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

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47 views

What is the difference between push and pull solenoid?

I want a solenoid that stays retracted and propels forward when current is passed through it. Is there a solenoid that does this? What is the difference between push and pull solenoid?
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2answers
57 views

Sense if USB is alive or dead ++

I'm using a 16 channel digital output module (NI 9375) from National Instruments which routes 24v (from a PSU) to several solenoid controlled pneumatic valves. So a valve is open when 24V is sent to ...
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0answers
56 views

What is the best way to share 12V, 22V, and 5V power?

Please bear with me - I'm a software developer that hasn't worked with electronics since college. I'm trying to replace the internal electronics on this pinball machine: ...
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1answer
31 views

measure instantaneous position of a solenoid piston?

I'm trying to improve speed & force of a solenoid and its power electronics strategy. So far I can measure many variables such as : tension current waveform shape time to reach final excursion ...
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1answer
60 views

Solenoid circuit current issue

I have been working on a circuit go make a solenoid switch polarity with arduino. I originally used transistors (NPN) rated for 1A and 625mW in between the ends of the solenoid and ground. These all ...
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1answer
36 views

liquid level switch and solenoid valve circuit

I am trying to make sure that I have this circuit hooked up right before I actually put it to use. I’m planning to use the liquid level switch (McMaster PN:50195K93) to open the solenoid valve ...
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0answers
27 views

Generating current from a high voltage power line [duplicate]

I learnt that power lines carry high-voltage electric current with electric fields and a magnetic fields around them (That i just think go to waste). So i was asking, if i surrounded a single power ...
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0answers
70 views

Can I wire 110v solenoid project straight to mains power?

I'm making a arduino project where the 5v current switches on/off a relay to power a solenoid. I've just bought a 110v 50/60Hz tractive solenoid and can't figure out the right way to power it. I'm in ...
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1answer
23 views

Autoelectrics: Testing components off 12v battery

I'm quite good with mechanics and am just starting to learn more about electrics specifically applicable to automotive. One thing I am still yet to get the grasp of is the way electricity behaves. It ...
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1answer
49 views

Arduino Controlled adjustable current 0-1A,18V

Hello Masters of Electronics, I'm civil ingeneer, electronics are big unknown to me, but it wakes up my interest. I would like to control proportional pressure with electronic proportional pressure ...
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2answers
79 views

Driving a solenoid with low voltage source

I have a 5V solenoid here, but my power source (battery) is only 3.3V . It's a pretty small solenoid, so it doesn't need huge amounts of power, but directly connecting it to the battery terminals wont ...
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0answers
64 views

How can I add redundancy to the flyback diode protection across an inductive load?

Dear StackExchange users, I want to add redundancy to a flyback diode system that is protecting an N channel MOSFET from flyback of an inductive load but I don't know how to accomplish this! I am ...
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1answer
69 views

Procedure for finding the right MOSFET, diode and resistor to make a solenoid valve open/close?

I need a right MOSFET to make a 8 valves open/close about 15 times per second! It needs to switch very fast. Anything that can slows the speed of the valves is not desirable. From what I see the ...
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4answers
127 views

12V solenoid drawing more current than it needs

I'm fairly new to practical electronics so I apologize if any of this is obvious. I am currently trying to use a microcontroller to control the energizing of several 12V solenoid valves using a PC ...
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2answers
59 views

Calculating peak current of solenoids

I'm a electronics newbie, and I'm making a project with 8 24v solenoids playing percussion quickly. I want to power these all with the same power source, so I'm being careful. This is similar to ...
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2answers
96 views

Electrolytic Capacitor in Solenoid Circuit

I was looking at a few solenoid circuits. I came across this one that had an electrolytic capacitor across it (whereas most just seemed to skip it). Does this capacitor serve any other purpose ...
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0answers
38 views

Driving solenoid with Microcontroller with variable strength

I am working on an interface to trigger physical drums with solenoids. Therefore I need to not only drive the Solenoids Hi/Low, but also change the force - ideally using PWM for each individual ...
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1answer
49 views

