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PL406190A1 - Two-stage input circuit with galvanic insulation - Google Patents

Two-stage input circuit with galvanic insulation

Info

Publication number
PL406190A1
PL406190A1 PL406190A PL40619013A PL406190A1 PL 406190 A1 PL406190 A1 PL 406190A1 PL 406190 A PL406190 A PL 406190A PL 40619013 A PL40619013 A PL 40619013A PL 406190 A1 PL406190 A1 PL 406190A1
Authority
PL
Poland
Prior art keywords
resistor
capacitor
optocoupler
resistors
divider
Prior art date
Application number
PL406190A
Other languages
Polish (pl)
Other versions
PL225551B1 (en
Inventor
Grzegorz Kowalski
Andrzej Nowakowski
Original Assignee
Instytut Tele- I Radiotechniczny
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 Instytut Tele- I Radiotechniczny filed Critical Instytut Tele- I Radiotechniczny
Priority to PL406190A priority Critical patent/PL225551B1/en
Publication of PL406190A1 publication Critical patent/PL406190A1/en
Publication of PL225551B1 publication Critical patent/PL225551B1/en

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  • Measurement Of Current Or Voltage (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)

Abstract

Układ wejścia dwustanowego z izolacją galwaniczną zawiera mostek prostowniczy (MP), którego wejścia zmiennoprądowe połączone są z diodą zabezpieczającą (DZ) i przez rezystor szeregowy (R1) dołączone są do napięcia wejściowego (Uwe). Wyjście dodatnie mostka prostowniczego (MP) dołączone jest do kondensatora (C) oraz do rezystora ograniczającego (R5), który dołączony jest do diody LED transoptora (Tr). Kolektor i emiter transoptora (Tr) dołączone są do wyjścia układu (Uwy). Dioda LED transoptora (Tr) dołączona jest do kolektora tranzystora (T), którego emiter połączony jest z zaciskiem masy (M) detektora napięcia (D), rezystorem histerezy (R4), kondensatorem (C) i wyjściem ujemnym mostka prostowniczego (MP). Rezystory (R2, R3 i R4) stanowiące dzielnik napięciowy, połączone są ze sobą szeregowo i dołączone równolegle do kondensatora (C). Punkt wspólny rezystorów dzielnika (R2 i R3) dołączony jest do wejścia (U) detektora napięcia (D), a punkt wspólny rezystorów dzielnika i histerezy (R3) i (R4) dołączony jest do wyjścia (O/C) detektora napięcia (D), typu "otwarty kolektor", do którego dołączona jest także, przez rezystor bazowy (R6), baza tranzystora (T).The binary input system with galvanic isolation contains a bridge rectifier (MP) whose AC inputs are connected to a protection diode (DZ) and connected to the input voltage (Uwe) via a series resistor (R1). The positive output of the rectifier bridge (MP) is connected to the capacitor (C) and to the limiting resistor (R5), which is connected to the LED of the optocoupler (Tr). The collector and optocoupler emitter (Tr) are connected to the system output (Uwy). The optocoupler LED (Tr) is connected to the transistor collector (T), whose emitter is connected to the ground terminal (M) of the voltage detector (D), hysteresis resistor (R4), capacitor (C) and negative bridge rectifier (MP). Resistors (R2, R3 and R4) constituting the voltage divider, are connected in series and connected in parallel to the capacitor (C). The common point of the divider resistors (R2 and R3) is connected to the input (U) of the voltage detector (D), and the common point of the divider and hysteresis resistors (R3) and (R4) is connected to the (O / C) output of the voltage detector (D) , "open collector" type, to which is also connected, through the base resistor (R6), the base of the transistor (T).

PL406190A 2013-11-22 2013-11-22 Two-stage input circuit with galvanic insulation PL225551B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL406190A PL225551B1 (en) 2013-11-22 2013-11-22 Two-stage input circuit with galvanic insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL406190A PL225551B1 (en) 2013-11-22 2013-11-22 Two-stage input circuit with galvanic insulation

Publications (2)

Publication Number Publication Date
PL406190A1 true PL406190A1 (en) 2015-05-25
PL225551B1 PL225551B1 (en) 2017-04-28

Family

ID=53176097

Family Applications (1)

Application Number Title Priority Date Filing Date
PL406190A PL225551B1 (en) 2013-11-22 2013-11-22 Two-stage input circuit with galvanic insulation

Country Status (1)

Country Link
PL (1) PL225551B1 (en)

Also Published As

Publication number Publication date
PL225551B1 (en) 2017-04-28

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