PL123765B1 - Dc power dupply unit - Google Patents

Dc power dupply unit Download PDF

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Publication number
PL123765B1
PL123765B1 PL20858378A PL20858378A PL123765B1 PL 123765 B1 PL123765 B1 PL 123765B1 PL 20858378 A PL20858378 A PL 20858378A PL 20858378 A PL20858378 A PL 20858378A PL 123765 B1 PL123765 B1 PL 123765B1
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PL
Poland
Prior art keywords
voltage
pulse generator
threshold circuit
circuit
power supply
Prior art date
Application number
PL20858378A
Other languages
Polish (pl)
Other versions
PL208583A1 (en
Inventor
Leon Kozieja
Original Assignee
Zjednoczone Zaklady Urzadzen J
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 Zjednoczone Zaklady Urzadzen J filed Critical Zjednoczone Zaklady Urzadzen J
Priority to PL20858378A priority Critical patent/PL123765B1/en
Publication of PL208583A1 publication Critical patent/PL208583A1/xx
Publication of PL123765B1 publication Critical patent/PL123765B1/en

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  • Dc-Dc Converters (AREA)

Description

Przedmiotem wynalazku jest zasilacz pradu sta¬ lego zasalany jednym z dwóch napiec stalych, z któ¬ rych jedno jest dwukrotnie wieksze od drugiego, dajacy na wyjsciu zawsze jednakowe napiecie.• W dotychczasowej technice stosuje sie przelacz¬ nik zmiany napiecia zasilania lub szeregowy ogra¬ nicznik napiecia, zmniejszajacy napiecie wyzsze od nizszego. Wada pierwszego rozwiazania jest to, ze nie wyklucza ono mozliwosci pomylki, która do¬ prowadzi do zniszczenia urzadzenia zasilanego w przypadku wlaczenia tego urzadzenia na napiecie wyzsze przy pozostawieniu przelacznika w poloze¬ niu odpowiadajacym napieciu nizszemu. Przy dru¬ gim rozwiazaniu pojawia sie znaczna strata energii.Celem wynalazku jest opracowanie zasilacza za¬ silanego jednym z dwóch dowolnych typowych na¬ piec stalych, np. o wartosci 12 V lub 24 V, dajacego w obu przypadkach takie samo napiecie wyjscio¬ we, który nie bedzie mial wymienionych wad.Cel ten zostal osiagniety w rozwiazaniu wedlug niniejszego wynalazku, w którym uklad zasilacza pradu stalego ma uklad progowy podlaczony do zacisków napiecia wejsciowego, a pomiedzy ten uklad progowy i polaczone z soba bazy tranzysto¬ rów sa wlaczone szeregowo — uklad wylaczania generatora impulsów i generator impulsów pro¬ stokatnych.Zasilacz pradu stalego wedlug niniejszego wyna¬ lazku jest wygodny i bezpieczny w uzytkowaniu, gdyz nie stwarza ^mozliwosci pomylki przy jego obsludze.Przedmiot wynalazku jest przedstawiony w przy¬ kladzie wykonania na rysunku, który zawiera schemat ideowy ukladu elektrycznego zasilacza pradu stalego.Zasilacz ten sklada sie ze znanego podwajacza na¬ piecia, zlozonego z dwóch diod Dl i D2, dwóch tran¬ zystorów komplementarnych (pnp-npn) Tl i T2, dwóch kondensatorów Cl i C2 oraz generatora im¬ pulsów prostokatnych GI, do którego zostal dola¬ czony wylacznik generatora impulsów WG, a ten zostal polaczony z ukladem progowym UP, zawie¬ rajacym diode Zenera lub inny element progowy.Próg ukladu jest nastawiony na napiecie wyzsze od nizszego napiecia zasilajacego oraz nizsze od wyzszego napiecia zasilajacego.W przypadku zasilania napieciem wyzszym po- dwajacz napiecia jest wylaczony, a odbiornik otrzy¬ muje zasilanie przez diody Dl i D2. W przypadku zasilania napieciem nizszym zachodzi automatycz¬ ne wylaczenie wylacznika podwajacza napiecia i nastepuje podwojenie napiecia.Zastrzezenie patentowe Zasilacz pradu stalego przeznaczony do zasilania urzadzen elektrycznych jednym z dwóch wybra- 30 nych stalych napiec zasilajacych, z których jedno 10 15 20 123 7653 123 765 4 napiecie jest dwa razy wyzsze od drugiego, zawie¬ rajacy znany podwajacz napiecia skladajacy sie z dwóch diod, dwóch tranzystorów, dwóch konden¬ satorów i generatora impulsów prostokatnych, zna¬ mienny tym, ze do zacisków napiecia wejsciowego jest podlaczony uklad progowy (UP), a pomiedzy ten uklad progowy (UP) i polaczone z soba bazy tranzystorów (Tl i T2) sa wlaczone szeregowo uklad wylaczania generatora impulsów (WG) i generator impulsów prostokatnych (GI).+ O—f UL NBj l\2 Lub 24V) — O—4 ZGK 679/1110/84 — 90 egz.Cena zl 100,— PLThe subject of the invention is a DC power supply powered by one of the two DC voltages, one of which is twice the size of the other, giving the output always the same voltage. • In the current technique, a switch for changing the supply voltage or a series limiter is used voltage, reducing the voltage higher than the lower. The disadvantage of the first solution is that it does not exclude the possibility of a mistake, which will lead to the destruction of the powered device if the device is turned on at a higher voltage while leaving the switch in the position corresponding to the lower voltage. With the second solution, a significant energy loss occurs. The aim of the invention is to develop a power supply powered by one of any two conventional constant voltages, e.g. 12 V or 24 V, giving in both cases the same output voltage, which does not have the above-mentioned disadvantages. This objective has been achieved in the solution according to the present invention, in which the DC power supply circuit has a threshold circuit connected to the input voltage terminals, and between this threshold circuit and the transistor bases connected to each other are connected in series - the circuit switching off the pulse generator and the rectangular pulse generator. The DC power supply according to the present invention is convenient and safe to use, as it does not create the possibility of confusion in its operation. The subject of the invention is illustrated in an example embodiment in a drawing which contains a diagram Diagram of the electrical system of the DC power supply. This power supply consists of the well-known voltage doubler, folded one of the two diodes D1 and D2, two complementary transistors (pnp-npn) T1 and T2, two capacitors C1 and C2 and a rectangular pulse generator GI, to which the switch of the pulse generator WG was attached, and the latter was connected with a threshold circuit UP, containing a zener diode or other threshold element. The threshold of the circuit is set at a voltage higher than the lower supply voltage and lower than the higher supply voltage. In the case of a higher voltage supply, the voltage doubler is turned off and the receiver receives powered by diodes Dl and D2. In the case of a lower voltage supply, the voltage doubler switch is automatically turned off and the voltage is doubled. Patent disclaimer. A DC power supply intended to supply electrical devices with one of two selected DC voltage supplies, one of which is 10 15 20 123 7653 123 765 4 the voltage is twice as high as the other, containing the known voltage doubler consisting of two diodes, two transistors, two capacitors and a rectangular pulse generator, characterized by the fact that a threshold circuit (UP) is connected to the input voltage terminals, and between this threshold circuit (UP) and the interconnected bases of transistors (Tl and T2) are connected in series the shutdown circuit of the pulse generator (WG) and the generator of square pulses (GI). + O — f UL NBj l \ 2 or 24V) - O — 4 ZGK 679/1110/84 - 90 copies Price PLN 100, - PL

