Electronics > Beginners
Need vibration 24/7 for a few weeks without breaking
<< < (5/6) > >>
vk6zgo:
Back in the day, when I worked at a TV Studio, we had a very small Sony picture monitor which spent its life in the instrument  panel of the station chopper.
It was for programme video, not part of the instrumentation, so didn't have to be "aviation rated".

As things happen, the tiny trinitron lost emission, so was replaced.
That was where the trouble started!

On refitting the monitor, it failed after a week, so it was pulled out & fixed.
Next try, we got a day.

Eventually we got it to be reliable by liberally coating the board & wiiring with "Silastic".

Over that time, we referred to the helicopter as "our multi-million dollar vibration test bench".

So there you are---- just fly your device around in a helicopter! ;D
Jeroen3:
The "official" way it a large surface transducer, a big coil and a large amplifier rack to shake whatever you bolt to it.

You can buy surface transducers on aliexpress. And pull some audio amplifier from somewhere else. With those I think you can get at least somewhere close to what resembles an "official" shock table.

If you can get away with the heat you might even have success with a lock solenoid.
jmelson:
Harbor Freight has a $55 "5 Lb. Metal Vibratory Tumbler Bowl" that ought to do what you need.  Maybe it will provide MORE vibration than you want, but sure worth a look.

https://www.harborfreight.com/5-lb-metal-vibrator-tumbler-67617.html

Jon
windsmurf:

--- Quote from: jmelson on June 25, 2019, 09:40:32 pm ---Harbor Freight has a $55 "5 Lb. Metal Vibratory Tumbler Bowl" that ought to do what you need.  Maybe it will provide MORE vibration than you want, but sure worth a look.

https://www.harborfreight.com/5-lb-metal-vibrator-tumbler-67617.html

Jon

--- End quote ---

I don't think that'll create vibrations in the kilohertz range which the OP said he wants...
joeqsmith:

--- Quote from: windsmurf on June 25, 2019, 09:53:35 pm ---I don't think that'll create vibrations in the kilohertz range which the OP said he wants...

--- End quote ---


--- Quote ---... and the frequency is not extremely important, but a bit lower is better. The motors I had are something like 10k RPM, but a few thousand RPM would be good if possible.
--- End quote ---

I was thinking from their original post, the motors were just an offset weight.  10K RPM or 167RPS,   so something under 167Hz was all they were looking for.

I hadn't thought about them trying to make a parts cleaner or a mixer.   I just assumed they were trying to do some sort of basic vibration testing.     
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod