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TRANSPAK T752 ™ Potentiometer Input Isolating, Field
TRANSPAK T752 ™ Potentiometer Input Isolating, Field

... 2. Select the output range using switch 1. The CLOSED position selects a 10-50mA output. The OPEN position selects a 4-20mA output. (Switches 2-6 are not used.) 3. Connect the input to a potentiometer. Connect the output loop to a voltage supply and monitor the output current (refer to the terminal ...
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... We can see directly from this circuit that at DC, VG  0 . Recall that for operation in the saturation mode VGD  Vt (with VGS  0 ). Now, for 2 -V swing in vo and large AC gain, we want RD to be large. Hence, let’s choose VD  0 (since Vt  2 V). Then for this 2 -V swing in vo VGD min  0  2   ...
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NTUST-EE-2013S
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Wilson current mirror



A Wilson current mirror is a three-terminal circuit (Fig. 1) that accepts an input current at the input terminal and provides a ""mirrored"" current source or sink output at the output terminal. The mirrored current is a precise copy of the input current. It may be used as a Wilson current source by applying a constant bias current to the input branch as in Fig. 2. The circuit is named after George R. Wilson, an integrated circuit design engineer who worked for Tektronix. Wilson devised this configuration in 1967 when he and Barrie Gilbert challenged each other to find an improved current mirror overnight that would use only three transistors. Wilson won the challenge.
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