All Questions
18
questions
0
votes
1
answer
43
views
Supercapacitor Solar Cell Locking Device
I am trying to use a solar cell to power a locking device. The solar cell being used is a custom 10W 9V. It charges a lithium ion battery which is used to power an MCU and a couple of other things (...
- 11
0
votes
0
answers
88
views
Right capacitance for a capacitor parallel over power output?
I am building a self playing piano. I daisy-chained 11 74hc595 shift registers to control (11*8) solenoids. (figure 1 only shows 1). The solenoids are rated at 2 Amps each.
I use SPI from the arduino ...
- 35
2
votes
2
answers
579
views
Isolating the solenoid and driving relay power supply
I am using a relay module to drive a solenoid based on the output from my micro-controller which provides 5v signal. Following is what the circuit looks like:
My objective is to hook up both relay ...
- 25
0
votes
1
answer
443
views
How long can you power a solenoid? Is heat an acceptable way to check?
I am wondering how long you would expect a standard electromagnetic solenoid like this to be able to be switched on? Any first hand experience would be appreciated.
If there is no data on this - is ...
- 1
2
votes
0
answers
199
views
Why does this 6V solenoid activate on 4 AA batteries but not on a MT3608 step up booster?
I have a JF-0530B 6V solenoid that is rated at 300mA, and if I hook it up to 4 AA batteries it indeed activates on the roughly 6V the batteries supply. However, I also have an MT3608 step up converter ...
- 473
1
vote
1
answer
100
views
PWM that can handle rapid on and off cycles?
I am working on a prototype project with a large electromagnetic solenoid. I want to be able to vary the strength of the solenoid via a PWM (preferred), or constant current.
The issue I’m having is ...
- 11
0
votes
1
answer
220
views
Circuit design and power management in an Arduino project with stepper motors and solonoids
I am working on a design for a Arduino driven project that controls a 1.7A stepper motor and 2 small solenoid valves. I am using a 12v power supply (Meanwell MDR-60-12) to power the stepper motor (...
- 1
10
votes
5
answers
2k
views
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
1
vote
0
answers
257
views
Solenoid bolt retraction power
i am looking at getting a solenoid bolt like this for a project but the problem is alot of solenoid bolts that i have ordered can be retracted by pushing the bolt in manually so for example with your ...
- 11
0
votes
1
answer
163
views
Why am I measuring the power different than the given rated power?
There is a solenoid-valve where I measure its resistance as 55 Ohm across its terminals. The photo of its label is shown below:
Above it says 24V DC 8W. But I measure the solenoid's DC resistance as ...
- 2,217
1
vote
2
answers
307
views
Power supply for a solenoid to open a secret compartment
I'm an avid DIYer, I don't know anything about circuits, meters, mathmatical equations etc. I have created a secret storage compartment so the door has no visible hinges, handles or locks, It's made ...
0
votes
1
answer
243
views
TIP120 and Solenoid Gas Valve
I have a Solenoid Normally Open gas valve rated at 29VA. It can be operated using 220VAC or 12/24/48 VDC. When i power it with AC mains voltage, it draws only 3mA @ 220V and the valve closes. When i ...
- 17
0
votes
4
answers
8k
views
How to increase the operating speed of a solenoid?
I'm working on a prototype of a small electric appliance. The part I need help with is a small box in which the floor needs to move up and down quickly to repeatedly bounce an object against the top (...
- 1
0
votes
2
answers
384
views
Good method to provide small additional voltage while on battery?
I have a circuit that drives solenoid lock rated @ 9V as shown below. The circuit works when the power is connected to the wall, which gives a constant 9V DC to Solenoid Power V+.
I also have a ...
- 506
1
vote
1
answer
1k
views
Are electric linear solenoids the best option to push a capacitive screen button on a smartphone? [closed]
I'm trying to figure out if electric linear solenoids are the best option to activate an interface element on the touch screen of my smart phone.
I have also heard of linear actuators and pneumatics ...
- 23