... as already mentioned above; before you plug in your fresh diode make sure you short out the driver.
The capacitor on the board will blow the arse out of the diode if the driver has been previously powered with an open circuit diode.
... as already mentioned above; before you plug in your fresh diode make sure you short out the driver.
The capacitor on the board will blow the arse out of the diode if the driver has been previously powered with an open circuit diode.
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This 'could' be the problem, although i can't rightly remember the order of events now.... as already mentioned above; before you plug in your fresh diode make sure you short out the driver.
The capacitor on the board will blow the arse out of the diode if the driver has been previously powered with an open circuit diode.
That said, I can't remember actually running the driver without anything attached as I wasn't sure if this would damage it - it always had a diode or a meter attached.
Even if you didn't power it, capacitors can and do just obtain a charge (unless they are shorted with a bleeder resistor).
http://www.zpenergy.com/modules.php?...ticle&sid=2230
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Could not agree more!
I have killed many diodes this way, nice working laser, pulled the main plug, put the laser back on power and death diode
Since I switch off the 5V with the interlock instead of the mains I never had a problem with killed diodes.
Diodes are pretty rugged, twice I dropped a open can on the floor and they still work fine. Last week we tested a quad setup and during harvesting we havily damged the can, the diode was suprisingly enough still working fine.
A friend of mine killed a few diodes during soldering, but when he showed me how he did it I was not supprised. he used a cold soldering iron and he was baking the pins for 10-20 seconds yes this will kill the diode. But have soldered many diodes and never killed one during soldering.
I have tried similar diode sockets from Roithner, (another highly respected supplier of course), and have had diodes fail for the very reasons mentioned above. Took a couple to realise what was happening... Slight movement; disconnection; capacitor charges; reconnection; capacitor discharges; diode goes poof! All so quick it looks like the diode just stops lasing. I will never, ever use them again.
M
there is also another way to fry them
soldering them with a line-connected iron when your line is full of transients
my parents house was located next to a cement plant, not to mention it also was 5 meters away from the distribution transformer
the line was so full of shit we could see transients in lamps brightness!
since then I have moved to another location and live on my own, and no more transient problems
soldering with a noisy line and bad earthing of your network may do the same as striking a tesla coil at your diode
what I did to solve this problem was heating the iron on line, then disconnect it to solder the diode, and never had any failure
Well it turns out it IS actually quite hard to kill them! Now working fine after I checked it out a bit better and noticed that all the solder residue left on the pins was really dull. I cleaned and re-tinned the pins and they went noticeably further home on the diode socket this time - powered up - we have coherent light!
Now I just wish the postman would bring my mini mounts from Pat and the world will be a happier place.
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.