Questions tagged [24v]
Deprecated tag. Do not use in the future.
129 questions
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Read 24 Vac signal with a Raspberry Pi
I want to read a 24 Vac signal coming from my old automatic gate with my Raspberry Pi. The signal tells me if the gate is OPEN->24 Vac or CLOSED->0 Vac. Raspberry Pi input are 3.3 Vdc tollerant. ...
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How can I use 24V DC input for Arduino digital pins?
In this circuit, switches should be connected to 24V DC and arduino pins should check whether switches are on or off to control led behaviour. I don't know how to use 24VDC for this situation. I would ...
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Alternator output rating
Overview:
I am currently working on a project that requires a 24v alternator, which is powered by a mower engine.
This engine in particular runs around 3,000 RPM, and does not exceed 3,200 RPM (based ...
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Diode OR or transistor OR circuit?
I need a circuit that converts a 3.3V signal into a 24V signal. But I also need to be able to activate the 24V signal using a PCB switch. I can do it in two ways, using a diode OR or using a ...
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Send a 60Hz trig signal over a 9m cable
I want to send a trig signal over a 9m cable, the signal is around 60Hz (each 15ms it sends a 1ms pulse). In order to avoid electrical interference I convert the 3.3V original signal with the ...
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Interface 24V signal from one device to 3.3V signal on another device
I have a device A that sends a signal through an optocoupler, this signal travels through a 7m cable and is used by another device B that has a SN74LVC1G17SingleSchmitt-TriggerBuffer powered by 3.3V, ...
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How to power bulbs expecting 24V AC from a car's "cigarrete" socket?
I'm turning the trunk of my car into a UV-sanitizer chamber -- so that, by the time I return from the supermarket, the bags and the packages handled by strangers there are sterile.
To this end I ...
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How to add an emergency stop switch in a circuit?
I am into a project, where I have made a a bot, which has a 6 degree of freedom robotic arm with four wheels. I need to add a kill switch that is connected to a relay, which stops all the 10 motors. I ...
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parallel connecting 24v 1500mah NIMH battery packs and how to charge
After several of searches on the internet for information about charging NIMH batteriers, i feel the need for some clarification. I've gotten my hands on a bunch of battery packs. Each battery pack is ...
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Can I use 1 mm² wire for 24 VDC / 15 A load?
I am currently using 1 mm2 copper wire for a my application of driving a 360 watt motor, haven't caused any problems for me yet. The total wire length is around 3 meters. a voltage drop of 0.5 V ~ 1 V ...
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Which device will allow me to simply capture 24v?
I'm new to electronics, struggling to work out whether this is simple and I'm missing something or whether it's a lot more complicated that what I anticipated.
I have something (some device) that is ...
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Battery management for 12-24V motors
We have 4 12-24V motors which we want to connect to a 14,8V battery. Two of the motors are position controlled (M3 and M4, see figure) and will not draw much current as they will mainly be stationary. ...
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What is the maximum voltage for MPPT/PWM to charge a X volt battery?
I currently have a PWM 12/24v (auto commute) with ~18V as input and a 12V battery in the output.
I wanted to switch to 24V battery and I thought about going ~36v solar panel. (18V * 2)
Then I saw ...
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How to connect a 12V battery to a 24V system?
I have a 24V battery (two 12V lead/acid in series) connected to solar panels and I'm looking for a way to have a 12V battery and circuit. (But the solar array will charge the 24V system so i need the ...
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24V battery with both 24V and 48V loads [closed]
I am looking for a simple solution to power my sailboat motor, it’s 48V 12kW, so it’s quite beefy. I have eight 24V lifepo4 cells (4.5kW) each, a 24V DC generator and a 2kW of solar, I would like to ...
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Using ESP8266 to read digital input pin to be notified when motion is detected from 24VDC source device
Software developer here, trying to mess around with hardware (VERY NOVICE) and implement neat things around the house using ESP8266s and Arduinos.
I have a commercial wall plug that is activated when ...
