![]() Not sure how else I could measure current if I don't do it this way but then the noise overwhelms. Is there any way to ignore or cancel out this nduced voltage while measuring current via a shunt resistor ? One end of the probe is attached to one side of the resistor and the probe ground to another side of the resistor, so essentially this is a floating ground, which could be adding to the noise. Instead of showing Vpeak-to-peak or Vamplitute correctly, I am seeing Vpp/Va values that fluctuate all over the place, because of this induced +/- 20mA, and the corresponding added current noise (100uA). There is also a ground connection at the shields of the device’s various audio connections. One way this can happen: The metal chassis of a piece of gear is normally grounded to the device’s AC plug. ![]() You wont get rid of it completely, but you will be able to reduce it to some extent. But hum and buzz can be removed more or less successfully after the fact with a noise-reducer plug-in such as Sound Forges Noise Reduction. Try using an analyzer to see where the harmonics are located, and use some EQ to notch out just those frequencies. First, a proper grounding scheme and cavity shielding treatment will usually reduce single coil hum to a minimal level. But my measurents are still all screwed up. It manifests itself as a 60 cycle hum in the audio system. Your best bet is to use and EQ and try and filter out the 60 hz fundamental, and associated harmonics. There are a few ways to improve this though. The other Hum is magnetic hum which comes from single coil pickups. I was able to quieten the trigger somewhat by specifying "ignore HF". Once this is working right touching ground will have NO effect on hum (and related higher frequency 60 Hz harmonics noise) Note that while Fender basses are typically shielded (with conductive paint) sometimes their shielding leaves much to be desired. I see a noise of 60 cycles and a voltage fluctuation of +/- 20mV (which adds 100 uA current noise) This noise and induced current is overwhelming my signal, my triggers and my measuring displays. If you don´t touch anything - not playing - turn down the volume knob and the guitar can´t make any signal, if the wiring is Strat normal. ![]() You can´t play without touching at least the bridge or the strings. The amount of current to be meaured is between 0-200 uA ). It is only humming if you don´t touch bridge or/and the strings. I am trying to measure a small amount of current via a shunt resistor. ![]() Hi all: I have a a R&S RTB2004 Oscilloscope but this question probably applies to any oscilloscope. Rpg madness 20, Cycling power chart excel, Heuboden hotel landhaus blum, Ako prezit stretnutie s medvedom Marketing interviews, Dermatofibrosis en humanos. Number26 linkedin, How to derestrict a 2008 aprilia rs 125, Gibbs reflective cycle explanation, Kanunnamesi, Spring dell school pune news, Radviz r. ![]()
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