9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
Re: LED light power supply board what do you think about it
I am going to hack two so they can run on battery power supply
Or at least that the plan for now
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
Re: LED light power supply board what do you think about it
Did you measure the Vf of the LED to see if they are 3V or 6V dual-LED?
Since the LEDs are connected in series then it will be easy to find out what the total Vf of the LED string is.
Re: LED light power supply board what do you think about it
I'm surprised you got a transformer... thought that newer cheap non-dimmable LEDs have no transformer, just effectively has a series pass IC regulator like a LM317 in CC mode... ?
It is tempting to get one to work with low voltage, but with the LEDs usually wired in series, rewiring the heatsink board for parallel sounds no fun...
I'm surprised you got a transformer... thought that newer cheap non-dimmable LEDs have no transformer, just effectively has a series pass IC regulator like a LM317 in CC mode... ?
It is tempting to get one to work with low voltage, but with the LEDs usually wired in series, rewiring the heatsink board for parallel sounds no fun...
watch your fingers, some of those led boards run 70-90v or even higher.
there are led's with 6 or more dies in series in them specially for mains lamps.
Re: LED light power supply board what do you think about it
UpDate
The voltage is 17 v@50 mill amps I check it while the LEDs were ON then power them use an adjustable power supply set 17 volts it was showing 50 millimeters
I going to get some voltage/current regulars from eBay very soon and set up the same reading or maybe a little bit lower than that
One note
I do not like the way that power board is set up for one thing I do not see a fuse on or I have not found one
I will use this power supply with some add on
A while back GoldMine Electronic had a sale on LEDs strip lights 20 pieces for $20.00
they do not run this sale very often when I look on there site the other day and they did not list them any more which means that they are out of right now
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
Re: LED light power supply board what do you think about it
It uses fusible resistor, the gray one right at the AC input feeding the bridge.
It does look like non-isolated buck converter, look up the IC next to the inductor.
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
It uses fusible resistor, the gray one right at the AC input feeding the bridge.
It does look like non-isolated buck converter, look up the IC next to the inductor.
I will look it up with a more powerful magafing glass than one I have in the shed I will post the part when i can read it
I saw the resistor but do not like that I want a real fuse and a fast acting fuse at that
I seen real **** happen when there are fuses in power supply’s I seen some damage when a power supply has a main fuse but it not bad from what I have seen
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
Re: LED light power supply board what do you think about it
Could you please explain how this could be
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *
These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%
1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board
All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
Re: LED light power supply board what do you think about it
FFS just get a fricking led driver, either boost (to power from 1-2 batteries) or a buck (step-down) to create 17v from some higher voltage like 18.5v (laptop adapter) or 24v (common and cheap power supply).
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