Challenge yourself in our second Würth Elektronik „Great minds“ Quiz

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The quiz is about the piezoelectric effect and its application in crystal oscillators.

Take your chance and win one out of eight Evaluation Boards that enable you to test oscillator in a quick and easy way!

Take part and try your luck until the end of February 2023. The winners of this quiz will be informed on the 1st of March 2023 via email. The quiz was prepared by Distrelec and Würth Elektronik, and the data collected through respondents will be only used to select the winner. To win you have to get all your answers correct and fill the quiz the quickest.

*For some hints in order to answer the questions check out the Würth Elektronik eiSos portfolio of Quartz Crystals & Oscillators and IQD page here.

Great minds in the past – Great Minds today: Challenge yourself!

#2 Jacques und Pierre Curie

The brothers Jacques and Pierre Curie were French physicists and discovered piezoelectricity in 1880 (yes, that’s the same Pierre Curie, who together with his wife, Marie Curie discovered Radium in 1898). The first crystal oscillator wasn’t built until 1917, and the first quartz crystal controlled crystal oscillator was constructed in 1921.

Jacques, born in 1855 in Paris, and Pierre, born in 1859 in Paris were sons of (medical) doctor Eugène Curie (1827-1910) and his wife, the manufacturer’s daughter Sophie-Claire Depouilly (1832-1897). Both were privately educated by their father and didn’t visit a public school. Both earned degrees in physics and worked together at the School of Physics and Chemistry in Paris, where they then discovered the piezoelectric effect in 1880. Pierre died early in 1906 in a traffic accident when he fell under a horse-drawn vehicle. Jacques later became Professor in mineralogy at Montpellier university and died in Montpellier in 1941.

Early alternatives to the quartz crystal oscillator involved inductive capacitive circuits. Here the values of inductance and capacitance would change with temperature, humidity, atmospheric pressure and age to such an extent that a radio could not stay tuned. A radio operator would be employed full time to manually adjust the capacitor plates and keep the carrier frequency correct. The invention of the crystal radio circuit leads to the phrase “crystal clear”, such was the excitement of the new radio technology.

Challenge yourself in our second „Great Minds“ Quiz from Würth Elektronik

Where does the word piezoelectricity come from?

What is piezoelectricity? Fill in the blank boxes with one of the following answers: biological – Piezoelectricity – mechanical stress – charge – crystals.

is the electric that accumulates in certain solid materials—such as , certain ceramics, and matter such as bone, DNA, and various proteins—in response to applied .

Which of the following materials show a piezo electric effect?

How many Nobel Prizes have the Curie family won in total?

What’s the name of the SI unit for the measurement of oscillation?

What’s a crystal oscillator? Fill in the blank boxes with one of the following answers: circuit – piezoelectric – oscillator – frequency – crystal.

A crystal is an electronic oscillator that makes use of as a selective element to obtain an inverse effect. The term crystal oscillator refers to the , not the resonator.

Which of the following is the likely accuracy of a crystal oscillator?

Which type of oscillator is Wurth Electronics offering?

Select all that apply.

The resistive element of a crystal causes losses in the feedback loop of an oscillator circuit. Which of the following will have the highest resistive value?

Incorrectly calculating the capacitive load as seen by the crystal looking out to the PCB will have the most significant effect on:

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Do you want to compete with someone you know? Send them this link: that they can also take part in this quiz!

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The data you provide in the entry form will be used for the purpose of conducting and processing the competition. The data you provide enables us to determine whether you are eligible to participate and to determine and notify you in the event that you win. The processing of the personal data collected as part of the sweepstakes is carried out for the implementation and processing of the sweepstakes on the basis of Art. 6 (1) sentence 1 b) DSGVO (implementation of a contractual relationship) and by the existence of a legitimate interest pursuant to Art. 6 (1) sentence 1 f) DSGVO. The legitimate interest is to enable you to participate in the competition and, in the event of a win, to be able to send it to you.

Distrelec sometimes uses specialized technical service providers for the implementation and processing of the sweepstakes within the scope of the technical processing of your personal data. We commission Würth Elektronik to send the prize. If such a service provider is involved, they are carefully selected and legally and contractually obligated to ensure a high level of data protection. The commissioned processing of your data is carried out in accordance with Art. 28 DSGVO. We will only disclose your personal data to third parties for purposes other than those stated here if there is a legal obligation to do so in the form of an overriding legal provision (e.g. in the case of an audit).

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