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Subject:
timing / triggering device needed
Category: Science > Instruments and Methods Asked by: merigomish-ga List Price: $25.00 |
Posted:
18 Mar 2006 16:34 PST
Expires: 17 Apr 2006 17:34 PDT Question ID: 708930 |
hi there, i need an 'off the shelf' device which can trigger up to 6 or 8 solenoids with .01 second accuracy. the application is the timing of pneumatic and mechanical actuators for a high speed video shot. since we'll be shooting at 1200 frames per second 1 sec will be 40 seconds on screen, hence the need for .01 sec accuracy. devices to be triggered are low power 110ac solenoids. thanks |
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There is no answer at this time. |
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Subject:
Re: timing / triggering device needed
From: thebestprofessor-ga on 20 Mar 2006 16:50 PST |
Hi, Important question do you want to swich them independent from each other or dependent.? An " off the shelf solution" is to buy an interface for your computer and swich with the software that comes with it. Under $100, your problem is solved. Please mail me for further details. Prof. Kees |
Subject:
Re: timing / triggering device needed
From: larryg999-ga on 22 Mar 2006 13:04 PST |
1. ?1200 frames/second? translates to .0008 seconds per frame, hence the required accuracy would appear to be .0008 seconds or better. 2. These solenoids are described as ?low power 110vac?. Residential power in the U.S. is a 60 Hz sinewave whose instantaneous amplitude varies over e.g. a 10:1 range during each 10-frame interval (at 1200 frames/sec). The solenoids would need to be powered (via trigger switches) from a DC supply. 3. Ideally, each of the 8 solenoids would be triggered independently, so that each timing signal could be ?trimmed? independently +- a few milliseconds, to compensate for solenoid-to-solenoid variability, to achieve exact simultaneity. |
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