Abstract:
The tensioning apparatus is destined for use with silk screens essentially constituted by a flat frame (10) on which a screen material (2) or sieve is arranged. It comprises means for fixing the screen material (2) peripherally on the frame (10), and means for tensioning, associated to the frame (10), which operate between the frame (10) and the screen material (2) in order to tension the screen material (2).
Abstract:
The invention relates to an integrated self-powered and switching electronic circuit (10) for regulating a stable reference voltage (Vr), comprising a band-gap voltage generator to produce said stable reference voltage (Vr) for a system circuit block (2, 12) that is generally supplied by the output of the band-gap generator through a comparator and an error amplifier. A regulating loop is provided between the output of the system block (12) and the input of the voltage generator circuit (10) to supply a voltage signal (SENSE) produced by the output of the system block. Advantageously, the voltage generator circuit incorporates both the comparator and the error amplifier.
Abstract:
The invention relates to an integrated self-powered electronic circuit (10) for regulating a stable reference voltage (Vr), which comprises a band-gap generator to produce said stable reference voltage (Vr), a circuit block (2, 12) supplied by a controlled voltage obtained from the reference voltage, (Vr) through a comparator and an error amplifier, to output a regulated voltage (Vs), and a regulating loop inserted between the output of the regulator circuit (10) and the output of the band-gap generator and including a normalizing block (3,13). Advantageously, the circuit (10) comprises a band-gap generator (11) directly supplied by the regulated voltage (Vs) and incorporating both the comparator and the error amplifier.
Abstract:
The invention relates to an integrated self-powered and switching electronic circuit (10) for regulating a stable reference voltage (Vr), comprising a band-gap voltage generator to produce said stable reference voltage (Vr) for a system circuit block (2, 12) that is generally supplied by the output of the band-gap generator through a comparator and an error amplifier. A regulating loop is provided between the output of the system block (12) and the input of the voltage generator circuit (10) to supply a voltage signal (SENSE) produced by the output of the system block. Advantageously, the voltage generator circuit incorporates both the comparator and the error amplifier.
Abstract:
The invention relates to a switching regulator circuit (10) producing a varying reference voltage (Vr) with temperature, which circuit includes a band-gap generator (2) for supplying at a power stage through an error amplifier (4) and a comparator (5). To the error amplifier (4) is also applied a regulated voltage (Vs) which may be produced by the regulator itself. Advantageously, the regulator (10) comprises a plurality of band-gap generators (12) being all supplied by the regulated voltage (Vs) and input a fraction of the regulated voltage (Vs) through a voltage divider (6), the respective outputs of the band-gap generators (12) being connected to a logic network (11) which has an output connected to the power stage. The error amplifier and comparator are incorporated to each of the generators (12).