EP 0425736 B1 19950719 - Triggered commutation spark gap.
Title (en)
Triggered commutation spark gap.
Title (de)
Triggerbare Schaltfunkenstrecke.
Title (fr)
Eclateur de commutation déclenchable.
Publication
Application
Priority
EP 89250072 A 19891102
Abstract (en)
[origin: EP0425736A1] The triggered commutation spark gap consists of two main electrodes, which are insulated from one another, and a trigger electrode which can be driven galvanically and is arranged in the centre of a circular opening in the one main electrode. According to the invention, the distance (a) between the two main electrodes (2, 3) is greater by a factor of 1.1 to 2.3, preferably by a factor of 1.4 to 1.7, than the width (b) of the annular gap (10) between the trigger electrode (6) and the associated main electrode (3); in addition, the circumferential edge of the trigger electrode which is arranged flush with the discharge surface of the associated main electrode has a radius of curvature of less than or equal to 0.1 mm, and the trigger electrode (6) and the associated main electrode (3) are coated with an activation compound (11) containing silver. As a result of the combination of these measures, the delay time of the commutation spark gap can be reduced to values of less than or equal to 0.5 mu s. <IMAGE>
IPC 1-7
IPC 8 full level
H01T 2/02 (2006.01)
CPC (source: EP US)
H01T 2/02 (2013.01 - EP US)
Citation (examination)
Prospekt "EEV Spark Gaps For Voltage Surge Protection And High Energy Pulsed Switching" der Fa. EEV
Designated contracting state (EPC)
CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0425736 A1 19910508; EP 0425736 B1 19950719; DE 58909356 D1 19950824; ES 2076204 T3 19951101; JP 2873077 B2 19990324; JP H03156874 A 19910704; US 5151630 A 19920929
DOCDB simple family (application)
EP 89250072 A 19891102; DE 58909356 T 19891102; ES 89250072 T 19891102; JP 29517690 A 19901030; US 60615090 A 19901031