blog.copcea.ro
Cristian – Cristian COPCEA
http://blog.copcea.ro/author/cristian
Noli, obsecro, istum disturbare. U5 Motorcycle LED Headlight Waterproof High Power Spot Light Review. So I buy a pair of these U5 Motorcycle LED Headlight Waterproof High Power Spot Light from the Internet, to mount it on my motorbike. Nice finish, light…hmmm…bright but not VERY, so i decide to take a look at the specs, again. Environment Temperature: -40—40 degree centigrade. OK 3000LM. Not quite what I saw when hitting the high beam. I start to disassemble the spot:. Is that the lux takes into account ...
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Posts – Cristian COPCEA
http://blog.copcea.ro/posts
Noli, obsecro, istum disturbare. Plimbare moto pe Transfagarasan 2016. U5 Motorcycle LED Headlight Waterproof High Power Spot Light Review. So I buy a pair of these U5 Motorcycle LED Headlight Waterproof High Power Spot Light from the Internet, to mount it on my motorbike. Nice finish, light…hmmm…bright but not VERY, so i decide to take a look at the specs, again. Environment Temperature: -40—40 degree centigrade. OK 3000LM. Not quite what I saw when hitting the high beam. I start to disassemble the spot:.
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Bec cu LED-uri LOHUIS – Cristian COPCEA
http://blog.copcea.ro/2012/09/23/bec-cu-led-uri-lohuis
Noli, obsecro, istum disturbare. Bec cu LED-uri LOHUIS. Recent am achizitionat pentru casa niste becuri cu 60 de LED-uri, marca LOHUIS. Din 7 becuri, 4 s-au ars in prima zi iar doua becuri au rezistat cca 1 saptamana. Un singur bec mai functiona dupa prima saptamana. Din acest motiv, m-am enervat si am purces la investigarea cauzei – si, eventual repararea becurilor. Schema electrica a driverului de curent continuu este urmatoarea:. Cablajul driverului pentru LED-uri este urmatorul (aproximativ):. Conden...
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Despre Mine – Cristian COPCEA
http://blog.copcea.ro/despre-mine
Noli, obsecro, istum disturbare. A propos de moi. M-am născut pe 20 iulie 1968 în București. Îmi plac animalele, florile, muzica, plimbările în natură, natația, motociclismul, tot ce este frumos. Îmi plac științele exacte, însă mă aventurez și în domenii umaniste precum medicina, muzică, drept și artă. I was born on July 20th, 1968 in Bucharest. I like animals, flowers, music, walks in the nature, swimming, motorbiking, everything beautiful. Je suis né le 20 juillet 1968 à Bucarest. A propos de moi.
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PCB exposure with UV Leds and digital countdown timer DIY – Cristian COPCEA
http://blog.copcea.ro/2014/06/23/pcb-exposure-with-uv-leds-and-digital-timer-diy
Noli, obsecro, istum disturbare. PCB exposure with UV Leds and digital countdown timer DIY. PCB exposure with UV Leds and digital countdown timer DIY. I have worked for years with a mercury-discharge bulb for exposing PCBs and it started lately to show symptoms of old age. I have decided to retire the old stuff and to replace it with a modern installation, using UV Leds and a digital timer. A PCB exposure with Ultraviolet LEDs. The idea is to make a LED matrix, powered at 12V from a regular adaptor.
blog.copcea.ro
Timer for Ultraviolet exposure with UV LEDs and PWM fine tuning – Cristian COPCEA
http://blog.copcea.ro/2014/06/30/timer-for-the-pcb-exposure-with-ultraviolet-leds-with-a-common-anode-7-segments-display-and-pwm
Noli, obsecro, istum disturbare. Timer for Ultraviolet exposure with UV LEDs and PWM fine tuning. Timer for Ultraviolet exposure with UV LEDs and PWM fine tuning. Had only on/off possibilities for the UV leds. Some projects need a finer tuning of the UV value, and I am not talking just about PCBs. Stamps and other things need ultraviolet curing, with setups that cannot be fulfilled using the basic, previous design. Based on the same hardware as the Common Cathode timer available in this post. The display...
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State Of The Art Single Layer or Double Layer DIY PCB Production with FR4 or aluminum substrate. – Cristian COPCEA
http://blog.copcea.ro/2014/06/22/state-of-the-art-single-layer-or-double-layer-home-pcb-production
Noli, obsecro, istum disturbare. State Of The Art Single Layer or Double Layer DIY PCB Production with FR4 or aluminum substrate. State Of The Art Single Layer or Double Layer DIY PCB Production. With FR4 or aluminum substrate. After many years of DIY electronic projects, I can share my experience about having state of the art electronic PCBs, time after time, with zero or at least minimal initial errors. If you like my tutorial, you know what to do. A presensitive PCBs or Positive-sprayed PCBs;. E FeCl3...
