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| Overload Circuit for power supply |
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| The mean of Over load circuit for power supply in this circuit is circuit which protect power supply from user over current |
| For method is used overload circuit open load when over current or short circuit |
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Figure 1.Schematics of Over load circuit for power supply |
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| In figure 1 show Schematics of Over load circuit for power supply which we separate are 3 section :1 Current detect ; 2 Relay control ; 3 Over load display |
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| 1: Current detect Section |
| Current detect section including R5,R6,VR1 and T3 .The value of R5 depend on power of power supply which we can calculate from |
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R5=(0.7/If) |
IF : Peak current of power supplty |
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| 2 : Relay control Section |
| Relay control section including T1,R1,D1 and RY Which T1 is swicth control relay . When over load T3 will conduct current at pin B of T1 .So T1 Stop relay will open |
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| 3 : Over load display Section |
| Over load display Section including R2,R3,LED1 and Q2 |
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