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IC 723 Voltage Regulators
jojoOctober - 4 - 20095 Comments
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 passtransistor, and a current limiting transistor all contained in one small package. The device can be connected to operate as a positive ornegative voltage regulator with an output voltage ranging from 2 V to 37 V, and output current levels upto 150 m A. The maximumsupply voltage is 40 V, and the line and load regulations are each specified as 0.01%.
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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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Lm317 Voltage Regulator
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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
Replysitisuehaila 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 feedback
secepat mungkin terimakasih.
Replyseetharaman 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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