Questions tagged [24v]
Questions relating systems powered by a 24 volt supply.
93
questions
0
votes
0answers
23 views
Testing a 24v dc fan
I have bought a new 24v dc fan for my 3D printer’s power supply. It’s meant to be quieter. To install it I had to crimp a JST-XH 2 pin 2.54 pitch connector onto the wires and open up the supply. I ...
2
votes
2answers
138 views
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 ...
1
vote
1answer
98 views
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 ...
1
vote
0answers
26 views
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 ...
0
votes
0answers
71 views
Charging 12V batteries in series and parallel
My question is simply: can 12V lead acid batteries be charged in a "mixed" fashion? By that I mean a situation where a number of them are connected in both series and parallel? This is best explained ...
0
votes
1answer
60 views
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, ...
0
votes
0answers
72 views
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 ...
0
votes
3answers
70 views
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 ...
0
votes
0answers
30 views
24v from 2x 12v DC power supply?
I have a box full of 1-6amp 12v power supply and 1 short run of 24v led strip, rated about 1.5amp draw at full blast.
Can I take 2x 2A 12v supplies (ungrounded plug) to run in series to easily ...
1
vote
2answers
28 views
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 ...
0
votes
3answers
107 views
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 ...
0
votes
2answers
59 views
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 ...
1
vote
0answers
56 views
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. ...
0
votes
0answers
82 views
Help DC/DC 24V 400W
I have a LED LAMP, fed by a 24V 400w 17A (car/firefighter) and times to times the battery needs to be charged, so we turn on the engine and the alternator, start the job, but the problem is when this ...
0
votes
0answers
62 views
VDS Fault on A4964 BLDC motor Driver
I am actually designing a BLDC motor control unit with the A4964 Driver.
I made the design for working on 24V supply.
I did severals test and HW/SW modification but unfortunaly, the motor won't run ...
0
votes
1answer
51 views
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 ...
0
votes
0answers
149 views
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 ...
0
votes
1answer
70 views
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 ...
0
votes
1answer
33 views
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 ...
0
votes
1answer
62 views
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 ...
0
votes
2answers
79 views
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 ...
0
votes
0answers
101 views
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 ...
0
votes
1answer
41 views
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:
...
0
votes
1answer
34 views
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 ...
0
votes
1answer
82 views
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 ...
0
votes
1answer
162 views
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, ...
0
votes
2answers
85 views
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.
...
1
vote
0answers
60 views
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 ...
0
votes
2answers
271 views
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 ...
0
votes
1answer
101 views
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 ...
-1
votes
2answers
137 views
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 ...
0
votes
0answers
2k views
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 ...
0
votes
3answers
164 views
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, ...
0
votes
4answers
182 views
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 ...
0
votes
1answer
102 views
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. ...
0
votes
1answer
120 views
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 ...
0
votes
1answer
162 views
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 ...
18
votes
7answers
7k views
How make a dual +-12V supply from a 24V SMPS
I'm trying to power a home-made load cell transmitter using a 24V single SMPS. I need to make +12, 0 and -12 Volts that are capable of 50mA. I wish to power multiple channels of opamps and bridges.
I ...
3
votes
1answer
265 views
Powering 9216 leds @5V, @24V with converters
I am struggling with a power supply question. I would like to power up and control 9216 LEDs -- strips of 144 LEDs/meter (WWA SK6812 - just like the RGB kind).
These are powered at 5V and draw 43.2 ...
0
votes
1answer
224 views
How to determin the load requirement for 24V DC power supply
I'm working in automotive industry, I got a project to add extra hardware to particular line. hardware actually requires 24v 70w. Now, we have a Power supply unit "power one he-24V-7.2a" in the ...
0
votes
2answers
618 views
Interpolate variable 0-24v to power a 12v fan and control it's speed
I want to replace the two noisy 24v brushless fans on my printer with high performance silent 12v fans, more specifically Noctua A4x10 FLX
The 3D printer hot-end fan is on continuously with 24 volts, ...
1
vote
3answers
468 views
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, ...
1
vote
1answer
713 views
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 ...
-1
votes
1answer
262 views
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 ...
0
votes
1answer
81 views
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 ...
1
vote
1answer
258 views
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 ...
0
votes
1answer
1k views
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 ...
8
votes
1answer
12k views
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 ...
1
vote
0answers
72 views
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 ...
1
vote
1answer
315 views
What will be the current of a 24V ATX power supply?
I have an ATX power supply with a +12V 8A line and a -12V 0.8A line. I assume if I used the -12V as ground to provide 24V, then the maximum current provided by the 24V line would be 0.8A?