Sprinkler Control Power supply requirements questions

Not sure if this is the right forum or not... I am looking to build a custom sprinkler controller using a Raspberry Pi and a relay board. The question is around the power supply. The valve ...
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41 views

Solenoid Core Coil

Friends, I am working with Air core Solenoid coils. While I am calculating the lifting magnetic force of the actuator the answer I get is in Henries or in Tesla. Actually I am tying a 50gram weight in ...
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2answers
142 views

Many small and cheap linear actuators [closed]

Me and my friends are trying to build a linear actuator matrix. It's supposed to be a grid of pins that go up and down at reasonably fast speed (more than 1cm/s, the faster the better). Problem is, ...
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1answer
68 views

What kind of relay do I need for for 12V source with a 5V control voltage

Trying to figure out which relay I need for a project I'm working on. The source is a 12V battery, and I'm looking to turn on a 12v solenoid using a relay. I want the control voltage on the rely to be ...
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0answers
25 views

Circuit modification of OSBee shield for Arduino

I purchased OSBee shield board to control 24V Solenoid Valve. It utilized 5V external power to charge a capacitor and then release charge to open/close solenoid valve. However, I found sometimes it ...
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2answers
106 views

Is this the behavior of a broken mosfet?

I designed this circuit to switch on/off 8 solenoid valves for a programmable dancing fountain that I am building. The GPIO is coming from a Raspberry Pi. VCC is coming from a 12V deep cycle car ...
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0answers
52 views

Solenoid Circuit: MOSFET switch help

I am trying to operate a 5V solenoid using a IRLZ44N power MOSFET. My problem is I cannot get the MOSFET switch to work. My circuit: 5V into solenoid and diode (1n4004) in parallel into the drain of ...
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2answers
134 views

EMC considerations for driving a solenoid via PWM over a long cable

We're designing a circuit which essentially has the topology shown below. We're driving an inductive load (24V, 3.8Ohm solenoid - max avg current = 2A, but peak current can be 6.3A) using PWM. ...
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1answer
82 views

Might I be better off using a TIP122 Darlington than a FQP30N06L MOSFET?

This is a followup to: Simple ESD protection for MOSFETS I built the circuit described in the above post using FQP30N06L MOSFETs and after several hours of testing two of the MOSFETS died at nearly ...
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1answer
91 views

Need to choose between 48 solenoids, trying to design a proper circuit to do so

I am in the process of designing a project that will allow a Raspberry Pi to "print" to an old (60s) electric typewriter. I have decided to have a push-solenoid for each key (24V), for 48 total keys. ...
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0answers
66 views

Reversing motion on a bi-directional solenoid

I have a Ledex 4EM rotary solenoid (26awg winding) that, by using permanent magnets in its construction, changes direction depending on input polarity. I want to actuate this solenoid in one direction ...
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2answers
61 views

Inductor Reactance

I have a few questions about the reactance of inductors at certain frequencies. I have been working on a project that involves flipping the field in a solenoid with an air core at ~10-20 kHz with a ...
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2answers
153 views

Solenoid Driver Circuit

I want to drive a solenoid (12V load and 20A rating) using a MOSFET and an Arduino. What kind of switching circuit should I use?
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1answer
95 views

Tubular Solenoids and Arduino

I am interested in using this Tubular Solenoid at 3 DC voltage to operate in Continuous (100%) Duty Cycle. According to the specifications the solenoid can operate at a: Continuous (100%) Duty ...
0
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1answer
141 views

Can someone recommend a relatively small device that can move a 2 1/2 inch sphere weighing 6 oz 20 feet?

