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Master EV Charger, Inverter & Industrial PCB Repair

Practical HD video courses, interactive PDF circuit schematics, and live technician group chat for electronics repair technicians.

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In-App Purchase Enabled

Course Catalog & Direct Purchase

Unlock lifetime access to HD video tutorials, component testing guides, and paid student group chat.

EV Charger Repair Course EV Special
Master Electronics Team

Complete EV Battery Charger & Controller Repair Masterclass

Learn 48V, 60V, 72V EV charger power supply troubleshooting, MOSFET switching failure diagnosis, and PWM IC testing.

Course Fee ₹2,499
Welding Machine Repair Inverter Tech
Santra Technical Division

ARC & TIG Welding Machine Inverter Circuit Repair Guide

IGBT driver board troubleshooting, high frequency transformer testing, current feedback sensor repairs.

Course Fee ₹1,999
Industrial PCB Repair PCB Tracing
Senior PCB Engineer

Industrial PCB Tracing, Multimeter & Oscilloscope Testing

Trace complex multi-layer PCBs without schematic diagrams using voltage drop measurement and frequency analysis.

Course Fee ₹1,499

Circuit Diagram & PDF Library

Pinch-to-zoom HD schematics for pinouts, multimeter testing points, and component ratings.

48V EV Charger Full Circuit Diagram

28 Pages • High Res Schematics

Inverter Welding Machine PCB Schematic

18 Pages • Component Values

E-Rickshaw Controller Pinout & Testing Manual

32 Pages • Voltage Points

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Santra Institute strictly follows all Google Play Store developer guidelines regarding In-App Purchases, User Data Safety, and Ad-Free Content.

Google Play Billing Integrated

All digital course & PDF purchases inside the Android mobile app are processed via Google Play In-App Billing system (`in_app_purchase`).

100% Ad-Free Experience

Santra Institute contains zero third-party ads (No AdMob, No banner ads, No interstitial popups). Students enjoy a distraction-free technical learning environment.

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Users can request complete data & account deletion at any time in compliance with Google Play User Data Safety guidelines.

Official Android Application

Download Santra Institute App for Android

Get instant mobile access to video courses, offline PDF schematics viewer, community discussion feed, and paid student group chat.

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Santra Institute

EV & PCB Repair

No Ads • Play Store Ready