RO95809B1 - Apparatus for measuring flicker effect - Google Patents

Apparatus for measuring flicker effect

Info

Publication number
RO95809B1
RO95809B1 RO124551A RO12455186A RO95809B1 RO 95809 B1 RO95809 B1 RO 95809B1 RO 124551 A RO124551 A RO 124551A RO 12455186 A RO12455186 A RO 12455186A RO 95809 B1 RO95809 B1 RO 95809B1
Authority
RO
Romania
Prior art keywords
circuit
voltage comparator
output
voltage
reference voltage
Prior art date
Application number
RO124551A
Other languages
Romanian (ro)
Inventor
Pavel Haiduc
Ion Chiuta
Radu Constantin
Original Assignee
Pavel Haiduc
Ion Chiuta
Radu Constantin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pavel Haiduc, Ion Chiuta, Radu Constantin filed Critical Pavel Haiduc
Priority to RO124551A priority Critical patent/RO95809B1/en
Publication of RO95809B1 publication Critical patent/RO95809B1/en

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  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

Inventia se refera la un aparat cu indicare numerica, utilizat la masurarea efectului de flicker, datorat fluctuatiilor tensiunii retelei electrice. Aparatul, conform inventiei, cuprinde un redresor bialternanta, un filtru trece jos, un etaj de filtrare ce simuleaza sensibilitatea diferita a ochiului uman, în functie de frecventa de fluctuatie a fluxului luminos, emis de sursele electrice de iluminat, un etaj de ridicare la patrat si un integrator, iesirea circuitului de integrare fiind conectata la un comparator de tensiune, pe cealalta intrare a comparatorului de tensiune fiind aplicata o tensiune de referinta, furnizata de o sursa de tensiune de referinta, iesirea comparatorului de tensiune fiind conectata la un circuit monostabil, impulsul furnizat de acesta aplicându-se unui circuit poarta SI si totodata unui comutator electronic, ce produce descarcarea unui condensator de intragrare, circuitul poarta SI lasând sa treacaa implsurile furnizate de circuitul monostabil, pentru a finumartate si afisate de un circuit de numarare si afisare, pe durata de timp T, pe care se doreste obtinerea dozei de flicker cumulate, durata furnizata de o baza de timp.The invention relates to a numerical display apparatus used to measure the flicker effect due to voltage fluctuations of the electrical network. According to the invention, the apparatus comprises a bi-alternate rectifier, a low pass filter, a filtering stage simulating the different sensitivity of the human eye, depending on the fluctuation frequency of the light output emitted by the electrical lighting sources, a square- and an integrator, the output of the integration circuit being connected to a voltage comparator, a reference voltage being applied to the other input of the voltage comparator provided by a reference voltage source, the output of the voltage comparator being connected to a monostable circuit, the impulse provided by it is applied to an SI gateway circuit and also to an electronic switch which causes the download of an intergraph capacitor, the circuit bears the SI allowing the passes provided by the monostable circuit to be finummed and displayed by a counting and display circuit, during the time T, which is intended to obtain the cumulative dose flicker, the length of the furnish based on a time base.

RO124551A 1986-08-10 1986-08-10 Apparatus for measuring flicker effect RO95809B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO124551A RO95809B1 (en) 1986-08-10 1986-08-10 Apparatus for measuring flicker effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO124551A RO95809B1 (en) 1986-08-10 1986-08-10 Apparatus for measuring flicker effect

Publications (1)

Publication Number Publication Date
RO95809B1 true RO95809B1 (en) 1988-11-01

Family

ID=40904891

Family Applications (1)

Application Number Title Priority Date Filing Date
RO124551A RO95809B1 (en) 1986-08-10 1986-08-10 Apparatus for measuring flicker effect

Country Status (1)

Country Link
RO (1) RO95809B1 (en)

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