Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [solenoid]

An electromagnet combined with an actuator to convert electrical energy into linear physical motion.

0
votes
0answers
33 views

How Would you Communicate using single RS232 COM Port, 2 USB ports and 1 USB 3 port, with 20+ components [on hold]

I need to send/receive analog signals 0-5V to/from 20+ components so I can control them using a Java Swing App I am writing. (transducers, solenoids, actuators that type of stuff). I have the ...
1
vote
2answers
94 views

Maximum power for a 12V solenoid

I have a 12V 8A 35mm-stroke solenoid from eBay (similar to this listing) which I am powering with a 12V 20A PSU. I am using two of them for a homemade pinball game. At the moment they are hooked up ...
0
votes
1answer
73 views

Why am I measuring the power different than the given rated power?

There is a solenoid-valve where I measure its resistance as 55 Ohm across its terminals. The photo of its label is shown below: Above it says 24V DC 8W. But I measure the solenoid's DC resistance as ...
2
votes
1answer
70 views

Is a diode needed for this simple mini solenoid circuit?

I am building a mini pinball machine, which is about 10x22cm. To drive the flippers I plan to use this 5v mini push/pull solenoid: https://www.sparkfun.com/products/11015 , along with momentary SPST ...
1
vote
0answers
28 views

Are solenoid's magnetic field strength more dependent upon N loops or R radius of wire?

For a project my team and I are experimenting with different sized solenoids. We are trying to maximize the field strength exiting the end of the solenoid as opposed to internal field strength. The ...
1
vote
2answers
91 views

555 timer circuit switching automotive solenoid with PNP & NPN switching transistors

I am trying to design a 30 second timer circuit to switch an automotive solenoid that draws about 0.8 amps, and need some help please. StackExchange posts have been very very helpful so far, and by ...
-1
votes
1answer
81 views

total newbee question : use transistor as a switch

Ok, I don't know anything about transistors, and my knowledge about electronics is basically limited to U = R . I and ...
1
vote
1answer
63 views

Can this capacitor move this solenoid kicker [duplicate]

I'm buying this solenoid: The data are: Voltage: 12V DC Current: 8A I need to build a kicker: push a button, capacitor charge, when is charged the solenoid kick an object. I want to do it with ...
1
vote
1answer
46 views

Choosing the right (flyback) diode to stop contacts (points) arcing (sparking) on solenoid (relay)

Clock with a simple electric remontoire, consisting of a solenoid, with an arm, that kicks back the main spring, rewinding it. Solenoid coil data: operating voltage: 12V-15V measured resistance: ...
1
vote
0answers
67 views

Control magnet through stainless steel wall

I'm a mechanical engineer enthusiastic about learning electrical engineering and I speak french so I thank you in advance for your comprehension and your help. I would like to be able to activate an ...
1
vote
1answer
56 views

voltage drop - operating a solenoid after a logic gate and a LED

I have started meddling in circuitry, but I lack any sort of formal training. Subsequently I apologise for my ignorance. The circuit I have made (on paper) so far has a number of issues, but I want to ...
0
votes
4answers
127 views

Controlling 12V Magnetic Latch Solenoid with RaspberryPi 3b

As the title says I am trying to control a solenoid with a raspberry pi. I am currently using an npn transistor (will post link with parts at the bottom) however I am having a hard time getting it to ...
0
votes
1answer
30 views

custom solenoid trigger circuit

I have a custom made solenoid that is required to work at 60V to actuate with enough force. I have tried two circuits shown in the figure below but both don't work. In the first circuit, the voltage ...
1
vote
0answers
454 views

Wiring DIN connector with 3 wire DC solenoid valve

im buying [smc VQZ 212 5YZ1 C6] 3 port solenoid valve with 2 possible position(let say A and B). This solenoid work with 24VDC and have 3 pin/ wire. There is No 1, No 2 and GND pin. I will never ...
0
votes
2answers
60 views

24 VAC sprinkler valve using DC power

I am creating a circuit that includes a 24vac sprinkler solenoid. I need it to be portable so I'm planning on using DC current rather than AC. What is the best way to do this? If I just use straight ...
0
votes
1answer
61 views

Raspberry Pi Zero - PWM & Python Help

Disclaimer: I am very new to electrical engineering, but I'm determined to figure this project out. I'm currently working on electronic solenoid lock. Here's a image of what I have so far. I have a ...
1
vote
1answer
80 views

Operating a 24VAC solenoid with a Triac. Protecting with TVS DIODE, RC Snubber or both?

