Power Supply. - This is one of the useful power supply circuit schematic for you who want to build regulator power supply that the output can be adjusted from 0 to 50VDC at least current 2A. Other advantage to use this circuit is completed with overcurrent protection when short circuit happened.
The circuit schematic mentioned look like shown in Figure 1 below. The main component used in this circuit is LM723 IC with it better performance and popular used to build power supply.
The circuit schematic mentioned look like shown in Figure 1 below. The main component used in this circuit is LM723 IC with it better performance and popular used to build power supply.
Circuit Schematic
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| Figure 1. Circuit schematic of DC 0-50V at 3A Variable Power Supply with Short Circuit Protection using LM723 IC (Source: eleccircuit.com) |
Component Part
- LM723
- IC1 = LM723—High precision voltage regulator = 1 pcs.
- TR1 = BF423—PNP transistor = 1 pcs.
- TR2,TR3 = BF422—NPN transistor = 2 pcs.
- TR4 = BD140—PNP transistors = 1 pcs.
- TR5 = 2SC5200—NPN transistors = 1 pcs.
- ZD1 = 36V 0.5W Zener diode = 1 pcs.
- D1-D4 1N5401—3A 100V Diode = 4 pcs.
- LED1,LED2—LED 3 mm as you want = 2 pcs.
- R1,R2 = 0.1 ohms 2W = 2 pcs.
- R3 = 56 ohms 0.5W = 1 pcs.
- R4,R10 = 100K 0.25W = 2 pcs.
- R5,R8,R20 = 10K 0.25W = 3 pcs.
- R6,R22,R23 = 1K 0.25W = 3 pcs.
- R7 = 15K 0.25W = 1 pcs.
- R9 = 2.7K 0.25W = 1 pcs.
- R11,R12 = 5.6K 0.5W = 2 pcs.
- R13,R17 = 8.2K 0.5W = 2 pcs.
- R14,R15,R16 = 10K 0.5W = 3 pcs.
- R19 = 330 ohms = 1 pcs.
- VR1 = 10K potentiometer = 1 pcs.
- C6 = 470pF 50V = 1pcs.
- C2,C7 = 0.1uF 100V = 2 pcs.
- C1 = 2200uF 63V = 1 pcs.
- C3 = 47uF 50V = 1 pcs.
- C4,C5 = 10uF 50V = 2 pcs.
- C8 = 100uF 63V = 1 pcs.
- SW1_____Reset switch normally open pushbutton_____= 1 pcs. PCB,wires,heatsink,nut,screw,and other.
Description
Circuit schematic like shown in Figure 1 above is Circuit Schematic of DC 0-50V at 3A Variable Power Supply with Short Circuit Protection using LM723 IC. Eleccircuit site describe that the AC-voltage from the transformer-T1 flows through diode D1-D4 to the rectifier to DC voltage. Second, capacitor-C1 filters that pulsed DC voltage to smooth, before sent through R1, R2 into TR5.
And there are IC1 is used to control a voltage at OUT point by adjusting VR1 can adjust voltage between 0-50 volts. Two resistors R1 and R2 limit the overload current. They work together with two transistors TR1, TR2.
When the current exceeded, TR1 and TR2 will work. Then, there is an output voltage at lead E of TR2 through LED1 into 2 pins of IC1. LED1 is an alarm display. Thus the circuit stops to provide voltage to the output. We need to use normal load current that under lower than 3A. After that, press the switch-SW1 to reset the system to restart working circuit again.
And there are IC1 is used to control a voltage at OUT point by adjusting VR1 can adjust voltage between 0-50 volts. Two resistors R1 and R2 limit the overload current. They work together with two transistors TR1, TR2.
When the current exceeded, TR1 and TR2 will work. Then, there is an output voltage at lead E of TR2 through LED1 into 2 pins of IC1. LED1 is an alarm display. Thus the circuit stops to provide voltage to the output. We need to use normal load current that under lower than 3A. After that, press the switch-SW1 to reset the system to restart working circuit again.
And now you can read more you knowledge about circuit schematic of DC 0-50V at 3A Variable Power Supply with Short Circuit Protection using LM723 IC from the original source article using link [here].
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