Page 2 of 3 FirstFirst 123 LastLast
Results 16 to 30 of 34

Thread: Possible strobe bulk buy

  1. #16
    wrench twister TGabriel's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Denver,NC
    Posts
    274
    Thanks (Received)
    1
    Likes (Received)
    4
    Mentioned
    0
    Tagged
    0 Thread(s)
    Quoted
    9

    Default Re: Possible strobe bulk buy

    I used Paul's LED strobes this past year also and no failures. I did just like John and power them up 20% before and they were random in firing.

    Thomas

  2. #17
    This space for rent. Al in Raleigh's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Raleigh, NC
    Posts
    3,531
    Thanks (Received)
    0
    Likes (Received)
    174
    Mentioned
    36
    Tagged
    0 Thread(s)
    Quoted
    73

    Default Re: Possible strobe bulk buy

    Quote Originally Posted by John View Post
    Al,
    Lost some of the CLS Xenon in each display though.
    Doesn't surprise me at all. Those strobes die on the way from CLS. Cheap junk.

  3. #18
    Registered User mschell's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Lexington, NC
    Posts
    1,165
    Thanks (Received)
    0
    Likes (Received)
    40
    Mentioned
    24
    Tagged
    0 Thread(s)
    Quoted
    79

    Default Re: Possible strobe bulk buy

    Quote Originally Posted by TGabriel View Post
    I used Paul's LED strobes this past year also and no failures. I did just like John and power them up 20% before and they were random in firing.

    Thomas
    I'm not surprised. By applying some power early, you're most likely pre-charging the capacitor that causes the circuit to "fire", which is exactly what you want to happen so that it's random when it finally comes on. The circuit on the LED strobes is probably simpler, since you're dealing with much less voltage to have the LED light up than a Xenon tube.
    Mark

    New location - new display. Looking forward to 2015 season!

  4. #19
    This space for rent. Al in Raleigh's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Raleigh, NC
    Posts
    3,531
    Thanks (Received)
    0
    Likes (Received)
    174
    Mentioned
    36
    Tagged
    0 Thread(s)
    Quoted
    73

    Default Re: Possible strobe bulk buy

    I wasn't sure if this was a simple RC circuit or whether it has some timing IC like a 555 on it. If it is purely passive components then it wouldn't hurt anything. I've seen cheap circuits onstuff like this that had an ASIC on it which would not like to be undervoltaged. Until John kills one then we won't know for sure.

  5. #20
    Trying to behave here-NOT John's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Chattanooga, TN
    Posts
    1,940
    Thanks (Received)
    0
    Likes (Received)
    24
    Mentioned
    1
    Tagged
    0 Thread(s)
    Quoted
    0

    Default Re: Possible strobe bulk buy

    When I kill one, I sure will be opening up the case to see what's inside.

    Even if it had a 555 or something, I only pre-power for approx half a second or so, just before I want them to fire. So its not like running them at reduced power for hours on end. And if I should loose a few, heck, it's only 3.50 a pop compared to the guarranted loses of the CLS ones at 6 dollars each.

    I did order some of the new CDI Xenon strobes this year on the pre-sale, I thiink this is the first time that CDI has ever stocked a Xenon strobe. Can't wait to give them a good field test.

    But overall, so far I've been very happy with the CDI LED strobes
    John (The Mascot)
    www.tennholidays.com

    480 LOR Channels + 2 CCR + 8 Mighty Minis + 10 Rainbow Floods+ 1 vdrive and vflood, Lynx Express and over 40,000 LEDs

  6. #21
    wbottomley
    Visitor wbottomley's Avatar

    Default Re: Possible strobe bulk buy

    I have a dead CDI LED strobe. Let me bring it to the TASL meeting for Al to look at.

  7. #22
    This space for rent. Al in Raleigh's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Raleigh, NC
    Posts
    3,531
    Thanks (Received)
    0
    Likes (Received)
    174
    Mentioned
    36
    Tagged
    0 Thread(s)
    Quoted
    73

    Default Re: Possible strobe bulk buy

    Talk dirty to me William.

  8. #23
    Trying to behave here-NOT John's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Chattanooga, TN
    Posts
    1,940
    Thanks (Received)
    0
    Likes (Received)
    24
    Mentioned
    1
    Tagged
    0 Thread(s)
    Quoted
    0

    Default Re: Possible strobe bulk buy

    Quote Originally Posted by wbottomley View Post
    I have a dead CDI LED strobe. Let me bring it to the TASL meeting for Al to look at.
    Did you throw stones at it to kill it like you did to those two poor old birds?

    Al, do an autopsy on that puppy and report on the cause of death!
    John (The Mascot)
    www.tennholidays.com

    480 LOR Channels + 2 CCR + 8 Mighty Minis + 10 Rainbow Floods+ 1 vdrive and vflood, Lynx Express and over 40,000 LEDs

  9. #24
    wbottomley
    Visitor wbottomley's Avatar

    Default Re: Possible strobe bulk buy

    The hussy was dead from the start!

