... circuit consists of gas discharging tube,piezo resistance and clamping diode. LYX-R/L Surge Protection has two-stage circuit ... consists of gas discharging tube,piezo resistance and clamping diode.1.LYX-R/L surge protector protect un-earthed ... circuit consists of gas discharging tube, piezore-sistance and clamping diode, with advantages of large discharging capacity, short clamping time and ...