"Generally, audio power supplies do not filter noise under 40 kHz, no?
You can put all the LRCs you want on a DC power supply and as many farads as you want. I will say that you will not find many supplies filtering under 20 Hz."
My goodness. Setting aside for a minute the absurd contention that injecting a low frequency AC harmonic that transmits through the supply is somehow helpful, from where comes the learning that a power supply cannot filter low frequencies? The first stage of the supply is a full wave rectifier - either a four diode bridge, or two diodes with a center-tapped transformer. The bridge does not care the frequency. When the voltage is positive relative to its bias, it conducts. When negative, it does not. It will rectify a 1 Hz sine wave just as happily as a 60 Hz sine wave. This is my last comment on this as the futility is obvious. P.T. Barnum was a smart man. If I were to spend money on Add-Powr, I would think it more beneficial to buy the company’s stock than its product.
You can put all the LRCs you want on a DC power supply and as many farads as you want. I will say that you will not find many supplies filtering under 20 Hz."
My goodness. Setting aside for a minute the absurd contention that injecting a low frequency AC harmonic that transmits through the supply is somehow helpful, from where comes the learning that a power supply cannot filter low frequencies? The first stage of the supply is a full wave rectifier - either a four diode bridge, or two diodes with a center-tapped transformer. The bridge does not care the frequency. When the voltage is positive relative to its bias, it conducts. When negative, it does not. It will rectify a 1 Hz sine wave just as happily as a 60 Hz sine wave. This is my last comment on this as the futility is obvious. P.T. Barnum was a smart man. If I were to spend money on Add-Powr, I would think it more beneficial to buy the company’s stock than its product.