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  1. guod

    the HLG-600H thread

    your LIMITS shifting the curve to 2Amps for the different Vfs," roughly" current for the fix Voltage and different leds are now 1770mA; 2000mA; and 2300mA , for a fix temperatur.
  2. guod

    the HLG-600H thread

    a variation of +/- 5% or 10% on Vf will change the current between 1100mA to 3200mA... a variation of just 1% will change the current at about 200mA have a nice day... in your parallel world
  3. guod

    DiY LEDs - How to Power Them

    Thermoelectric junctions are about 4 times less efficient in refrigeration applications than conventional means (they offer around 10–15% efficiency of the ideal Carnot cyclerefrigerator, compared with 40–60% achieved by conventional compression cycle systems (reverseRankine systems using...
  4. guod

    Mini Gorilla Tent Grow Club

    on reset all ports have an initial value of null, corresponding to high impedance input. this can also be seen as an open switch. you need a pull down resistor (4.7k to 10k) to give a off signal for the LDDs on reset. BTW. Analog dimming with the LDDs
  5. guod

    Cutter Electronics: Complete DIY COB kits

    this changes only the viewing range,,, limits are set by the COB -/- LED and there are some reasons not to use lower currents than the given Limit.
  6. guod

    Testing Timber's prototype=4000k/660nm and my finger on the flower trigger:)

    Paint it Black(Tape?) & do your Math https://www.led-tech.de/en/High-Power-LEDs-Osram/Osram-Modules/OSRAM-Oslon-SSL-80-hyper-red-array-LT-2017_206_209.html
  7. guod

    Cutter Electronics: Complete DIY COB kits

    just an old prototyp. Leds and Fans running from the same remote Driver other work can be seen in my Thread.
  8. guod

    Cutter Electronics: Complete DIY COB kits

    I would kick all this idiots out!
  9. guod

    LED Companies w/ LINKS

    Ok, if you are not familiar with this values then there is a problem table is sorted by Luminous Flux
  10. guod

    The end of LED is nigh. Incandescent will rise again.

    this picture shows the radiation above the atmosphere it´s just a bit different on earth
  11. guod

    LED Companies w/ LINKS

    one of the best sites 3 clicks and you have all warm white COBs; for example and than the info... what are you want more
  12. guod

    DIY LED controller

    this is similar to that what meanwell does for 3in 1 dimming, filtering the PWM signal. https://arduino-info.wikispaces.com/Analog-Output
  13. guod

    DIY LED controller

    BASICs Dimming LEDs via PWM and CCR http://www.lutron.com/TechnicalDocumentLibrary/048360a_PWM_vs_CCR_LED_App_Note.pdf Color-shift PC White = phosphor coated LED = COB the white point for PWM dimming is constant. for analog dimming the white point changes but only at extrem values it will...
  14. guod

    Mini Gorilla Tent Grow Club

    more like this... scnr
  15. guod

    DIY LED controller

    i have to correct myself... there are some 3in1 dimmable driver from meanwell with PWM style output. The PWM XXX constant völtage drivers.
  16. guod

    DIY LED controller

    just to say, the 3in1 dimmable driver from Meanwell don´t pulse the output current . you have to use the LDD-Drivers for this.
  17. guod

    Mini Gorilla Tent Grow Club

    the Catch- or Flyback-diode eliminates the Voltage Spike from an inductor (relais-coil or Motor). this Spike is high enough to kill the Transistor. "The rapid collapse of the magnetic field as the switch opens can cause very large voltage spikes, because the amount of voltage induced is...
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