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  1. rhd

    List of Diodes

    This is remarkable. Are there readily affordable sources for the 488s now? Checked DTRs site and it doesn't look like he has them. Wow, reps are astronomically huge these days.
  2. rhd

    Head scratcher - can I make this circuit from relays, diodes and switches only?

    That is very sharp. It took me a couple minutes just to figure it out (I didn't catch on to the fact that those were NC end stops at first). I do need to figure out a way to avoid the short, because it's possible that the circuit could be triggered when the mechanism has slacked somewhat and...
  3. rhd

    Head scratcher - can I make this circuit from relays, diodes and switches only?

    It is a DC motor I'll be using. I've been able to figure out how to make a setup where the two NC momentary buttons would serve as "stops" using Cyparagon's approach. Separately, I've been able to figure out how to make a circuit that reverses polarity when endstops are pressed. Where I've hit...
  4. rhd

    Head scratcher - can I make this circuit from relays, diodes and switches only?

    I've been scratching my head on this one for a bit, and thought I would see if any of the bright minds on here had any ideas. I want to design a circuit using a battery, a motor, 3 momentary switches and any number of relays and current rectifying diodes required. - Pressing switch "trigger"...
  5. rhd

    FS: CNI 40-45mW Custom 589nm Yellow

    Apparently one thing that has changed is that my email now filters topic reply notifications - I was starting to think there was just no activity on this thread! Thanks all for the kind words. Down: It was made custom to have no startup delay tailcap key lock or tailcap interlock plug that...
  6. rhd

    FS: CNI 40-45mW Custom 589nm Yellow

    For sale is a CNI 589nm laser made custom for me several years back. Discussed in a thread elsewhere on LPF when purchased. Very little used notwithstanding that it's probably around 5 years old now. Still looks beautiful. The power tends to hover between 40 and 45mW (see video here for a ~1...
  7. rhd

    488nm Direct Diode 20mW CNI-PGL-III-C Custom Build

    I kind of love the fact that you're bugging him to reveal where he got the host :)
  8. rhd

    FS: Spectra Diode Labs SDL-3450 Fiber Coupled Laser 10W 808nm JDS Uniphase JDSU

    Lowered again. $50 shipped North America
  9. rhd

    8 channel 40 Amp buck for NUBs

    Further evidence of that is the fact that the datasheet itself puts all 8 in series and refers to the array as an "LD Bank" with an operating voltage of 30 to 39V.
  10. rhd

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please Just the one array? IE, 7 diodes total? Nothing else interesting?
  11. rhd

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please What's inside this projector?
  12. rhd

    8 channel 40 Amp buck for NUBs

    What he said ^ Slightly longer explanation of rationale: 1) Parallel is too dangerous for an array, it would have to be series. I want to power from a high current 7.4V Lipo, so that would require a boost. I don't have any boost designs sitting around in Eagle that can boost to ~44V @ 5A, and...
  13. rhd

    8 channel 40 Amp buck for NUBs

    With separable tactile triggered MOSFET switch / power distribution daughter board.
  14. rhd

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please Back up this statement. What are you basing the claim that "9w diodes are out" on? I don't see them at the link you provided. You sent us a link to an eBay listing that is 36W / 8 = 4.5W Might want to read...
  15. rhd

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please Nothing new that I know of. I just haven't used my array. I'd actually sell it for $450 + actual shipping costs.
  16. rhd

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please I'll sell mine for $500 if anyone is interested.
  17. rhd

    FS: Spectra Diode Labs SDL-3450 Fiber Coupled Laser 10W 808nm JDS Uniphase JDSU

    Lowered to $60 plus shipping. Just looking for a good home for this really.
  18. rhd

    FS: Spectra Diode Labs SDL-3450 Fiber Coupled Laser 10W 808nm JDS Uniphase JDSU

    I believe so. There's no spec or data sheet, but that looks familiar (I think those are the specs I found when googling).




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