I am trying to find a method (solenoid?) by which I can strike and move a 2 1/2 inch ball that weighs 6oz with enough force to propel it up to 20 feet. Can a solenoid do this? I would not want to ...
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2answers
200 views

Solenoid strong enough to open lock latch [closed]

I am new to electronics and am trying to build a fun project that needs a solenoid strong enough to push/pull the latch open of a masterlock (thats open or combo has already been entered) Im not sure ...
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3answers
139 views

Help with simple Arduino/Transistor/Solenoid circuit

I'm trying to use an Arduino+transistor to control a shutter (which I believe is a solenoid) at work. The shutter is normally connected to a power supply by two small wires (positive and negative) and ...
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4answers
197 views

Basic question - multiple solenoids in parallel

Please excuse my ignorance - I am first and foremost a software person, and I only fool around occasionally with hardware... I want to get 5-6 solenoid valves working in parallel. The solenoids are ...
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2answers
268 views

arduino mosfet solenoid

I'm trying to drive a solenoid with an arduino pro. I've assembled the typical MOSFET approach with a protection rectifier: The circuit works, and the solenoid is triggered, but very weakly. In ...
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0answers
66 views

EMI/EMC filters for different frequency sub-circuits

I am designing a PWM based solenoid controller. The PWM controller works at 23kHz with an average circuit consumption of 23-45mA. The PWM controller is powered by a non-isolated SMPS with 12V output ...
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1answer
81 views

mechanical relay output voltage doesn't change

As a followup to my previous question, where a 2222 npn transistor wasn't beefy enough to handle the load I was putting on it to activate a solenoid valve, I decided to try a mechanical relay board ...
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2answers
141 views

transistor toggles an LED, but not a solenoid valve

I'm working on a hobby project where I'm trying to drive a solenoid valve with an arduino (for some automated plant watering). The solenoid valve takes 12v, so I've rigged up some smaller batteries ...
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1answer
263 views

Actuating a solenoid through a capacitor

I would like to actuate a latching solenoid through the following circuit: simulate this circuit – Schematic created using CircuitLab A capacitor is charged over a resistor. When this ...
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2answers
500 views

Latching solenoid control

I am working on a personal project that will involve driving a latching 9V/DC solenoid from an arduino. The circuit I've come up with is dependent on two things, that I haven't quite figured out yet: ...
1
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1answer
221 views

Simple ESD protection for MOSFETS

I'm designing a MOSFET (FQP30N06L) circuit to drive a (50V, 3.4ohm) pinball solenoid controlled by a PWM pin on an Arduino DUE: simulate this circuit – Schematic created using CircuitLab ...
0
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1answer
159 views

solenoid hammer trigger control

I am new here and a newbie regarding electronics, I shoot PCP air rifles and have a small project regarding the air rifle. The shooting mechanism is consisted of a trigger releasing a spring loaded ...
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2answers
180 views

Electrical behavior of holding magnets when you pull them apart

I'm going to buy a holding electromagnet and a strike plate to hold some things, and I want to design my circuit (arduino-controlled) not to fry like bacon. I'm aware that since a holding magnet is ...
0
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1answer
66 views

Determine the speed of a solenoid

I've found this solenoid online. In my current project I try to generate fake recoil for a lasertag marker. Now my question is: Can I determine the time the solenoid needs for completing one cycle? ...
0
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1answer
67 views

Magnetic flux outside a solenoid perpendicular to the direction of axis of solenoid

I know that using straight forward Biot-Svart law it is possible to calculate field inside a solenoid or at a point on an axis away from the circular coil. Now is it possible to calculate the Flux ...
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1answer
50 views

Alternate to a proportional linear solenoid

I am trying to build a circuit using gears, motors, and relays only which mimics the motion of a proportional linear solenoid i.e. Hold a spring compressed at a certain distance depending on the ...
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2answers
104 views

Using a solenoid to open a door

I'm trying to rig up my door to be unlockable using RFID and an Arduino. The problem is the actual mechanics of unlocking the door. There's a few limitations: I can't actually unlock the door. It's ...
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1answer
108 views

Bistable solenoid unlatching voltage

In my design two solenoids (MagLatch C5-L-272-B-1 and MagLatch B22M-L-154-M-36) are used. Each solenoid is driven by a H bridge powered by a voltage selector (12V or 24V). The command signals are ...
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85 views

change polarity of Solenoid

I am working on a project which includes a couple of Solenoids (Link to the used Solenoid: ...