Thyristors Page of Learning about Electronics

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Thyristors
Silicon-controlled Rectifiers (SCRs)
SCR Characteristics
What is a Silicon-Controlled Rectifier?
SCR Datasheet Specifications- Explained
Concepts
What is the Difference Between a Silicon-controlled Rectifier and a Triac?

Circuits
How to Build a Very Basic SCR Circuit
SCR Latching Switch Circuit

SCR Alarm Circuits
How to Build a Motion Detector Alarm Circuit
How to Build a Vibration Alarm Circuit
How to Build a Light Alarm Circuit
How to Build a Heat Alarm Circuit
How to Build a Tilt Alarm Circuit
How to Build a Door Alarm Circuit