuits, one for ...
0
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1answer
221 views

Air-core gauge driver

My job is to redesign an existing product driving two gauges, currently based on PIC and obsolete Phillips SA5777A air-core gauge driver. I am free to make the design from scratch, but cannot change ...
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2answers
55 views

long leads for batteries, how to minimize negative effects

I just made a circuit consisting of a number of digital components including two microcontrollers and I will be adding a home-made radio unit to it. I will make a few other miniature circuits which ...
0
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1answer
154 views

Are Inclinometers/Angle Gauge's independent of gravity

To give a bit of background, I am working on a DIY wheel alignment just to save some money and possibly learn a thing or two. The camber/caster involves measuring an angle that is parallel to the ...
1
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1answer
411 views

what size cable for powering an LED sculpture?

I've got four 60 amp 5 volt power supplies, and I'm sending power to a sculpture with 3000 RGB leds. So here's the total power picture we're looking at... 3000 * 5 volts * 3 leds per pixel * .02 amps ...
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1answer
103 views

Determine small gauge wire (I think) from mm measurement

Below is a question I thought would be helpful to figure out a certain gauge of wire. Physically determine unknown wire's gauge My wire is .27 mm per strand in diameter, and has 10 strands. I ...
0
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1answer
43 views

Using a digital ammeter to loop power a pressure gauge

I'm trying to set up a digital pressure gauge which gives out a 4-20mA signal and needs to be loop powered. Rather than buying a digital pressure meter, I'm thinking of purchasing a 12-30 VDC power ...
1
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3answers
595 views

Battery gauge – Microcontroller 3.3V using a 4.8V NiMh battery source

Well I am currently working on building a battery gauge via LED. My target is a red LED to blink if batteries are going to die and a green LED to blink if the batteries are fine. Researching on ...
1
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2answers
1k views

LED lighting project wiring Questions

let me begin by thanking anyone and everyone for any help. I have a serious lighting project and am likely getting very ambitious. I am trying to wire up a series of WS2812 LED strips. Each 2 ...
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2answers
3k views

Is there a way to calculate the proper wire gauge?

I'm looking for the right copper wire gauge for my project. I've found several charts listing the maximum current that various gauges, solid and stranded, can transmit. The charts often disagree. ...
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4answers
25k views

Increasing wire gauge by twisting pairs

I have a cable like this with 4 wires inside. Each wire is 20 AWG. I've been told that I can twist the ends together (i.e. green and red, white and black) on both ends of the cable and this will ...
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2answers
636 views

Does gauge size of a signal wire has an effect to its susseptability to electromagnetic interference?

Let's say you have the option to use a lower gauge wire size (i.e. thicker wire) for a signal wire that happens to be run along power wires. Will it pick up more electromagnetic interference than ...
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5answers
20k views

Formula to find out the resistance per meter of a specific gauge of wire if I already know the resistance of a different gauge of wire per meter?

So if I know a 30 gauge wire's resistance at 1 meter, how can I figure out the resistance of a 29 gauge wire at 1 meter long of the same material? Or 5 gauge, or any other gauge? I need a formula, not ...
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1answer
531 views

Fuse and AWG choice for immersion heater circuit

I am planning to operate a 1500 W resistance immersion heater with an SSR and I'm trying to determine which fuse and AWG wire to use. The 1500 W heater on 115 VAC should operate at a current of around ...
1
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1answer
275 views

Combining 4 22gauge wires

I wanted to ask you a quick wiring question - I need to run a wire to my new thermostat from the furnace - I have a spare telephone cable in the wall that has 4 22 gauge wires. I'll be running about ...
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1answer
156 views

American wire gauge - why exactly this ratio?

Wikipedia on American wire gauge reads: Any two successive gauges (e.g. A & B ) have diameters in the ratio (dia. B ÷ dia. A) of \$\sqrt [39]{92}\$ (approximately 1.12293), while for gauges ...
4
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1answer
419 views

Why is it called a gas gauge?

Why are battery monitor ICs such as STC3115 (datasheet) called a gas gauge? This name seems pretty illogical and I was wondering the reasoning/story behind it.
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1answer
1k views

Maximum surge current through short run of 24 gauge wire

I'm making a sequenced rocket launcher. I want to apply 5 amps for 3 seconds through a 12 inch run of 24 gauge wire. Since the launcher has four slots, I figured I could use cat5 ethernet cable. ...
0
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1answer
147 views

Combine Lower Gauge Wire to Achieve Thicker Gauge

I have, for some reason, a ton of 30 AWG wire lying around. It's not really thick enough for a lot of applications. Would it be acceptable (and safe) to combine multiple strands of the wire and just ...
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2answers
10k views

Formula for heat wire Kanthal or NiCr Watt consume?

The input voltage is 220v in single phase. How many watt consumed for Kanthal A1 (heat wire) AWG18 for 30m at 1400 degree Celcius ? How many If I use NiCr 60 or 80 with AWG18 ? Does anybody know the ...
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2answers
3k views

Measuring the charge of a battery while charging

Determining whether a 12V car battery needs charge is as easy as touching its leads to those of a multimeter. While charging from a vehicle's alternator, the multimeter method fails to determine the ...
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2answers
11k views

1000 watts, 220 volt, 52" length, Coiled Nichrome wire

I need to use Nichrome wire for heating purposes. My heating temperature could be among 200 Celsius, voltage should be 220V, wattage should be approximately 1000 Watts, and length should be 52 inches ...
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2answers
451 views

Pressure gauge with analog output [closed]

I have a circuit that needs to electrically output a pressure value and display it using analog dial gauge. First I wanted to use regular round ammeters but they don't look like "real" pressure ...
2
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5answers
7k views

Which wire gauge for a 250 amp source?

I have no real experience with this stuff... I have two 6V 220Ah DC golf cart batteries that I want to put in series to make a 12V 220Ah output that I will connect to a 3000W power inverter, my ...
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1answer
975 views

Calculate gauge of wire with voltage and current

I would like to figure out these two things: X gauge of wire needed dependent on the current needed, and the length. X max length of wire dependent on the current, and the gauge.
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2answers
145 views

Giant Connector Plug

I'm looking for a very big connector plug, similar to the old SCART connectors, except I need it to be at the following specs: No Of Pins: At least 35, preferably 50 Gauge size: At least 12 pins with ...
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1answer
5k views

How do I tell what gauge wire I need?

I've been working on providing power for high current applications for my project. I'm working on a project with high current (or at least compared to what I'm used to...) What a lot of people point ...