Yes, most get higher readings are 15-20m.
If you do not then that is usually a sign that there is too much particulate in the air, be it humidity, dirt, dust, pollen ect.
Yes, most get higher readings are 15-20m.
If you do not then that is usually a sign that there is too much particulate in the air, be it humidity, dirt, dust, pollen ect.
AlexGT: Texas_Ace: AlexGT: LEDtec:I would like to mod my GT with an XHP70.2, someone can kindly tell me which resistor to replace on the original driver, and possibly which value to use?
Thanks.I purchased a R047 from here:
10Pcs 2512 SMD Alloy Resistor R010 -R091 0.01R ~0.091R 0.05R 0.33R R020 1W 1% | eBay
That resistor while technically ok is only rated for 1W. The resistor needs to be rated for 3W for long term reliability.
I have yet to find a reasonably priced 3w .047ohm resistor myself, so I just recommend the .050 and .040 now.
Thanks for the clarification TA, I just noticed it! The cheapest I found was $20 for 100 pieces… Will this one work?
Driving a XHP70 with just a 0.047 Ohm resistor will be disappointing at 6V
This would result in 5A
Also switching frequency would not be ideal, the diode would be quite close to its limitI changed the Inductor, MOSFET, capacitors and diode with better parts for higher currents also the switching frequency will be set to a point where the drivers efficiency gets optimal
Also reducing the current sense resistor and lowering the current control voltage divider helps reducing heatI should get next week the 20-40A synchronous Buck driver boards that I developed for CFT-90 and going to assemble and test the first prototype
I was thinking in driving the XHP-70.2 LED at 12v not 6v, but I have decided to wait until a better driver is available…
Speaking of said better driver. I have the parts incoming to test the prototype XHP70.2 TA driver for the GT next week if all goes well.
First in line when you start selling…
Also getting a prototype XHP70.2 mcpcb to test as well. :sunglasses:
Really pressing for them to make these for modders.
Also getting a prototype XHP70.2 mcpcb to test as well. :sunglasses:
Really pressing for them to make these for modders.
Thanks Ta , this is awesome !
Lux reading at 7 meter throwing distance for BLF GT.
1.163Mcd which give a throwing distance of 2157 meters.
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Measured at 20 meters. 1.153Mcd
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Thrunite TN42.
Measured at 10 meter 701Kcd
TN42 should be doing 750-800.
I would recommend investing in a real luxmeter.
TN42 should be doing 750-800.
I would recommend investing in a real luxmeter.
NO 750Kcd to 800Kcd is much much too high for a non mod TN42.
TN42 should be doing 750-800.
I would recommend investing in a real luxmeter.
Where did you get that from? Highest number I’ve seen is 728… The rest hover around 700.
NO 750Kcd to 800Kcd is much much too high for a non mod TN42.
You’re right, my bad, it’s 700-750.
TN42 should be doing 750-800.
I would recommend investing in a real luxmeter.
Any suggestions?
Enderman:TN42 should be doing 750-800.
I would recommend investing in a real luxmeter.NO 750Kcd to 800Kcd is much much too high for a non mod TN42.
I see 720Kcd from my TN42.
Any suggestions?
Read above, but the LX1330B is the best budget luxmeter.
Theodore41:Any suggestions?
Read above, but the LX1330B is the best budget luxmeter.
OK,I’ve got it right now from Amazon.de.
Why do you say the others aren’t real.
Do you have a reason to believe they are different?
Dr. Meter released the LX1330B , and later the other no-name LX1330B appeared . I don’t know if the internal components and it’s calibration are the same or not .
The one that TLF tested and found good was actually no-name:
Hallo zusammen, vor kurzem habe ich einen Vergleich von diversen Luxmetern duchgeführt. Hier die Ergebnisse, Bilder und der Ablauf: Aufbau: Auf der Wand wurde ein Stück Karton befestigt, darauf ein Kreuz gemalt, welches genau in der Waage...
The first test of the XHP70.2 driver for the GT went well tonight. We just need to figure out how to bypass the carrier button top springs.
Some tweaking is needed but at least it works. More will come as I have time.