Questions tagged [solenoid]
An electromagnet combined with an actuator to convert electrical energy into linear physical motion.
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Why aren't solenoid/electromagnet windings insulated?
This has been bugging me for a long time. Take this video for example.
I have always thought that electricity will take the shortest path. When the electromagnet's windings are uninsulated, it seems ...
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Why did my fuse blow after 3+ years of no problems?
For several years, I've had a solenoid wired to the 24VDC output of a PLC (Rockewell Automation 1769-OB16).
To protect the PLC output card, a fast-acting 500mA fuse was installed between the PLC and ...
user86927
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How critical is winding a solenoid/electromagnet neatly?
We've all seen the expensive toroidal winding machines on YouTube, and manufactured solenoids are always so neat in construction - as in: Each winding is neatly packed to its previous, without ...
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How to properly wind coils for a solenoid?
I need to wind a small electromagnet "solenoid?". About 3cm high and 2~5cm wide running at 5V/0.5A. This magnet will be put into a desk bell so it pulls the clapper down and rings the bell. I have ...
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My MOSFET operated solenoid circuit destroys my Arduino inputs
I made a series of PCBs to power some solenoid valves that use an external power supply. I switch them with BS170 MOSFETs using an Arduino as gate signal.
I based it a solution by Jason S.
This is an ...
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Electrocuting a fruit fly using magnetic induction
We are electrically inducing heart attacks in fruit flies to test the effects of various treatments on survival. We are shooting for roughly a 50% survival recovery rate in our control group.
I work ...
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Is there such a thing as an ultra low power solenoid?
I am looking for a tiny push-type solenoid that can be driven with milliwatts. The plunger need only move 2-3 mm. Does such a thing exist?
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Do solenoids exhibit back EMF like motors?
I just purchased some pinball machine solenoids and was experimenting with them; DC resistance is about 30 ohm, they actuate at about 30 volts, and they hold at about 6. I tried controlling them with ...
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MOSFET broke after attaching capacitor bank
I have a solenoid that has a coil resistance of \$0.3\Omega\$ and accelerates a steel projectile here. I've posted the schematics below.
Normal Version that acts as a control
The GPIO8 goes to 5V to ...
user229515
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Why did the Lucas voltage regulator use rectangular section enameled wire for one of the windings?
In the 1930s and subsequently, Lucas supplied a car voltage regulator of the twin bobbin type.
A detailed description of how it operated can be found here, but in summary, one solenoid operated a cut-...
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Measuring the activation time of a solenoid
I'm trying to measure the activation time of a pull-type solenoid.
When the solenoid doesn't have a load connected to it, you can measure its activation time through the current it consumes.
At first,...
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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 ...
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Why is this reed switch / solenoid circuit not working?
The (normally open) reed switch should close by waving a magnet across it, completing the circuit. The 6v solenoid lock should pull inwards allowing the door to be opened. When the magnet is removed ...
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changing direction of solenoid
note I know essentially nothing about solenoids
I brought this solenoid thinking that I could use it to hit an object, but when I put it to a power supply, the only direction that it would go is down....
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Can Solenoids Get Sticky From Improper Usage?
I bought three spring-return, push-type solenoid. I can't remember them being sticky from the start because I only was using one at a time, but they may have been. Now that I tried to work them ...
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