Questions tagged [24v]
Questions relating systems powered by a 24 volt supply.
73
questions
0
votes
0answers
49 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
37 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
30 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
70 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
70 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
34 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
56 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
59 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
76 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
121 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
218 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
0answers
46 views
Bonding DC Minus to Ground with Resistor for Remote Power?
Layout:
I have a system that has 3 serial networks that run a variable length with one central processor talking to multiple endpoints via Modbus RTU, Canbus, and another rs485 that talks a protocol ...
0
votes
3answers
111 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
119 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
46 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
78 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
135 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 ...
16
votes
7answers
5k 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
177 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
103 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
406 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
390 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, ...
0
votes
1answer
436 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
218 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
74 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
215 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 ...
7
votes
1answer
10k 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
65 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
301 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?
0
votes
0answers
31 views
What do i have to change to use it with 24V 10A motor [duplicate]
I have built this scheme
But this works only with 12V because of Vgs=20V.
My question is: what do i need to change in this scheme to make suitable for 24V?
0
votes
2answers
39 views
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' ...
2
votes
2answers
462 views
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 ...
2
votes
1answer
1k views
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'...
1
vote
2answers
2k views
12V pump on 24V supply
I've got a small 12VDC pump that I used on an old project. I now want to use the pump on a different project and make use of a 24VDC transformer I have (because the project also makes use of a 24VDC ...
-4
votes
1answer
1k views
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 ...
0
votes
5answers
745 views
24V to optocopler (voltage drop of 22.8V)
I have to detect a signal of 24V. The lenght of the signal is 1 second. So I use an optocopler. The led inside the optocopler must receive 1.2V.
First I use a resistor (4k7) but the resistor heat ...
0
votes
2answers
79 views
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 ...
3
votes
4answers
946 views
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 ...
0
votes
1answer
263 views
5a 24v mosfet h bridge to power solenoid
I created a mosfet h bridge based on the design from bristolwatch.
http://www.bristolwatch.com/ele/moshbridge/mosh7.png
I'm using it to power a solenoid (that needs +24v or -24v to open/close a ...
-3
votes
1answer
246 views
relay coil issue
i've been googling my way through a problem and now i am stuck and haven't found an answer.
So here is what I am trying to do. i have 24vdc connected to the positive side of the coil on a relay and ...
-1
votes
1answer
981 views
0-5V PWM to analog 0-24VDC voltage with MOSFET
Im having trouble understanding how or if it even is possible to regulate a voltage with a MOSFET. I want to regulate an output voltage of 0-24VDC 0.5A(continuosly) with the duty cycle of a 0-5V 1kHz ...
1
vote
1answer
423 views
Transient Voltage Protection of an automotive circuit
Im an electronics engineer student, and im doing a project where im designing a circuit which will be used in automotive applications. More specific it contains a PIC controller which has 16 digital/...
2
votes
2answers
2k views
35v reading on 24v transformer
im troubleshooting a 24v ac transformer hooked to two doorbell circuits and on one of them I am getting a 35v reading. What could be causing this?
I am reading the voltage using a standard (cheapo) ...
2
votes
3answers
302 views
Industrializing a PIC micro-controller
I want to replace some timers with a PIC16F887 micro-controller. The problem is that the input voltages to the I/Os is going to be 24V which is too much. For the output part I was thinking about using ...
0
votes
2answers
2k views
Running a 24V motor on a 12V boat system
I'm trying to design a jigging machine for a fishing boat, using a RaspPi as the controller. (A jigging machine jerks a 1kg lure up and down near the sea bed, and pulls in a fish when it's hooked.)
...
2
votes
2answers
1k views
Why is there a resistor in this reverse-polarity-protection circuit?
I was looking at the recommended reference implementation for a particular integrated circuit (the TI SN65HVS880, data sheet here). It runs off of a 24 volt power supply. The circuit diagram looks ...
0
votes
3answers
702 views
Switch to stay ON until power removed (24V)
In my bathroom, I would like to install some 24v LED tape, some in a warm-white and some in a cool-white, that I can switch between at will. IE: I will turn on the circuit from the wall-mounted dimmer ...
1
vote
1answer
71 views
Remote switching in rural village
How might we control a 2" valve >2000ft away in a remote village. We're thinking that we power the system with a 12 v or 24 v solar powered/ battery backup. The spot in the village with line of ...
-2
votes
3answers
385 views
How to determine the maximum power required by given devices? [closed]
I need to power 4 devices with these power input specs:
...
