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#Post#: 2072--------------------------------------------------
formula for efficiency..
By: happygolucky Date: April 3, 2014, 12:11 pm
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when tuning any led light example 6 watt eco-smart?
i have a formula that says .500 amp
A=w/v
thus eco-smart bulb is 6watts/12v=.500amp's
question .if i tune a light to say .325 amp is that not under
driving bulb amp rating causing a coefficient rating under
driving the bulb causing less lux/lumenus but yet less stress an
current draw?
but adding more bulbs will increase amp draw an eventually bring
led into an 100% an over lumens ?lux reading? ( that why you
see a jump in brightness when increase bulbs/amps when you hit
peak amp draw bulb.. what is it peak how many bulbs can you run
...?
i have been tuning 1 bulb eco-smart bulb @ .325 amp's with out a
ferrite on 10 amp setting multimeter digital... less than the
.500 or 1/2 amp required for 6watt... is that good or bad for
the circuit to under drive it using less amps ..... talk about
efficiency.. i have to correct my self i have been referring to
M/A miliamps when indeed it was reading amp's
now i do have a 12v m/A setting on the meter is that what i
should use to get a real read on my circuit draw or stick to
the 10amp setting an protect the meter an transistor../bulb say
for other factory cfl's or LED's?
if the transistor is rated for 15 amp why do they blow not being
tuned an driving of the 15 amp thus the heating issue an
overdrive?
DC watts to amps calculation formula
The current I in amps (A) is equal to the power P in watts (W),
divided by the voltage V in volts (V):
I(A) = P(W) / V(V)
So amps are equal to watts divided by volts.
amp = watt / volt
or
A = W / V
Example
What is the current in amps when the power consumption is 330
watts and the voltage supply is 110 volts?
I = 330W / 110V = 3A
#Post#: 2073--------------------------------------------------
Re: formula for efficiency..
By: lynx wind Date: April 3, 2014, 12:38 pm
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Its Ok to under drive the LED bulbs. In effect you are running
it dim.
The reason the transistors blow is because you are applying too
high a voltage to the Base. The Base can only handle about a
3-4 volt signal. If you hook up a multimeter to the Base and
the emitter you can see the voltage. The LED should drop the
secondary and flyback down to 3.6 volts or so. If the bulb
can't use all the high voltage some of this hits the base and
will break down the thin layer in the transistor.
When designed properly the LED bulb(s) will drop the signal
voltage to the Base automatically. That is the simplicity of
this one transistor circuit.
#Post#: 2074--------------------------------------------------
Re: formula for efficiency..
By: happygolucky Date: April 3, 2014, 1:04 pm
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it seems that all i have to do is really just add to the
primary, an it drops the amp in 1/3rd... i took yours that you
sent back.... no dis-respect checked it with my meter...against
my own...circuits my amp meter read .985 amp.... so i added 5-6
turns to the primary an it dropped it to .325 eliminating the
need for the ferrite unless, i add more bulbs an want to
choke drop amps/voltage pretty cool
1)i remember you telling me to set it on my 12v 10amp setting to
protect the meter..
2)what is the 12v m/A setting is that true miliamp reading in
the 1000ths
then i ask find myself asking how much wire... do you really
need? for these simple circuits..
just enough to open the circuit an let it oscillate an drop the
voltage an close... an repeat? eventually less it may start
flickering or blinking?
pretty cool..that would produce a wave length ban right?
#Post#: 2075--------------------------------------------------
Re: formula for efficiency..
By: happygolucky Date: April 3, 2014, 1:08 pm
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the base is amplifying the voltage, correct more wingdings
allow a build up of more current/voltage
#Post#: 2076--------------------------------------------------
Re: formula for efficiency..
By: happygolucky Date: April 3, 2014, 1:27 pm
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so in summary these leds an cfls lights are like woman, an as
crazyguy said they have sweet spot...or so I can say a happy
median..you can tune them on the high or low side... but if you
go to far, you'll just piss'em off an they, blow there
circuit... sounds like my wife hahahaha! :D
what determines how much or how many watts/bulb you can push
threw this circuit...
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