201227 ⎘
Non-adjustable resistors consisting of loose powdered or granular conducting, or powdered or granular semi-conducting material Overvoltage protection resistors; Arresters
METHOD AND APPARATUS FOR LIMITING LIGHTNING OVERVOLTAGE OF DIRECT-CURRENT POWER TRANSMISSION LINE
#2Surge protection circuit, lightning protector and electronic device
#3Externally gapped line arrester
#4Transmitting and receiving circuit
#5Tensioning device for a surge arrester, production method and surge arrester
#6Overvoltage protection devices including wafer of varistor material