As part of a project I am controlling 24VAC solenoid sprinkler valves like this https://rayshobby.net/wordpress/understanding-24vac-sprinkler-valves/ using a triac (BT1308W) http://www.mouser.com/ds/2/...
1
vote
2answers
92 views

Why there is a voltage drop while connect multiple 12 V or 24 V solenoid valve with a 24 V DC adapter

I am doing a water plant project. I need to control multiple solenoid valves with my micro controller circuit using relays. When I connect more than 4 solenoid valves (12 V) with a 15 V adapter it ...
0
votes
2answers
72 views

Boosting voltage to power a solenoid (pulsing intermittantly)

I would like feedback on the following circuit design please. I am powering a solenoid using a 3S LiPo battery but want to increase the voltage to 35v. I am using an XL6009 module to boost the ...
0
votes
1answer
27 views

triggering a solenoid valve from batteries charged by hydroelectric system

I'm providing a slow-closing solenoid valve for a hydroelectric system in a village in the Philippines. I need to have the normally closed valve activated to open when the batteries are drained to a ...
0
votes
1answer
48 views

Can someone help me design a circuit that will open when power is applied and close after power is removed?

I am using an air conditioner thermostat transformer which provides power to my circuit. When the thermostat powers up, the door opens. I want the door to remain open until the thermostat shuts off, ...
0
votes
0answers
36 views

Turns per unit length and inner core area of solenoid with multiple layers of windings

I have wound a solenoid with 675 turns of 16 gauge wire. The windings are in layers, one on top of the other, for a total of about 17 layers of about 40 turns each. The end to end length of the ...
1
vote
1answer
38 views

Why does a Solenoid driven with intermittent duty cylce produce higher force than with continuous drive?

I'm selecting some solenoids with my MechE and I noticed something that I didn't have an intuitive explanation for. We were looking at this solenoid and noticed that at the bottom the forces ...
0
votes
1answer
54 views

Safe solenoid driver: can I use a slow blow fuse?

I'm building a device that uses a microcontroller to control 15 solenoids via a preexisting multichannel DC solid state relay board. When all is working as intended, at most one solenoid will be ...
0
votes
1answer
60 views

Proper Flyback Current Protection Circuit for Variable Voltage Solenoid Driver

I am using a darlington buffered op-amp to drive a solenoid motor at variable voltages (for variable speeds of actuation). Here is my circuit as it is now: I am wondering which of the two flyback ...
0
votes
1answer
110 views

Operating a 12V electric lock with arduino

I have a similar electric lock-style solenoid like this one. If we trust the manufacturer it draws between 1.2A and 2A at 12V .I'm currently using a N-Channel MOSFET 60V 30A - FQP30N06L it works just ...
0
votes
4answers
171 views

NodeMCU control 12v solenoid

I am trying to control a 12v solenoid from a NodeMCU. I bought the wrong MOSFET, I've got an IRF520 (the website I bought it from said the gate threshold voltage was 3.3v, so I thought it would work, ...
1
vote
4answers
148 views

Flyback Diodes For Inductive Loads With Long Wire Runs

I have a project that uses several high power DC solenoids (50 VDC) that will have ~10 feet of wire between them and the driver board. This is for pinball machines. These solenoids typically come with ...
0
votes
2answers
480 views

Increase the pulling force of a solenoid with a permanent magnet [duplicate]

I have a number of solenoids I would like to use in a project. The problem is that they're not quite powerful enough so I've been trying to come up with ways to increase the their pulling force ...
0
votes
1answer
86 views

Replacing the core of a solenoid to increase the pulling force

I have a number of solenoids I would like to use in a project. The problem is that they're not quite powerful enough so I've been trying to come up with ways to increase the their pulling force ...
1
vote
3answers
113 views

Why Does Flyback Current Destroy Darlington Buffered Op-Amp?

