All Questions
16
questions
0
votes
3
answers
165
views
Calculating current a capacitor can deliver
I made a simple coilgun circuit
Capacitor 50 V 10000 uF
DC power supply of 20 V - 5 A
Coil of enamelled wire 18 AWG - 3.5 ohm
My calculations according to Ohm's law the current in the capacitor ...
- 465
0
votes
2
answers
164
views
Discharging RC circuit for bi-directional solenoid?
I've attempted to incorporate a discharging RC circuit that will "unlatch" a solenoid when power is turned off. However, I'm not fully confident that I've correctly designed what I hope to ...
- 3
3
votes
1
answer
239
views
Running multiple solenoids with a seemingly "weaker than it should be" PSU
I work part-time at a piano maintenance center as an electronic engineering student. We receive quite a few self-player piano systems and recently, we got a big Steinway & Sons piano, a very ...
- 31
1
vote
2
answers
243
views
Stop 'bouncing' input from float sensor
I'm trying to resolve an electro-mechanical issue to do with a water fill solenoid, that is triggered by a float valve. The problem is as the water approaches full, the float bounces causing the ...
- 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
1
vote
2
answers
1k
views
Maximum power for a 12V solenoid
I have a 12V 8A 35mm-stroke solenoid from eBay (similar to this listing) which I am powering with a 12V 20A PSU. I am using two of them for a homemade pinball game. At the moment they are hooked up ...
1
vote
1
answer
2k
views
Can this capacitor move this solenoid kicker [duplicate]
I'm buying this solenoid:
The data are:
Voltage: 12V DC
Current: 8A
I need to build a kicker: push a button, capacitor charge, when is charged the solenoid kick an object.
I want to do it with ...
- 191
3
votes
2
answers
2k
views
relay contact fails (suspect sparking)
I have a relay which is rated for 30 VDC @ 10 A or 28 VDC @ 10 A (which appears on this relay module) and I am running 12 V @ 6 A through the relay and this solenoid.
After a short amount of time (...
- 135
0
votes
1
answer
3k
views
Capacitor to provide energy to solenoid
I’m building a simple garage door circuit that have two solenoid locks. Each solenoid lock is rated at 12V/3Amps and is only supposed to be activated during 3 seconds each time the “open door” button ...
-1
votes
1
answer
298
views
Power supply for multiple solenoids
I'm currently looking to power 10 solenoids:
rated (nominal) at 24VDC, 400mA, 10mm stroke, 25N. (JF-1040 no datasheet unfortunately)
I will be powering with a voltage higher, (giving me a range to ...
0
votes
1
answer
820
views
Simple solution to send a short pulse to Solenoid for milliseconds?
Imagine a Ding Ding doorbell scenario where we want to save our solenoid from burning if a visitor keep the button pressed for a long time.
For a 12v Solenoid If power button is turned on I want to ...
- 13
2
votes
1
answer
614
views
Solenoid capacitor circuit for paintball gun
Recently my electric paintball gun broke so i decided to come up with my own circuit. I tried to reverse engineer the one my gun had but it was covered in black glue...
I have been trying to design ...
- 21
3
votes
2
answers
774
views
MOSFET burning out when attached to a solenoid
Apologies for the very poorly written previous question.
We have a circuit that consistently burns out our MOSFETs when we attempt to use them at full power, 250V, but they seem totally fine at 200V.
...
- 291
2
votes
2
answers
11k
views
Electrolytic Capacitor in Solenoid Circuit
I was looking at a few solenoid circuits. I came across this one that had an electrolytic capacitor across it (whereas most just seemed to skip it).
Does this capacitor serve any other purpose than ...
- 663
1
vote
2
answers
3k
views
Supercapacitors vs. High Voltage Capacitors with Inductive loads used in CoilGuns or Solenoids
I'm looking for some insight on whether an 1000 Farads at 2.7v or 5.5v would be more effective than say 10,000uF at 400v-450v when creating a strong magnetic coil. The intent is something similar to ...
- 53