/diy/ - Do It Yourself

>>2035483
to optimize for lumens per watt, look at what the dude lmao growers are using. about a year or two ago, the hotness was the Samsung LM301B, a 1/5W white emitter that delivers up to 220lm/W. emitters just over half as efficient are commonly and cheaply available. if you use those, you'll need to think more about assembly and heat sinking, like metal-core pc boards and reflow ovens and so on
here's a first-result-in-the-search alibay seller that sells chip-on-board modules in a variety of configurations, ready for you to add a driver and an enclosure and whatever thermal management you feel like adding https://sumbulbs01.aliexpress.com/store/group/LED-COB-light-source/5796097_517293722.html

>>2035513
>configure the RC to a specific frequency and thats what you get out the other side
did you turn on the spectrum view? did you try different waveforms? did you even look at the amplitudes? you are not done with the RC lab yet and it is too early to draw conclusions
if nothing else, understand that any function f(x) of period 2*pi can be expressed as the sum of a[n]*sin(n*x+b[n]) for integers n≥1, or intuitively, that any periodic wave can be composed by or decomposed into a fundamental and its harmonics, each of its particular amplitude and phase offset. it's not possible to understand ac circuit analysis without it
low-pass filters pass low frequencies from input to output, high-pass filters pass high frequencies, band-pass filters pass a band of frequencies. what does "pass" mean at the output? usually, the majority of the signal, but maybe you want more or less than that. how much of any particular frequency of interest goes from input to output? enter the math