I am working on a project where I'd like to deliver variable DC control voltages to a continuous solenoid motor in order to achieve different velocities of actuation. To buffer my DC control voltage ...
2
votes
1answer
346 views

Driving a 24VAC solenoid with arduino using a octocopuler and a triac

Following a previous question I have redesigned my schematic: I'm trying to energize a solenoid used to open and close a 24VAC sprinkler valve I have the following questions : 1) The GPIO leg can ...
0
votes
1answer
174 views

Controlling a 24VAC solenoid with arduino

I'm trying to come up with a design for controlling a 24VAC water valve with an arduino. My current design : I want to use a BT1308W TRIAC controlled by an arduino pin to activate the vale, I'm also ...
2
votes
2answers
89 views

how do I make a solenoid operate after a random number of switch presses

New to the forum because I am stumped. Im building what I am calling the "water table" for my kids. It has a series of spigots, and channels that funnel into a kiddie pool. Then I got creative and ...
6
votes
5answers
1k views

Automated test for pushing a pcb mounted mini push button

We have a test that checks whether or a push button works or not, and as of now the test is done manually by hand. My question is how to do this automatically? We have considered using a solenoid to ...
0
votes
0answers
60 views

Solenoid control with current limiter - is it correct?

last year, I designed a solenoid control board which is still working very well. The board was based on ATmega328p and used an optoisolator 6N136 to isolate the high power from the low power and I ...
3
votes
0answers
157 views

0.5 tesla solenoid

Alright, I am supposed to make a solenoid (water cooled) having 0.5 T field at the center. The solenoid should be ideal so we are supposed to make the length of solenoid quite large as compared to ...
0
votes
2answers
46 views

Alimented coil close to a passive coil

If I build a coil A, of 10cm height with iron core and a 4cm diameter, and alimented it with a DC 15v,6amp source, it will produce a magnetic field. Let’s say A is set vertically. Will building ...
0
votes
1answer
176 views

Not enough power going through IRLZ44, activated by Arduino

I've a 9v battery and I'm trying to get 9v through my IRLZ44, to power an solenoid. It's a seperate system from my arduino who's sending a 5v signal to the IRLZ44 in order to activate it. For some ...
1
vote
1answer
256 views

How do I use a hit and hold circuit with a solenoid?

Solenoids burn power when turned on and get hot, what is a way I can reduce the power while keeping the coil actuated?
1
vote
2answers
83 views

Power supply for a solenoid to open a secret compartment

I'm an avid DIYer, I don't know anything about circuits, meters, mathmatical equations etc. I have created a secret storage compartment so the door has no visible hinges, handles or locks, It's made ...
0
votes
0answers
28 views

Firing 8 Disposable Cameras Shutters via Solenoids

I've found an 8-channel SRD-05VDC-SL-C relay. The solenoids I am looking at are: Solenoid repelling 0.18 N/mm 2 N/mm 12 Vdc 1.1 W https://www.conrad.com/ce/en/product/502285/Solenoid-repelling-018-...
0
votes
1answer
100 views

Electromagnet flux density calculation knowing specs of coil, core and applied voltage?

Seems to be almost a textbook task from a freshmen class. But I am truly puzzled. Electromagnet has a coil of tightly wound 100 turns of copper wire around a cylinder core with relative permeability ...
0
votes
1answer
43 views

Solenoid valve part

Noob question, what is the pink one in the solenoid? Can it be bought separately? thanks
1
vote
3answers
288 views

Solenoid's field intensity calculation dependency on width/diameter of coil?

Textbook formula for field intensity in solenoid coil is H = (N * I) / l H magnetic field intensity in ampere-turns NI ampere-turns l is length between the ...
0
votes
1answer
114 views

Tape Deck solenoids

I found an old Tape Deck recorder that I tore apart to scavenge for interesting parts. Two different kinds of solenoids left me wondering: From an old service manual (not related to the tape deck ...
-1
votes
1answer
35 views

How to find which voltage a solenoid would operate in

What is solenoid used in Orbit 91213 water timer? I have one which lasted quite some time, but lately some issue in its circuit made the display useless, but I think solenoid would be intact. What ...
0
votes
0answers
53 views

Detection of switched on solenoid - charging station CHADEMO

I need to detect status of switched on solenoid (two switches, I attach the scheme) by RASPBERRY PI (GPIO) and I dont want to use comparator (amplifier). Any suggestions how to do it?
0
votes
1answer
108 views

Sizing zener and resistor for solenoid flyback

I am trying to drive a vibratory pump from a 220 V boost converter (the common 150 W DC/AC 12 V to 220 V boost converter found on ebay) and a MOSFET switched by an Arduino/optoisolator at 50 Hz. The ...
2
votes
2answers
490 views

relay contact fails (suspect sparking)

I have a relay which is rated for 30 VDC @ 10 A or 28 VDC @ 10 A (which appears on this relay module) and I am running 12 V @ 6 A through the relay and this solenoid. After a short amount of time (...