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...... :rolleyes: The world is so ... Funny thing ,my dear brother ... I'm having some red wine ... Actually about a liter of the finest red wines around .. Please,let us enjoy .. Our red wine ..... And our ideas... Of course ,myself I'm most interested for yours. :hump: .. Yes,you;re...

Here's a pic for size comparison .. A single driver LM29017N-8 fan fail protection pcb. ( with built in +12VDC remote trigger output ,for powering a "turn on delay" circuit for a second LED driver ) Besides an Arduino UNO board ... ( Usually I use 1206 SMD resistors & caps as also SMD diodes...

Well, all the three ICs explored at this thread ,more or less ,do the same job ... They operate as speed switches ... Making a "market research " will reveal ,which IC of them you can obtain easily and with a low price ... Of course SO-8 and SOT-23 are tiny chips (at least compared to DIP-8...

Talking about ridiculous mistakes ..I'm an idiot ... The schematic above could work ,if the relay was a double throw ... At normally closed state the LED drivers are switched ON ... When Alert output goes LOW ,then the transistor will energize the relay and the LED drivers will switch OFF . (...

Ok ,since you're interested with that kind of low voltage ICs for fan protection ,here's another one : http://ww1.microchip.com/downloads/en/DeviceDoc/21688c.pdf " The TC670 is an integrated fan speed sensor that predicts and/or detects fan failure, preventing thermal damage to systems with...

I 've no reason not to trust you.. It is already " listed"... https://popculture.knoji.com/most-putrid-smell-of-foods-12-smelliest-foods-in-the-world/ But Limburger is also in the list of most smelly "goodies" ... http://www.openjourney.com/article/18-stinky-foods-around-the-world-41.html...

" Bonjour Are you sure it is not some kind of cheese,cause even if I hate cheese(unbelievable for a French!isn't it!?)I recognized it...It is just too old and turn grey...bon appetit! Have a great day " Ha .... You think ,you frenchmen ,that you know better of stinky cheeses ? WRONG ! A...

Law #1 of Electronics: R T F M Cheers. :bigjoint:

....DipTrace .... It has 4-sub-programs ,in fact ... "Schematic Capture " used to draw schematics . (DipTrace then ,can automatically "transform" them into PCBs .Never used that feature. Designing a pcb from scratch is pure fan .) "PCB Layout" used to make the pcbs . (DipTrace then ,can...

Oh and another important note ,regarding the schematics posted here... When you see the "ground " symbol ( an arrow made of 3 lines ,GND ) is not the MAINS EARTH . It is the "minus" side of the 12 VDc fan power supply unit . In fact you do not want the earth from mains to short / contact with...

Easier to use than the LM2907 / LM2917 ,but yes ... 6 volt max Vcc .... Probably it better "fits" to a motherboard ,rather to a LED grow light ..:sad: About the one driver + 3 fans combo .... The schematic can be like that ..( ido not see any problem why it shouldn't work ... But the trained...

0.06 for the version 2 (new one ) 0.26 for the version 1.2 ( old one )

Yes,quite good solution... As long as you'll find the IC already soldered to the adaptor .. Thanx ,Salm

Another interesting option of "fan fail" protection Intergrated Circuit chip is this : http://datasheets.maximintegrated.com/en/ds/MAX6684.pdf Although ,comin' only in a SO-8 package (tiny chip ) ,will make the soldering a bit of PITA .... Still ,is an interesting option ,as it works with...

Oh! Do not think for a moment that myself ,I'm better than you in electronics. I know only some basic stuff ,which are quite easy to learn with a bit of web-studying ... Thank Guod ,that I had a great inspirator ! I hope that he chimes into all these ... You see ,is not uncommon for me ,making...

You mean 3x fans and only one driver in the system ? Aka 3 fans fail protection for a single driver ? (Any of the fans fail ,driver switches OFF ) If so yes ... It can be done ...You will need a single relay ,but still 3x LM2907N-8 ICs and their external components ... you will have to connect...

Later when I 'll get back home .... I'm out for havin' some fun ,right now...

One thing to note : There's a 510K resistor in the fan fail circuit . ( one end is connected between the two 5K1 resistors ,which form a 50%-50% voltage divider and the other end of the 510K resistor is connected to the collector (pin #5 of LM2907N-8 ) of the "floating NPN transistor " inside...

-You will need piece of an old (expired of course ) credit card ... -....or -better yet- an old-fashioned razor ..(be careful though, with that kind of " tool " ...) -Apply several small to tiny blobs of paste all over the thermal pad of the COB . - Spread the blobs with the piece of the...

The most important aspect regarding TIM ( thermal paste ) is the contact pressure , between the two surfaces that the TIM is "sandwiched" into . AN30 of Bridgelux ( " Thermal Management for Bridgelux Vero Series LED Arrays " ), provides enough information . (...) There are 3 resistances in...