Claims (1)

1. Zastrzezenie patentowe Zasilacz pradu stalego przeznaczony do zasilania urzadzen elektrycznych jednym z dwóch wybra- 30 nych stalych napiec zasilajacych, z których jedno 10 15 20 123 7653 123 765 4 napiecie jest dwa razy wyzsze od drugiego, zawie¬ rajacy znany podwajacz napiecia skladajacy sie z dwóch diod, dwóch tranzystorów, dwóch konden¬ satorów i generatora impulsów prostokatnych, zna¬ mienny tym, ze do zacisków napiecia wejsciowego jest podlaczony uklad progowy (UP), a pomiedzy ten uklad progowy (UP) i polaczone z soba bazy tranzystorów (Tl i T2) sa wlaczone szeregowo uklad wylaczania generatora impulsów (WG) i generator impulsów prostokatnych (GI). + O—f UL NBj l\2 Lub 24V) — O—4 ZGK 679/1110/84 — 90 egz. Cena zl 100,— PL1. Patent claim A DC power supply intended to supply electrical devices with one of two selected constant voltage supplies, one of which is twice as high as the other voltage, containing a known voltage doubler consisting of from two diodes, two transistors, two capacitors and a rectangular pulse generator, characterized in that a threshold circuit (UP) is connected to the input voltage terminals, and a threshold circuit (UP) is connected between this threshold circuit (UP) and the transistor bases connected to each other (Tl and T2) are connected in series with a pulse generator (WG) shutdown circuit and a square pulse generator (GI). + O — f UL NBj l \ 2 Or 24V) - O — 4 ZGK 679/1110/84 - 90 copies. Price PLN 100, - PL
PL20858378A 1978-07-20 1978-07-20 Dc power dupply unit PL123765B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL20858378A PL123765B1 (en) 1978-07-20 1978-07-20 Dc power dupply unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL20858378A PL123765B1 (en) 1978-07-20 1978-07-20 Dc power dupply unit

Publications (2)

Publication Number Publication Date
PL208583A1 PL208583A1 (en) 1980-07-28
PL123765B1 true PL123765B1 (en) 1982-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL20858378A PL123765B1 (en) 1978-07-20 1978-07-20 Dc power dupply unit

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PL208583A1 (en) 1980-07-28

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