As the title suggests, I cannot understand some characteristics of the RLC circuit in the case of electromagnetic induction. If the capacitor discharges a high voltage and little current into the coil, with a certain frequency, how is it possible to generate energy transmission by induction if the current is little? Is there a need for a power amplifier to also raise the current together with the voltage? Is it the peak current of the capacitor which, discharging very quickly, induces a high current? There's something I'm missing and I'm missing out

 

Welcome to AAC.

A great place to start understanding these things in electronics is to use the EDUCATION tab right next to FORUMS.
Since I can't answer your question because I don't know how I looked up in the education tab the following:
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-5/series-r-l-and-c/
This might help you understand.

 

how is it possible to generate energy transmission by induction if the current is little?

There's no specific lower limit for energy transmission by induction.

 

Welcome to AAC.

A great place to start understanding these things in electronics is to use the EDUCATION tab right next to FORUMS.
Since I can't answer your question because I don't know how I looked up in the education tab the following:
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-5/series-r-l-and-c/
This might help you understand.

Thanks for your reply, but I couldn't find an answer from the documentation. my question was, if a capacitor that accumulates a lot of voltage, but very little capacity (pico farad) and therefore very weak current (ampere per second), how can it generate a high magnetic field if you need a lot of current, i.e. many amperes ?

 

There's no specific lower limit for energy transmission by induction.

no no, by "transmission energy" I meant the induced currents that the coil creates in a conductor that is not part of the rlc circuit, for example wireless charging. so my question is if a capacitor that accumulates a lot of voltage and little capacitance, and discharges into the inductor, how does it generate a high magnetic field if to generate a magnetic field you need a high current (ampere) according to the law of biot-savart?

 

Coupling between conductors on a PCB can be by magnetic field coupling, or by capacitance coupling, both depending on current or voltage and impedance level and frequency. Coupling can also happen by surface resistance coupling if the surface accumulates materials that absorb moisture. Certainly the effect of small amounts of coupling depends on the sensitivity and impedance levels to a great extent.

 

Coupling between conductors on a PCB can be by magnetic field coupling, or by capacitance coupling, both depending on current or voltage and impedance level and frequency. Coupling can also happen by surface resistance coupling if the surface accumulates materials that absorb moisture. Certainly the effect of small amounts of coupling depends on the sensitivity and impedance levels to a great extent.

thanks for the reply. yes, in general I am referring to an RLC circuit which by induction creates induced voltages in a second non-contact circuit, but in order to create a good inductive coupling you need to have a high alternating magnetic field expressed in tesla, but when a capacitor discharges alternating current in an inductor, it increases the inductance, but so how can it increase the magnetic field density (tesla)? that is, to have a high alternating magnetic field it needs a lot of current (ampere) according to the biot-savart law, but instead a capacitor (rlc circuit) increases the inductance of the inductor, so the inductance can create the induction electromagnetic?

 

Coupling between conductors on a PCB can be by magnetic field coupling, or by capacitance coupling, both depending on current or voltage and impedance level and frequency. Coupling can also happen by surface resistance coupling if the surface accumulates materials that absorb moisture. Certainly the effect of small amounts of coupling depends on the sensitivity and impedance levels to a great extent.

hi MisterBill2 were you able to find the result?