Questions tagged [solenoid]
An electromagnet combined with an actuator to convert electrical energy into linear physical motion.
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How can the magnetic field produced by the shading ring of a solenoid valve be 90° out of phase compared to the coil magnetic field?
I am trying to understand how the shading ring in solenoid valves is able to produce a 90° out phase magnetic field compared to the coil's magnetic field. The logic seems different from a shaded pole ...
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Can you actuate a solenoid with three different voltages?
Example, one end (S1) of a solenoid hooked to 12 V and the other end (S2) to either ground or 24 V.
Could you use an op-amp to raise and lower S2 to control the flow of current through the solenoid? ...
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DIY project, encountering difficulties with solenoids
I'm currently working on a project that is supposed to dispense something out of a container after receiving an input.
I have a solenoid that connects to an interior hatch. It will open up a hatch ...
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Charge pump as a solenoid driver
I have a solenoid valve, and the datasheet claims response times as low as 165 µs. I have driven the valve at its rated voltage (28 V) and am only able to get response times of ~3 ms.
The company that ...
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Door bell solenoid under alternating current [duplicate]
In my house, I have a set of door bells, fed by a transformer without a bridge rectifier.
Each of them basically consists of a solenoid with a spring loaded core, so when the circuit is closed, the ...
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How do I select a transistor base's parameters for controlling a solenoid?
I have a small solenoid which is to be powered by a DC power supply. Current is 5A. Resistance is 3.5 ohms.
I only want this solenoid to be on for around 20 ms, so I figured a transistor was the best ...
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Solenoid misfire with Raspberry Pi. Circuit works?
I have a clapper solenoid that can't seem to fully clap. I am assuming it is a power issue but I am at a loss for how so I figured I would post here in case I have missed something. This is what my ...
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Can I combine two inputs into one?
I have a device (schematic drawn by me) with two separate solenoid drive circuits.
I need two inputs for one solenoid. Can I simply combine the inputs through diodes like this? The inputs are digital ...
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H-bridge design works but only with inductive load
I have an H-bridge configuration using gate drivers and bootstrap capacitors to drive the high side MOSFETs. I have a load that I pulse with stored energy from a capacitor. The capacitor voltage is ...
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How do I cause a normally open solenoid to close when power is removed?
Background: I have an undersink 3-canister filter in my kitchen and wanted to monitor the amount of water going through the filter. I purchased a Digiten DFC15 water flow controller and a Digiten ...
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Short-stroke, high-force solenoid design for remote trigger latch design
I am looking for a good resource on solenoid design considerations. Moreso leaning to the basics of why what features do what, to further my prototyping on a project.
I am looking to design/...
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How do we calculate the cross section area and EMF in a solenoid?
Case 1: Consider an air core solenoid \$S_0\$ with inner diameter \$(d_{in0})\$ = 10 cm and the cross section area of the wire = 0.1 cm, outer dia \$(d_{out0})\$ = 10.1 cm. The number of turns in the ...
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Reduce size of power source [closed]
I want to use a 9 V battery to unlock a 12 V latch. I am using 8 AA batteries now. The 9 V battery will unlatch, but is too weak to overcome any resistance, no snap!
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Calculating optimum shape of an air core solenoid magnet pair with given number of turns
Consider a cylindrical \$N52\$ magnet with mass \$m_0\$ travelling in horizontal x-axis with initial velocity \$v_0\$ in \$-x\$ to \$+x\$ direction. It passes through an copper air core solenoid on ...
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Battery-powered 3-5 V MCU, but 12 V solenoids. How to power?
I'm building a battery-powered safe cabinet hobby project. It uses the 32L152CDISCOVERY board. I plan to charge it with a solar panel. I should operate at least 6 months without maintenance.
The MCU ...
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