BR9903334C1

BR9903334C1 - Automatic grounding and electric shock protection device for home appliances

Info

Publication number: BR9903334C1
Application number: BR9903334-8A
Authority: BR
Inventors: Chang Das Estrelas Wilches
Original assignee: Chang Das Estrelas Wilches
Priority date: 1999-07-20
Filing date: 1999-07-20
Publication date: 2001-05-08
Also published as: BR9903334A

Abstract

''DISPOSITIVO AUTOMáTICO DE ATERRAMENTO E PROTEçãO CONTRA CHOQUE ELéTRICO PARA ELETRODOMéSTICOS'' O presente certificado de adição consta de uma discussão mais detalhada do dispositivo já descrito na patente depositada, aliando-se melhor a fonte de energia ao método de manutenção da neutralidade da massa. Caracteriza-se por ser constituído de duas resistências (1) e (2), a primeira ligada tanto ao ponto de alimentação (P) quanto à ponte de diodos retificadora (3), sendo, a segunda, ligada ao ponto (Q) e ao outro terminal de corrente alternada da citada ponte, ademais, o capacitor (4), ligado ao ponto (P) e ao terminal positivo da ponte (3), bem como, o capacitor (5), ao ponto (Q) e ao terminal negativo desta (3). O diodo (6), ligado ao terminal positivo da ponte (3) e ao diodo zener (8), está disposto de modo a permitir fluxo de elétrons no sentido zener (8) ao terminal positivo da ponte (3), ou mesmo, ao capacitor (4). O diodo (7), ligado ao terminal negativo da ponte (3) e ao diodo zener (9), permite fluxo de elétrons no sentido terminal negativo da ponte (3) e capacitor (5) para o zener (9). O restante, fusíveis (11) e (12), relé de duas palhetas (10), massa (13) e carga (14), dispõem-se do mesmo modo do pedido de patente principal.'' AUTOMATIC GROUNDING AND PROTECTION AGAINST ELECTRIC SHOCK FOR ELECTRIC HOUSEHOLD APPLIANCES '' The present certificate of addition consists of a more detailed discussion of the device already described in the filed patent, better combining the energy source with the method of maintaining mass neutrality . It is characterized by being constituted by two resistors (1) and (2), the first connected both to the supply point (P) and to the rectifier diode bridge (3), the second being connected to the point (Q) and the other alternating current terminal of the aforementioned bridge, in addition, the capacitor (4), connected to the point (P) and the positive terminal of the bridge (3), as well as the capacitor (5), the point (Q) and the negative terminal of this (3). The diode (6), connected to the positive terminal of the bridge (3) and to the zener diode (8), is arranged to allow electrons to flow in the zener direction (8) to the positive terminal of the bridge (3), or even, to the capacitor (4). The diode (7), connected to the negative terminal of the bridge (3) and to the zener diode (9), allows electron flow in the negative terminal direction of the bridge (3) and capacitor (5) to the zener (9). The rest, fuses (11) and (12), two-reed relay (10), earth (13) and load (14), are disposed of in the same way as in the main patent application.