Questions tagged [solenoid]
An electromagnet combined with an actuator to convert electrical energy into linear physical motion.
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Using a Relay to control an irrigation valve solenoid
I'm using a JQC-FC3VDC relay. I control it from a microscontroller using a 3.3V signal through an opto-link. And the business end of the relay controls a 24VAC output which then activates the ...
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Sprinkler controller couples electrical noise between stations, firing wrong solenoid
I've been trying to troubleshoot a Toro DDCWP 4 battery-powered sprinkler controller which started exhibiting strange behavior this summer. This is a basic four-station controller paired with RainBrid ...
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Should solenoid be connected to NO or NC terminal of RF remote to retract plunger end off of edge of tiny spring-loaded door so it can snap closed?
Remote-control nestbox bird trap. End of solenoid plunger will rest on edge of the tiny, spring-loaded trap door to hold it open until remote control is used to trigger solenoid to retract, releasing ...
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does rf remote transmitter power affect solenoid strength
Remote-control nestbox (bird) trap design calls for one 9V battery (pack with switch) boosted to 12V with MT3608 module to power 12V 433Mhz RF remote receiver, which is connected to a ZEY1-0530 ...
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Ring Video Doorbell / ghost rings with 16 VAC solenoid chimes [closed]
I have:
Ring Video Doorbell
(x4) solenoid chime operating on 16 VAC
The chime is a pre-2000's analog device. Presumably it uses an analog circuit to ring the solenoids in a pattern to make a ...
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Did I draw my circuit diagram correctly for 2 MOSFETS and a solenoid?
My project consists of one 5 V solenoid (but uses 3.3 V), one voltage regulator (5 V to 3.3 V), one diode, two N-channel MOSFET transistors, and one 5 V LED strip, all controlled by a Raspberry Pi ...
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Issue controlling MOSFET with PCF8575
I'm currently trying to control an array of MOSFETS so I can drive several solenoids. I'm using the Boron from particle.io as my main board, the PCF8575 as my I/O expander, the MAX3004 as a level ...
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Can a slanted magnetic field be created with this insulated stranded wire arrangement?
I am considering building a small-scale experimental coil gun because I have an idea of how a magnetized projectile could be rotated while it is traveling through the coil(s), similar to how a bullet ...
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Did I draw this circuit diagram correctly for 2 MOSFETS? [closed]
Did I draw my circuit correctly?
My project consist of one 5 V solenoid (but uses 3.3 V), one voltage regulator (5 V to 3.3 V), one diode, two N-channel MOSFET transistors, and one 5 V LED strip all ...
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H-bridge with two logic-level GPIOs drawing high current
I am working on controlling a bi-stable latching solenoid with an H-bridge.
The microcontroller that I am using for my project doesn't have enough GPIOs for me to use four pins for the H-bridge, so I ...
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Why is this Zener across the collector and emitter of this transistor driving a solenoid coil?
I am trying to understand a vintage (1970s) impact printer circuit. Each of the pins in the printer are driven by a small individual coil driver circuit, that was originally specified to look like ...
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Why is this zener in series at the base of transistor, and has something failed?
I am debugging an ancient little impact printer and in my probing have found an unexpected voltage level. I'd like to understand this part of the circuit, why it's constructed as it is, and whether ...
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Equation for the force created by a solenoid
I'm trying to make an electro-magnet and I want to figure out what core and wire I need using math instead of trial-and-error.
I want it to produce ~1.5 newtons of force at ~1.5 inches from the magnet....
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Issue with solenoid valve sparks despite using two 1N4001 flyback diodes [closed]
As a student, I'm currently working on a science project where I intend to connect a 12V, 2A solenoid valve to a relay and subsequently to a Raspberry Pi Pico. The solenoid valve is powered by a 12V, ...
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How do I read the specifications on this DC contactor?
This is a solenoid from an Italian made marine windlass.
Could you please help me understand the specifications written on it?
From what I know, the coil and connector is 12V because that is the ...
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Linear Solenoid Pulsed
I have this part from RS: https://docs.rs-online.com/4238/0900766b81679254.pdf.
I understand quite well about why the solenoid can output more force (given same distance) or have higher power input (W)...
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PCB layout/schematics of solenoid lock control - Problem - uncontrollable unlocking
I have a problem with opening solenoid locks. Sometimes, immediately upon connecting the power, and other times after about half an hour or even an hour, the locks start to open uncontrollably.
I have ...
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Is my PCB ready for PWM solenoid control?
I am looking to upgrade my project to handle "back EMF" from solenoids when used in PWM mode in combination with MOSFET.
The original project lives on a breadboard, and I am attempting to ...
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Inductance of solenoid with solid metal core
Consider the solenoid/inductor like in the picture.
There is an air gap between the coil and the inserted solid metal.
The solid metal is from aluminum or copper (Both have a relative magnetic ...
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How to get a smooth operation of multiplexed solenoids
My project involves 100 small solenoids, that I either have drive individually, or hopefully I can drive in a multiplexed configuration, the same way LED displays are driven. Then I only need 20 ...
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Problem driving solenoids with an IRF540 power MOSFET
I am using an IRF540PBF power MOSFET to drive a solenoid with 24VDC which works beautifully. When I try to drive a stronger solenoid the MOSFET gets stuck in the on position until I power the system ...
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Testing a 24V motor - Can I simply connect posts to a 12v battery?
I need to test if a 24V motor works or not. How can I test this just to make sure it functions? Is it possible to simply connect a 12V battery to the 2 motor posts and see if it spins, then reverse ...
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Driving 12V hand wound solenoid using PWM
I'm trying to drive a hand wound solenoid (140 turns of 0.8mm enamel copper wire, 4cm long) with a 12V/2A power supply. I need to control the intensity of the force generated by the solenoid, so I'm ...
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Solenoid fails under PWM control
I have a 12V solenoid rated at about ~6W and 40kg pull.
I am controlling it using ESP32, IRLB8721PBF logic-level mosfet.
MOSFET gate-gnd is also connected using 0.5W 5.6V zener diode.
ESP32-gate is ...
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Finding the ideal parameters for a homemade electromagnet
I am making an electromagnet and I was watching some videos on designing one. I just have some misunderstanding about power calculations of electromagnets and I have some questions about it.
Q1)
1.1) ...
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Am I using these MOSFETs correctly?
I am designing and testing a circuit that charges a capacitor to around 50V using a boost converter when 'ARM' is high, then discharges it through a solenoid when 'FIRE' is high. ARM and FIRE are ...
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Maximum safe wattage for solenoid and duty time
Please can somebody put my mind at rest?
I work on a machine that is unpowered until fully assembled and it has a push-pull solenoid (195222-237).
It has become apparent that we need to cycle this ...
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What capacitance would I need to actuate a solenoid?
I have a project that requires I hit a 5 cm ball with a push-pull solenoid.
For the purposes of the project the solenoid needs to be actuated using a capacitor, but after reading multiple forums, I am ...
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How to connect a solenoid to the Adafruit Feather M0 Bluefruit LE
How would I connect the to the Adafruit Feather M0 Bluefruit LE to this Mini Push-Pull Solenoid - 5V so that I can via bluetooth send over instructions to the microcontroller to control the solenoid?
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Does winding a solenoid around a copper pipe reduce the net magnetic flux at all?
I want to wind an air core solenoid around a copper tube. One end of the solenoid is soldered to the copper tube. (See picture above). Will a magnetic field be induced in the copper tube that cancels ...
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