    Now, I'll turn it over to the strobe examiner for an electropsy (is that a word) report.

  10. #25
    This space for rent. Al in Raleigh's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Raleigh, NC
    Posts
    3,531
    Thanks (Received)
    0
    Likes (Received)
    174
    Mentioned
    36
    Tagged
    0 Thread(s)
    Quoted
    73

    Default Re: Possible strobe bulk buy

    Oh, I am giddy as a school girl.

  11. #26
    Registered User mschell's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Lexington, NC
    Posts
    1,165
    Thanks (Received)
    0
    Likes (Received)
    40
    Mentioned
    24
    Tagged
    0 Thread(s)
    Quoted
    79

    Default Re: Possible strobe bulk buy

    Quote Originally Posted by Al in Raleigh View Post
    Oh, I am giddy as a school girl.
    Gee, can we open it up at the meeting....? Can we, please? I promise not to touch, just watch!

    (we are a crazy bunch!)
    Mark

    New location - new display. Looking forward to 2015 season!

  12. #27
    This space for rent. Al in Raleigh's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Raleigh, NC
    Posts
    3,531
    Thanks (Received)
    0
    Likes (Received)
    174
    Mentioned
    36
    Tagged
    0 Thread(s)
    Quoted
    73

    Default Re: Possible strobe bulk buy

    William gave me the broken strobe today. Thank you William. Walter took it out to the parking lot and used pliers on it and the top screwed off nicely. Preliminary autopsy results are that an IC chip is present. I briefly examined the chip and suspect it to be a timer chip probably in the 555 family but am not sure because no markings are on the chip. It will require reverse engineering to determine the actual chip and will take time. If I was on a game show that I had to decide immediately if the chip would be harmed by undervoltage, I would likely say no at this point. This is mostly an analog chip. I will try to map out the circuit in the next few days and give you my outhouse opinion.

    On the bottom of the strobe it is stamped "IP44". If that means it meets the IP44 standard, I am impressed. That means it will take everything short of being submersed in water. I am pleasantly surprised and impressed that the manufacturer went after that rating. Overall, I am impressed. The screw contacts in the base of the strobe are potted. That means they poured a liquid resin into it to keep out water and give it structural integrity. CLS strobes break too often at that mechanical connector. Too often. Potting gives it strength. One wire from the control board to the LED board was almost broken with only 1 strand holding it together. That is not a good thing to see but not of significance since the boards and wiring were held in place rigidly with some type of epoxy.

    I will post photos in the next few days.

  13. #28
    Registered User mschell's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Lexington, NC
    Posts
    1,165
    Thanks (Received)
    0
    Likes (Received)
    40
    Mentioned
    24
    Tagged
    0 Thread(s)
    Quoted
    79

    Default Re: Possible strobe bulk buy

    I would expect that "undervoltage" wouldn't do much harm, but could cause the unit to act erratically, which is exactly what you want a strobe to do - fire randomly.

    But the real question is long term behavior - which, depending on how often you run the show, how often you send low voltage to the chip, and how often you ask it to "fire", could be a single season or several seasons.

    I look forward to hearing Al's "post mortem" autopsy on this unit.

    This is a CDI strobe. I purchased the C7 version of this strobe last year on the pre-sale. Didn't use them this past season.
    Mark

    New location - new display. Looking forward to 2015 season!

  14. #29
    Trying to behave here-NOT John's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Chattanooga, TN
    Posts
    1,940
    Thanks (Received)
    0
    Likes (Received)
    24
    Mentioned
    1
    Tagged
    0 Thread(s)
    Quoted
    0

    Default Re: Possible strobe bulk buy

    I agree with your preliminary thoughts Mark.

    That's why I only "precharge" them about a half second before they fire.

    Long term "health", heck I don't really care since they only cost 3.50 each. The CLS strobes will die if you look at them crosseyed.

    So far I used them for 4th July, Halloween and Christmas with no losses. viva CDI !!!! for a great strobe!
    John (The Mascot)
    www.tennholidays.com

    480 LOR Channels + 2 CCR + 8 Mighty Minis + 10 Rainbow Floods+ 1 vdrive and vflood, Lynx Express and over 40,000 LEDs

  15. #30
    This space for rent. Al in Raleigh's Avatar
    Status
    Offline
    Join Date
    Jun 2009
    Location
    Raleigh, NC
    Posts
    3,531
    Thanks (Received)
    0
    Likes (Received)
    174
    Mentioned
    36
    Tagged
    0 Thread(s)
    Quoted
    73

    Default Re: Possible strobe bulk buy

    I agree with Mark too. I have seen instances where short duration, low voltage spikes doing damage by forcing current levels to spike short them. However, it was rare and usually involved EEPROMs. FPGAs, and ICs that set some parameter based upon a lowered voltage. We might be able to achieve a fix to the strobes that make them random out of the gate. Please be patient on the results. My business is beating me up at this moment.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •