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Turn ON method &
Firing Circuit of SCR
MODULE 2
SILICON CONTROLLED
RECTIIER
TURN ON & FIRING CIRCUITS OF SCR
TURN ON & FIRING CIRCUITS OF SCR
TURN ON & FIRING CIRCUITS OF SCR
• http://www.completepowerelectronics.com/scr-thyristor-switching-characteristics/
Turn ON methods of SCR
• Forward Voltage Triggering
• Thermal (Temperature) Triggering
• Light Triggering
•
𝑑𝑣
𝑑𝑡
Triggering
• Gate Triggering
Firing Circuits of SCR
• R
• RC
• UJT
Resistance Firing circuit
Resistance-Capacitance Firing circuit
Resistance-Capacitance Firing circuit- FW
UJT Firing Circuit
UJT (RAMP)
PEDESTEL CIRCUIT
BOOKS
• M.D. Singh and K. B. Khanchandani, “Power Electronics”, Tata
Mcgraw Hill
• Page No. 83,85-86,89 – Firing Circuits
• Page No. 33-35- Turn on methods
• Home Work: Dynamic Characteristic of SCR
• Page No. 35-37
PracticeWaveform
DAY 3 END
Thankyou

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TURN ON & FIRING CIRCUITS OF SCR

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