NERD ALERT Pure Electronics Question
I want to use 78xx voltage regulators in my 36 volt lighting. To power integral with heatsink 1 watt fans. Clarification: I purchased new surplus PC obsolete heatsinks with ball bearing fans for less ...
Forum Discussion
BECAUSE (A necessary caveat)
The SHARP brand of chip has proven to be so dependable, I use a blanket power supply to cover several emitters in parallel. Zero current throttling.
The heatsinks with fans are new surplus units for Pentium CPU's. The emitters stay close to ambient temp. I can therefore drive them harder than any LED driver ever thought of. And their p/n junction stays cooler. Say 85 watts worth of driver eqvt light. And years doing this has proven the concept. No failures.
A 350 watt Meanwell 36-volt unit provides six chip potential. The Meanwell has proven to be far more reliable than any current limiter I have tried. "Better" grade 50 watt drivers are pricey when cumulatively aggregated.
Compromises incorporated. With network power distribution I lose easy individual lamp switching. And easier installation.
But I always have a nagging feeling that a current limiter exists that would serve adequately at a really good price. $x6 versus one Meanwell. I just do not have the financial ability to try a flood of different drivers to proof out the cream of the crop. The lumen output difference between adjustable ma control and set driver control is to me, a real eyebrow raiser. OEM "thriftiness" in heat sink cost may be the clue for this phenomenon. Keep in mind my record of no emitter or fan failures.
The SHARP brand of chip has proven to be so dependable, I use a blanket power supply to cover several emitters in parallel. Zero current throttling.
The heatsinks with fans are new surplus units for Pentium CPU's. The emitters stay close to ambient temp. I can therefore drive them harder than any LED driver ever thought of. And their p/n junction stays cooler. Say 85 watts worth of driver eqvt light. And years doing this has proven the concept. No failures.
A 350 watt Meanwell 36-volt unit provides six chip potential. The Meanwell has proven to be far more reliable than any current limiter I have tried. "Better" grade 50 watt drivers are pricey when cumulatively aggregated.
Compromises incorporated. With network power distribution I lose easy individual lamp switching. And easier installation.
But I always have a nagging feeling that a current limiter exists that would serve adequately at a really good price. $x6 versus one Meanwell. I just do not have the financial ability to try a flood of different drivers to proof out the cream of the crop. The lumen output difference between adjustable ma control and set driver control is to me, a real eyebrow raiser. OEM "thriftiness" in heat sink cost may be the clue for this phenomenon. Keep in mind my record of no emitter or fan failures.
