Questions tagged [solenoid]
An electromagnet combined with an actuator to convert electrical energy into linear physical motion.
640
questions
0
votes
0
answers
74
views
What kind of relay / switch is this?
What kind of relay, if I'm right, is this? It is used in a PRCD.
Pictures from 3 sides.
- 1
1
vote
1
answer
67
views
Different types of linear solenoids
I want to use a linear solenoid and there are different types, pull, push and pull/push.
So I chose a push solenoid for my application and saw the following picture.
I know that the plunger goes ...
- 85
1
vote
0
answers
102
views
Proper circuit for a solenoid being triggered by a relay with occasional misfires
12V relay question…
I built a homemade pinball controller for my PC using a standard, 5 V USB encoder for the controls. I wanted to add some haptic feedback, so I decided to add a few 12 V solenoids ...
- 11
0
votes
1
answer
71
views
Optimizing Solenoid Control Circuit with FETs: Minimizing Inrush Current and Hold Current Precision
I'm creating a circuit using two FETs. The first FET (U2A) is responsible for controlling the inrush current of the solenoid, and the second one (U2B) is used to maintain the predetermined hold ...
- 903
0
votes
0
answers
58
views
Noise spikes with optoisolated circuit driving 12VDC solenoid valve at 6.6 Hz
I have an existing circuit that drives a 12VDC solenoid valve on and off at ~6.7 Hz, 75ms on, 75ms off. This entire system is DC.
The Beagle GPIO logic '1' level is 3.3VDC, and the BeagleBone is ...
- 31
10
votes
3
answers
1k
views
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-...
- 109
0
votes
4
answers
126
views
I have a solenoid rated at 24 volts AC, but at a trickle voltage of 1-9 volts the solenoid stays pulled in when it shouldn't be
I have a solenoid that pulls in at 24-30 volts ac to control water flow. It opens at 24 volts ac, but stays pulled in at a trickle voltage of .75 -1.0 volts. How can I stop this from happening?
0
votes
1
answer
48
views
Relationship between RMS-current and energy stored in a solenoid
Regarding the formula for energy stored in the magnetic field of a solenoid (U=1/2LI^2), I presume that the RMS value for an alternating current could be used for the I-value. Is this correct?
- 1
0
votes
1
answer
199
views
Diode in parallel with AC solenoid valve
I have a circuit I'm trying to design to fire both 120VAC and 24VDC solenoid valves. We have relays that work on 12vdc for the coil, and can switch AC or DC. the valves are normally around 30W. I ...
- 137
1
vote
1
answer
550
views
Modelling solenoid with LTSpice
Does anyone can give me a hint on how to modelling a solenoid (solenoid locker) with LTspice ?
Here is the characteristics from the supplier (https://www.lextronic.fr/mini-serrure-solenoide-12-v-58746....
- 21
3
votes
1
answer
367
views
How can I build the attached circuit diagram in a bread board?
How can I build the attached circuit diagram in a bread board? I've procured all the mentioned components.
The components I have are:
BLM5 Solenoid,
Vishay 100V 3A rectifier diode,
Welwyn 39Ω wire-...
0
votes
1
answer
163
views
Is this (working) 2-doorbell system dangerous?
In a previous setup, I had two doorbells, each one with its own 10V AC transformer, as detailed in Why is it impossible to connect these two doorbells in series or parallel?.
I now know it was ...
- 1,946
7
votes
3
answers
2k
views
Why is it impossible to connect these two doorbells in series or parallel?
I have:
one 220 V AC -> 10 V AC transformer
one push-button switch (at the door)
two bells for two different places of the house; they should ring together when the (single) door push-button ...
- 1,946
0
votes
0
answers
55
views
How does this motor work?
I have been on a bit of a quest to find some sort of linear motion device to compress a spring with 15kg of force 80mm at 1600mm/s, with continuous duty cycle, ideally under $40. So I was digging for ...
- 43
0
votes
3
answers
127
views
Linear Motor Design
I previously uploaded a question on trying to make a solenoid attract a magnet 80mm away, however this ended up being an impossible ask due to solenoid's having a max effective attraction distance of ...
- 43