Abstract: An amplifier circuit includes an operational amplifier and a compensation circuit. The operational amplifier includes an amplifying stage for amplifying an input signal to generate an amplifying signal; and an output stage coupled to an output node of the amplifying stage for receiving the amplifying signal and generating an output signal according to the amplifying signal. The compensation circuit is coupled to the output stage and the amplifying stage for generating a compensation signal according to the output signal, and feeding the compensation signal back to the output node of the amplifying stage for compensating the amplifying signal.

Abstract: A bandgap reference circuit for generating a reference voltage includes an operational amplifier; a plurality of transistors connected to the operational amplifier; a plurality of resistances connected to the plurality of transistors; and a plurality of bipolar transistors connected to the plurality of resistances. First and second resistances of the plurality of resistances are used for voltage level shifting so that the operational amplifier can normally operate.

Abstract: The present invention relates to a bandgap reference circuit for generating a reference voltage. The bandgap reference circuit comprises an operational amplifier; a plurality of transistors connected to the operational amplifier; a plurality of resistances connected to the plurality of transistors; and a plurality of bipolar transistors connected to the plurality of resistances. A first and a second resistances of the plurality of resistances are used for voltage level shifting so that the operational amplifier can normally operate.

Abstract: A workpiece supporting assembly of a carpenter's plane is mounted on a workbench of the carpenter's plane and composed of a slide slot seat which is adjustably fastened with the carpenter's plane and provided with a first fastening member, a fastening seat mounted on the slide slot seat, a lock rod located at the side of the fastening seat and provided with a second fastening member, an angle adjusting member pivoted to the fastening seat, a grid plate pivoted to other side of the angle adjusting member and fastened with one end of the lock rod, and a fastening member having a first fastening portion which is connected with the first fastening member, and a second fastening portion which is connected with the second fastening member.