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Questions tagged [resonant]

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4 votes
2 answers
404 views

Understanding the discrepancy between Input and Output power in ZVS Induction heater

I am using a ZVS induction heater like this: Image Source The schematic looks akin to this (schematic has not been tested) Schematic Source I modified it with IRF3205 N-Channel MOSFETs for better ...
15 Volts's user avatar
  • 707
1 vote
0 answers
28 views

Best optotriac/phototriac for switching an inductor out of a circuit [closed]

I have the circuit below where I'm using a full bridge driver to drive an LC circuit (L1 and C1). I want to switch another inductor (L2) in and out of this circuit to alter the resonant frequency, on ...
Vernon's user avatar
  • 43
0 votes
0 answers
25 views

Regarding the equation derivations of the resonant state of an asynchronous buck converter observing zero voltage switching

I'm currently reading this article of Bill Andreycak to understand the mathematics behind zero voltage switching: https://www.ti.com/lit/an/slua159/slua159.pdf?ts=1710666811170&ref_url=https%253A%...
QUEEN SLEAZE's user avatar
0 votes
0 answers
33 views

Piezoelectric disks gives higher output at a particular low frequency far from the resonant frequency?

I have a PZT disk attached to a shaker/vibration generator. The resonant frequency is 3.9kHz. The following is the output of the PZT disk on the shaker, being shook at different frequencies. One ...
HFOrangefish's user avatar
0 votes
2 answers
109 views

Asymmetric LC tank with diodes

Is there a circuit that can produce an asymmetric wave, where some parameters of positive and negative half waves are different, such as voltage amplitude or time? Intuition says that we need a ...
Surprised Seagull's user avatar
0 votes
1 answer
60 views

Make a tune-able resonant frequency

Using a long cable to a LC circuit reduced the resonant frequency, I reduced the inductance in order to increase the frequency; it worked. However the voltage amplitude decreased significantly. How ...
Nana's user avatar
  • 11
0 votes
3 answers
753 views

Finding resonant frequency in a circuit with no inductor

I have a parallel circuit and I need to find its resonant frequency. However, there is only a capacitor paralleled with a resistor and there is no inductor included. So is it correct that in using the ...
char's user avatar
  • 1
2 votes
3 answers
308 views

Building a capacitor, and the ESR is high. What can I do to reduce it?

I have an LC circuit, with an inductor of 1 mH, and a capacitor of around 1 nF. I built a capacitor using two aluminum plates and a dielectric material that I got from Amazon. When at resonance 144Khz ...
Sam 's user avatar
  • 319
1 vote
2 answers
88 views

Is Petersen coil in resonant network tuned also for capacitor banks?

Petersen coil is tuned every 2-3 minutes to compensate for a certain percentage of capacitive current in resonant grids during earth faults. But, if capacitor banks with ground connection are switched ...
Samuele Benito Di Gioia's user avatar
0 votes
1 answer
152 views

Finding ESR of LCR circuit?

I have an LCR circuit, and I am trying to find the ESR of a capacitor. I bought a 820uH inductor , and an ultra-low 1000pF capacitor, and a 46.6ohm 1% tolerance resistor. Below is my circuit with ...
Sam 's user avatar
  • 319
0 votes
1 answer
274 views

LC Driver burned Mosfet

I am using this circuit to drive my LC tank for my metal detector, PWM is from esp8266, 3V3 max, operating frequency 6.1kHz, inducatance and capacitance are for reference (but are close enough) It ...
asim's user avatar
  • 600
0 votes
1 answer
182 views

Resonant RF transformer using a piece of wire (no capacitors)

I'm curious if it is possible to build a spark-gap Tesla coil without using capacitors at all. Basically, treating the primary and secondary as TX/RX antennas and cutting them to proper length so that ...
elgroovy's user avatar
-4 votes
3 answers
134 views

Resonant LC filters on a spherical capacitor [closed]

In the setup below, the circles are plates of a capacitor, and there are two LC filters mounted on it. Would the current prefer to pass via the filters if they are tuned to resonate at the frequency ...
Thevenin's user avatar
2 votes
1 answer
515 views

Skim excess power from a resonant circuit without draining it?

If you have a resonant circuit, oscillating at its self-resonant frequency, how would you extract the excess power without draining it fully? A high Q resonant transformer impedance matched to the ...
John Hawthorne's user avatar
0 votes
1 answer
379 views

What LC tank circuit is needed for a 318 MHz remote control 9 DIP switch for a garage door controller transmitter opener using the PT2262 IC?

I want to use the PT2262 remote control encoder to create a garage door remote. This is just for fun. (I realize I can get a universal controller 318 MHz 9-DIP switch remote for about $16.) I was ...
adamaero's user avatar
  • 677