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Arduino RGBW 24v LED strip driver
This might not even be the right place for me to ask, but I hope somebody can help;
I have an arduino mega with 4 PWM outputs (5v, fitted with 220 ohm resistor) that I would like to use to control ...
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Trigger distant camera using 3.3V
I need to trigger a camera using a 3.3V signal, the camera is at the end of a 3 meter cable. This camera has two trigger inputs, a 3.3V GPIO input and an optocoupler input with max input of 30V. I ...
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High Voltage Push-Pull MOSFET logic gates
Hello, I would like to implement typical MOSFET logic gates in my circuit with V+ at 24V and Input ranging from 0-24V. This posts a problem for the MOSFET however as I would either exceed the gate ...
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OK To Use This Male/Female Jack Combo For 24 Volt DC?
I'm using 24 volt DC motors along with 12 volt solenoid actuators for a installation piece. For ease of install and maintenance, I want to wire each motor with a barrel jack like the one below:
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24V 3D Printer - power ratings
I have a 3D printer at home and looking to improve some parts.
The PSU on the printer has no labels so I'm not certain what it's doing - but the 3D printer's spec. sheet says it's 600W peak and it ...
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Two server powersupplies in a row dangerous?
I have two server PSUs from HP which can output 12V with 1200W (HP DPS 1200.) My goal is to obtain 24V by chaining the outputs of the two units.
I have modified one of the PSUs so that the negative ...
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What's the benefit of 24V over 12V in solar and charging?
What are all the benefits of 24V solar systems over 12V solar systems in regards to solar panels and battery charging?
All I've been able to find is that you can use smaller gauge wire with 24V, ...
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24V LED Strip Circuit - Switch, Breaker & Wiring Size Requirement
I am running a long LED strip (24V, 21 meter, 0.6A per meter, so technically 13A).
The 24V PSU supplying power to the strips is to be connected to a switch that is rated 240V, 10A & 2400W.
...
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What can I add to a DC circuit, to limit the voltage to 24V and current to 16 amps?
I have a battery pack that can put out around 25V and 20 amps, but it needs to be limited to 24V and 16 amps.
Update:
This is a follow-up to my question from yesterday: Protected 18650 batteries ...
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24V signal switching optccoupler
We have a robot, and it has 32 digital output, fed into a homemade PCB.
On the PCB we have optocouplers, which have a forward voltage around 1.2-1.3V.
So I need to drop the voltage a lot. That's why ...
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LED driver putting out more voltage than rated?
The Background
I bought a 200W magnetic LED driver with hopes of replacing the 40W Philips-supplied driver that came with my set of Hue Lily outdoor lights. Each fixture requires 8W at 24v. This new ...
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Why do we still use high voltage at home (on sockets) in the 21st century? [duplicate]
Just wondering, most of all equipment at home have components/circuitry inside to transform high voltage (AC) into lower voltage (mostly DC), also all modern LED lambs. Modern products become more and ...
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Interfacing with a Nest Hello 'chime connector' module
I currently own a Nest doorbell that uses a "chime connector" between the doorbell wires and doorbell chime as shown below.
I have tried to create a digital doorbell chime that will wirelessly ...
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Speed limiter - 24v Motors
I'm looking for a way to limit the speed of some wheelchair motors in order to gain better control when using them in my RC device.
Currently the motors are very sharp and don't ramp up to speed, ...
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What can happen if 24vdc is applied to an Ethernet port?
We have a device with two RJ45 ports. One of these ports is for receiving 24vdc on pins 7(-) and 8(+) to power the device. The other RJ45 port is an Ethernet connection. The ports are of course ...
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Mini 360 DC Buck Converter [closed]
I have bought several DC Buck converters for my home-made 3D printer. I'm running a 24V PSU, but my fans are Noctua (12V) ones. So i want to convert 24V down to 12V. And the Voltage output works fine. ...
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Should I use constant current or constant voltage drivers for driving my PWM 24V DC Fans?
Hi everyone thanks for stopping by to lend your thoughts.
I need to run 2 circuits separately and control via Arduino uno PWM.
