UPTIN 419.       Light intensity control using SCR
UPTIN 420.       Phase control using SCR
UPTIN 421.       Study of half and full wave rectifer using SCRs
UPTIN 422.       Light intensity control using triac
UPTIN 423.      
Phase control using traic
UPTIN 424.       Study of switching action of a trasistor
Power Electronic Lab. Training Boards
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