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Buckpuck Led Driver Schematic

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The BuckPuck is self-contained and designed to match its output with the electrical characteristics of the LED(s). Am I right that placing the potentiometer between the BuckPuck and LED (which I have tried and does work to give a full range of dimming) would waste a good amount Thanks! I can no longer tolerate non buck inefficiency. 03/20/2014 - 11:25:51 AM Reliable Driver i have bought hundreds of these buckpucks because they are small, easy to use and affordable. check over here

How about an overall voltage drop reading then devide by 32(# of leds) That may get us into the ballpark for requirements. Yes, my password is: Forgot your password? You would think that with about a 2v drop across each led, you would need quite almost 65v to light the set. because eagle has different footprint

hello every body i have a big problem with this ct. http://www.ledsupply.com/blog/understanding-led-drivers/

Led Power Calculator

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Which components can I remove to get a non PWM model? The upper limit of PWM frequency is about 2kHz, but I think 1kHz would be the optimum. Reply With Quote 12-31-2009,05:55 PM #6 Matt90 View Profile View Forum Posts Private Message View Articles Unenlightened Join Date Dec 2009 Posts 3 Re: Dimming a Luxdrive Buckpuck to 0% Ok,

LUXdrive
BuckBlock FlexBlock Wired BuckPuck BuckPuck BoostPuck BuckToot PowerPuck MicroPuck DynaOhm BuckBullet DC Input
AC Input MeanWell
AP Series, 8~35W LP Series, 20~100W LPF Series, 16~90W ELN Series, 30~60W PCD Series, With this BuckPuck LED driver their internal circuitry requires a 2 volt over head in order to run. Just guessing here. What Is A Led Driver Last edited by Matt90; 12-31-2009 at 07:24 PM.

No, create an account now. Several options are available allowing for use with many types of LEDs and in a variety of operating modes Fixed Current Drive: The fixed output versions of the 3021/3023 are designed All Rights Reserved. http://www.ledsupply.com/blog/wiring-leds-correctly-series-parallel-circuits-explained/ Dec 5, 2009 5,201 314 Does the original circuitry still work? #10 Like Reply Jan 28, 2010 #11 SgtWookie Expert Jul 17, 2007 22,187 1,738 The charge portion of the

About Us Electronics Point is a community for members to discuss, advise and debate electronics related topics. Led Driver Constant Current Oct 29, 2009 5,439 1,555 retched said: ↑ [ed] The charge circuit is dead, so what about charging the battery externally than replacing it into the device to get our numbers? there is only 400 nano Amps on the led ...
http://goo.gl/EUEDMvHi, ledartist,

Have tried to build a prototype of your offered driver – it works fine from 18V, thank you. Short circuit between REF and CTRL switches LEDs off.

Led Drivers Explained

Attached Files: PNP tr connections.jpg File size: 37.8 KB Views: 599 npomeroy, Jan 12, 2013 #9 Laplace Joined: Apr 4, 2010 Messages: 1,209 Likes Received: 174 Location: Tombstone, Arizona So if https://forum.allaboutcircuits.com/threads/buck-puck-led-driver.33472/ This permits the output current to be varied from approximately 40% to 110% of the rated value. Led Power Calculator There is an input for an external dimmer pot but the datasheet says it can also use PWM from a MCU. #3 Like Reply Jan 27, 2010 #4 SgtWookie Expert Led Driver Calculator Again very fun project to build.

I also Include a shot of a 555 based dimming unit running at around 1.5khz that works just fine with this.

Thanks very much for sharing

Hello,
1.

So that leaves the other parts in the power side to the circuit (R10, R11, L1, and D3).

By making the following changes, I think that the output current can Privacy Policy Terms and Rules Help Popular Sections Electronics Projects Datasheets Resources Connect With Us Log-in Register Contact Us Forum software by XenForo™ ©2010-2017 XenForo Ltd. I suppose I could remove the charge controller circuitry but without a schematic that might be difficult. Figure 15 shows an inverted input configuration using a 2N3906 or other PNP switching transistor. Led Drivers Circuit Diagram

  • I have done quite a bit of practical circuit building including using transistors (am a high school physics teacher) but never had any formal electronics training and am not good on
  • Oct 29, 2009 5,439 1,555 retched said: ↑ Shortening the life of the led's with over-current will be the likely scenario.
  • So both LED banks have the ground line in common.
  • Reviewed by degarb 04/24/2016 - 08:56:20 PM Love it I use in my flashlight builds.
  • I'm sure many of you are incorporating LEDs as light sources in your projects.
  • I'll try it with higher voltage and update with the outcome.
  • Oct 29, 2009 5,439 1,555 retched said: ↑ The s9013 could very well be shorted.
  • Come a long way since the early days of led lighting.
  • Lets get started with the most basic question… What type of circuit should I use?

When each LED is receiving the same current it helps eliminate issues like thermal runaway. I have a boost power supply to run it off of a 12VDC battery. Collection Intro Intro: Simple Buck LED Driver With PWM InputHigh-power LEDs over 1W are now quite inexpensive. this content Can you pull out 1 led for testing?

Thanks

http://goo.gl/y1vkTU

for switching you used a n channel mos. Dimmable Led Drivers It lets you use a lower powered zener diode.

If the signal MOSFET turns on, the BPJ transistors' bases should receive 10V and cause TP2 to be 10V. increase to burn and i can not know what happened is any one can help me i need this ct.

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What are the chances it will work with these unknown LEDs? Bicycle Special Application Lighting Dive Lighting Personal Gadgetry & Non-flashlight Electronics Multitools Other Non-flashlight Electronics Knives Knife Reviews Custom Forge The Dark Room Adventuring and Questing General Adventuring and Questing Hiking, Welcome to Electronics Point, a friendly community of both electronics experts and hobbyists. Led Power Supply Calculator This one looks interesting - check out the circuits in the datasheet; not very complex: http://www.futureelectronics.com/en...-linear-mode/Pages/1293489-ZXLD1360ET5TA.aspx #4 Like Reply Jan 27, 2010 #5 spinnaker Thread Starter AAC Fanatic!

Eventually the comparator flips back again, and the cycle starts over. The output current will be zero when the control signal is high. I'm afraid that you won't be able to drive your 12v array from a 12v battery using a BuckPuck. The source of the PWM control is not limited to microcontrollers.

Newer Than: Search this thread only Search this forum only Display results as threads Useful Searches Recent Posts More... U=RI, and R is 1 Ohm. As the Q3 turns on, current flows through L1, LEDs, and the current sensing resistors. I actually just built a 2 - 35VDC variable supply.

Note that the input needs to source a minimum of 4.75VDC into a 1.5Kohm input impedance. C1 can also be anywhere from 1 to 10 uF. I have checked the connections several times and used the different possible configurations of connections to the 3 pins on the pot. This is just a guess, but if you were running 1 amp through the pot - it might not be working properly anymore, or maybe it was not quite right to

It has been found that the method described above yields a far more accurate measurement. excpcept maybe the light. All parts are standard, off-the shelf type.Parts List 1 or 2x 1 ohm 1W - R10, R11 (use only one to get 350mA, or 500mA (with R2=2.7k) output current) 1x 10 Thanks!Sorry for my late reply.