One circuit is 2x Noctua NF-A14 industrialPPC-24V-3000 Q100 IP67 with ...
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dc motor, hall sensor 10-20VDC to arduino
I have a linear actuator with a brushed DC motor with 2 hall sensors. I intent to use the sensors to monitor the position of the actuator.
The specifications of the hall sensors are as follows:
Hall ...
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PWM Dimming 24v with 3.3v input
I am trying to dim a 24v led-strip with a 3.3v PWM-signal coming out of a ESP32. Currently I have this circuit:
But there is one problem. It works for dimming till ~40%. But when I turn the PWM off, ...
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Wide voltage range input regulation (24V - 3.3V)
TL; DR: I need a circuit capable of handling input voltages from 24V to 3.3V (with a 10mA/5mA maximum current) and delivering 3.3V to the microcontroller (ESP32) input.
Recently, I've been working ...
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Can't get relay to work with 24vac transformer and ducting
Would like to preface this that I don't know a lot about electrical stuff but I try my best.
I am trying to control a HVAC duct damper with a raspberry pi.
I have the power-open-power-close duct ...
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4 input counter with display
I have 4 switching sensors for all around detection, they output either 24V or 0V.
I want a counter that will add 1 everytime one of the sensors detects something (sometimes 3 of them will detect ...
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24v to 12v truck cigarette socket wiring
Hi guys i have a aerpro 24v to 12v reducer, but it has a positive a negative and an earth wire i need to wire it up so i can plug it in to a 24v truck socket and then have the 12v going to a cigarette ...
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Arduino 24VDC motor speed control
I have designed a circuit with some resources from this website and I attached it here. I have given circuit connection in a breadboard and successfully run and control the speed of the motor. After a ...
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How to convert a digital signal from 24V to 5V
I have an industrial automaton that gives me a digital signal (24V or 0V) on its outputs and I want this signal to control an integrated circuit, but the integrated circuit only takes a TTL signal in ...
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Converting a 24v bldc to 12v
So I have been designing a brushless motor and the circuit that drives it is based off of this Texas Instruments one here. The only problem is that this circuit runs off a minimum of 24v. I would like ...
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Asymmerical measuring limits
I would like to know your perspective on the following:
When measuring 24VDC both the lower test limit (LTL) and the upper test limit (UTL) are defined by either product, safety or 'common' ...
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Voltage drop @24V2A using a MOSFET with Arduino
I'm not really good with electronics but i'm really trying to learn as much as i can, so please have mercy on my question :)
Hardware
So, i have an Arduino Uno, a 24V 150W power supply, a 24V 48W LED ...
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Can I Run An Appliance From a 24v Battery?
First, a little backstory. My wife is planning to operate a booth at some craft fairs and we require power for a piece of equipment (Silhouette Cameo, a computer controlled vinyl cutting machine). We'...
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24Vdc signal for 800meters distance [closed]
what is the best/simple way to get a 24Vdc signal (with minimal loss)
across 800 meters, without having to use an absurdly thick cable??
I am talking about a solenoid valve 24Vdc
and a proximity ...
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24V to optocoupler (voltage drop of 22.8V)
I have to detect a signal of 24V. The length of the signal is 1 second. So I use an optocoupler. The led inside the optocoupler must receive 1.2V.
First I use a resistor (4k7) but the resistor heat ...
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Help needed solve fire house problem 24v to 12v 100 milli amp [duplicate]
We are trying to make an antique bell work I'm told it needs 12v .1 /
amp or 100milli amp
Our current power system is 24 volt 20 amp can you please help us step this down . We were going to use a ...
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How to generate a -24V signal
I have to interface a specific motor, it has a weird driving board, I was in contact with the technical team from the manufacturer, and they told me that I have to send a -24V on a pin to allow it to ...
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5a 24v mosfet h bridge to power solenoid
I created a mosfet h bridge based on the design from bristolwatch.
I'm using it to power a solenoid (that needs +24v or -24v to open/close a valve). If I connect the solenoid directly up to my ...
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