Compare Ideal vs. Real Filter with an LCR Meter - Workbench Wednesdays

Compare the ideal and measured cut-off frequency for a filter with a handheld LCR meter. Unlike a DMM, these meters apply an AC signal (from 100 Hz to 100 kHz) to determine the reactive component of an inductor, capacitor, or resistor. A simple example here is a low-pass filter. See how the ideal and measured cut-off frequency varies. And THEN, see how it compares between a PCB and a Breadboard: bit.ly/3s7aRuK
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#DMM #DigitalMultiMeter #LCR #LCRMeter #Filter #LowPass

[@marekmosat7176]

absolutelly perfect video. Sir, you are great

[@Bob-tu9jq]

excellent teacher

[@AmRadPodcast]

At least it’s not DC. Thanks for the chuckle!

[@stargazer7644]

As a microwave RF designer, it’s all DC. Lol

[@andreaswaldherr7008]

Thanks a lot!

[@turkalpkucur]

thank you

[@Luke-12V]

good evening, the device can also measure capacitors in the circuit, thank you very much

[@8Junio76]

Would you recommend the Hantek LCR meter?

[@martinkuliza]

Obviously that's why it's in the video

[@sudheerkumar5966]

Very good

[@DAVIDGREGORYKERR]

Would it be a better idea to use Texas Instruments DSP processing and High School mathematics to do the donkey work and use a sampling rate of 4x the frequency to be filtered io for a cutoff frequency of 100khz would be 400khz the filter shown is not for 100 hz to 100 khz is just an example.
long double m_pNum[5] = {0.001836, 0.007344, 0.011016, 0.007344, 0.001836};
long double m_pDen[5] = {1.0, -3.0544, 3.8291, -2.2925, 0.55075};
long double m_px[20]={0.0};
long double m_py[20]={0.0};
void IIR_Filter(long double data_in[], long double data_out[], int len)
{
int i, k;
for(k = 0; k < len; k++)
{
m_px[0] = data_in[k];
m_py[0] = 0.0;
for(i = 0; i = 1; i--)
{
m_py[i] = m_py[i-1];
}
data_out[k] = m_py[0];
}
}

[@lesotter7241]

no