1. Radhabai Kale mahila mahavidyalaya,ahmednagar Department of Physics
Radhabai Kale mahila mahavidyalaya,ahmednagar Department of Physics. POWER SUPPLY
REPRESENTED BY Prof.Kapare A.K.

2. 8 TRANSFORMER OBS.NO.; NAME PICTURE 1 IC723 2 CAPACITOR 3
POTENTIOMETERE 4
DIODE 5
TRANSISTOR 6
RESISTOR 7
CED 8
TRANSFORMER

4. Capacitor store charges It works as filter

5. Resistor
Resistor is electrical component with primary function to limit the flow of current
Resistor has four color code,
The first two are:
1st two digital and third multiplexer and 4th tolerance

6. diode Diode is a device which allows flow of current in one direction.
It is polarized component with two leads called cathode and anode
The cathode normally marked the silver colored band

7. Zener diode
Zener :always in reverse bias
It remove fluxuation

8. potentiometer
Potentiometer have a three legs as a create voltage divider, basically two resistor in series
Use: resistance adjust

9. ic723 This commonly use for series voltage regulator application
It can be use as both positive and negative voltage regulator
LM723IC can be use as temperatures controller, current regulator, available In both dual-in-line and metal can package.

10. Pin configuration Pin No. Pin Name Description 1 NC Not connected 2
Pin No.
Pin Name
Description 1 NC
Not connected 2
Current Limit
This terminal is used for current limiting 3
Current Sense
This terminal is used for current limiting and foldback application 4
Inverting i/p
Helps in providing constant output voltage 5
Non-inverting i/p
Used to provide reference voltage to the op-amp inside 6
Vref
Gives reference voltage of nearly 7v 7
-Vcc
Ground  8 9 Vz
Used in the application of negative voltage regulator 10
Vout
Output pin of the IC 11 Vc
This terminal is directly supplied from the supply when not connected to series pass transistor 12 V+
Positive supply input 13
Frequency Compensation
This terminal helps in reducing noise, by adding a capacitor of 100pf with it 14

11. Internal Block diagram of LM723 IC

12. Where to use LM723 IC?
LM723 is an adjustable voltage regulator IC used for shunt regulator, current regulator, and temperature controller. It can able to provide a higher range of output voltage and current up to 10A by simply adding a series pass transistor with it, with having a wider range of operating temperature so the IC able to withstand for long. Also able to use as either linear or switching type regulator. But this IC is specially designed for series regulator application.

13. Circuit diagram

14. features
Excessive output current of 150mA without external pass transistor.
Better Input supply voltage of maximum 40v.
Provide adjustable output from 3v to 37v.
Used in making linear or switching regulator.
Able to provide 10A of output current with use of external pass transistor.
Used for various operation like positive supply, negative supply, series, shunt, and floating.

16. Thank you