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IC 723 Voltage Regulators - Electronic Circuits and Diagram-Electronics Projects and Design
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IC 723 Voltage Regulators jojo October - 4 - 2009 5 Comments
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IC 723 Voltage Regulator Figure shows the basic circuit of an IC 723 voltage regulator. This IC has a voltage reference source, an error amplifier, a series transistor, and a current limiting tran sistor all contained in one small package. The device can be connected to operate as a positive or negative voltage regulator with an output voltage ranging from 2 V to 37 V, and output current levels upto 150 m A. The maximum supply voltage is 40 V, and the line and load regulations are each specified as 0.01%.
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IC 723 Voltage Regulators - Electronic Circuits and Diagram-Electronics Projects and Design
IC 723 As positive voltage regulator Figure shows an IC 723 connected to operate as a positive voltage regulator. The output voltage can be set to any value between approximately 7 V (reference voltage) and 37 V by appropriate selection of resistors R1 and R2. A potentiometer may be included between R1 and R2, of course, to make the voltage adjustable. An external transistor may be Darlington connected to Q1 (as shown in earlier post) to handle large load current. The broken lines in the figure shows connections for simple (non-foldback) current limiting. (Foldback current limiting can also be used with IC 723). A regulator output voltage less than the 7 V reference level can be obtained by using a voltage divider across the reference source [terminals 6 and 7 in earlier figure]. The potentially divided reference voltage is then connected to terminal 5. It is important to note that the supply voltage, at the lowest point on the ripple waveform, should be at least 3 V greater than the output of the regulator and greater than VREF; otherwise a high-amplitude output ripple may occur.
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5 Responses to “IC 723 Voltage Regulators” Sabir adde says: February 17, 2013 at 2:16 am How does the voltage regulator work with nagative voltage r Reply sitisuehaila says: September 10, 2011 at 4:03 pm jawapan nie ada kaitan tak dengan topik DC REGULATED POWER SUPPLY USING IC UA723? harap dapat bagi secepat mungkin terimakasih. Reply seetharaman says: July 27, 2011 at 8:35 am Hi Elango use the following circuit which will convert +12 to -12 volt for low current application. http://www.elektropage.com/default.asp?tid=691 Reply suresh says: July 25, 2011 at 6:28 pm i think it will get by changing the polarities. Reply elango says: February 28, 2010 at 12:00 am i have +12vdc. but i want -12vdc supply how to convert this supply? Reply
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