摘要:
A current path of a first transistor (TR1) is connected in series to a communication line. When the electric current through the current path of the first transistor (TR1) becomes equal to or greater than a set electric current, a current-limiting controller (231) limits the electric current through the current path by controlling the first transistor (TR1) to increase the resistance of the current path. When the end-to-end voltage of the current path of the first transistor (TR1) becomes equal to or greater than a set voltage, a load limiter (232) switches the first transistor (TR1) off.
摘要:
The invention relates to an electronic circuit (1) for charging a rechargeable battery (15) of a fan filter device (20), which rechargeable battery can be supplied with energy by an external source of electric energy. The invention further relates to a rechargeable battery (15) of a fan filter device (20), a fan filter device (20) for a fan filter system (30), and a method for charging a rechargeable battery (15) of a fan filter device (20).
摘要:
A current path of a first transistor (TR1) is connected in series to a communication line. When the electric current through the current path of the first transistor (TR1) becomes equal to or greater than a set electric current, a current-limiting controller (231) limits the electric current through the current path by controlling the first transistor (TR1) to increase the resistance of the current path. When the end-to-end voltage of the current path of the first transistor (TR1) becomes equal to or greater than a set voltage, a load limiter (232) switches the first transistor (TR1) off.
摘要:
Ce dispositif (17) de protection d'un circuit (14) contre des surtensions comprend une résistance non linéaire (18) et une diode Zener (22). La résistance non linéaire (18) est destinée à être connectée aux bornes d'une source d'alimentation électrique (16) du circuit (14). La diode Zener (22) et la résistance non linéaire (18) comprennent chacune une première extrémité de connexion (18a, 22a) et une deuxième extrémité de connexion (18b, 22b). La première extrémité (22a) de la diode Zener (22) est connectée à la première extrémité (18a) de la résistance non linéaire (18). Le dispositif (17) comprend en outre un composant (20) limiteur de courant, propre à limiter l'intensité d'un courant le traversant. Le composant limiteur de courant (20) est connecté entre la deuxième extrémité (18b) de la résistance non linéaire (18) et la deuxième extrémité (22b) de la diode Zener (22).
摘要:
Embodiments of the present invention provide a power supply module and a soft start method. The power supply module includes an input detection circuit (53) configured to output a first notification signal to a trigger drive circuit (54) when it is determined that the power supply module receives a power supply signal; the trigger drive circuit configured to, upon receipt of the first notification signal sent from the input detection circuit, wait for a predetermined duration without sending a drive signal to a current limiting circuit (52), and to send the driver signal to the current limiting circuit (52) when the predetermined duration elapses; and the current limiting circuit configured to limit a current on a Direct Current (DC) bus (51) of the power supply module when the drive signal is not received by the current limiting circuit, and not to limit the current on the DC bus upon receipt of the drive signal.
摘要:
A control circuit and a method for controlling a control circuit (1) is described. The control circuit (1) is connected to at least two electrical loads (2, 3, 4) connected in parallel. An electric melting metal fuse (5, 6, 7) is connected in series with each electrical load. The method comprises the steps of: monitoring the total current provided to the electrical loads (2, 3, 4), and in case the total current from the control circuit (1) during normal operation exceeds a nominal preset current limit, providing one of: a first electric pulse (15) to the loads (2, 3, 4) during a preset first time period at a current which is higher than the nominal preset current limit, and a second electric pulse (16) to the loads (2, 3, 4) during a preset second time period, wherein the current in the second electric pulse (16) is higher than the current in the first electric pulse (15) and wherein the second time period is shorter than the first time period.
摘要:
The invention relates to a system for supplying direct current and DC voltage, including a first supply branch (212) having a first DC voltage source (244) and a power field-effect transistor (258) of a current limiter (256) which are connected in series, and a second supply branch (214) having a second DC voltage source (246). The power transistor (258) has a current/voltage characteristic with a first inverse polarization area without current limitation, and a second conduction area with current limitation based on a current threshold. The power field-effect transistor (258) is connected to the first voltage source (244) with an inverse polarization when the voltage source (244) of the first branch (212) is operating normally.