Agar aap electronics ya mobile repairing seekh rahe hain, toh Multi-meter aapka sabse bada dost hai. Is tool ke bina kisi bhi circuit board (PCB) ko troubleshoot karna namumkin hai. Aaj ke is post mein hum baat karenge ki ek digital multi-meter ko basic testing ke liye kaise istemaal kiya jata hai.
1. Multi-meter Ke Basic Parts
Kisi bhi multi-meter mein mukhyata teen cheezein hoti hain:
- Display Screen: Jahan aapko voltage, current, ya resistance ki numeric value dikhti hai.
- Selection Knob: Is rotary switch se aap chun sakte hain ki aapko kya measure karna hai (DC Voltage, AC Voltage, ya Continuity).
- Probs (Wires): Isme do wires hoti hain—Black (Common/Negative) aur Red (Positive).
2. Sabse Jyada Use Hone Waale Modes
Mobile aur computer repair mein hume sabse jyada niche diye gaye modes ki jaroorat padti hai:
A. Continuity ya Diode Mode 🔊
Is mode ka istemaal circuit mein break (toota hua track) check karne ke liye hota hai.
- Jab aap dono probs ko aapas mein touch karenge, toh ek BEEP ki aawaz aayegi.
- Agar track sahi hai, toh beep bajegi; agar track beech se break hai, toh koi sound nahi aayega.
B. DC Voltage Mode (⎓ V)
Mobile ki battery aur components hamesha DC current par kaam karte hain.
- Mobile battery check karne ke liye knob ko 20V DC par set karein.
- Ek sahi battery lagbhag 3.7V se 4.2V ke beech ka voltage dikhayegi.
3. Safe Repairing Ke Liye Kuch Tips
Important Note: Kabhi bhi live high-voltage AC circuit (jaise ghar ke main switch board) ko bina proper knowledge ke touch na karein. Mobile repairing mein hum sirf low DC voltage (max 5V-20V) par kaam karte hain, jo safe hai.
- Hamesha black probe ko COM jack mein hi lagakar rakhein.
- Testing khatam hone ke baad multi-meter ko OFF karna na bhoolein, nahi toh battery drain ho jayegi.
Conclusion
Multi-meter chalana koi mushkil kaam nahi hai, bas thodi practice ki jaroorat hai. Agli post mein hum seekhenge ki motherboard par lage capacitor aur resistor ko kaise check karte hain.
Aapko yeh jankari kaisi lagi? Comment karke jaroor batayein!
