Spark gap for ignition distributor testing appts. - forms measuring mark characteristic for HV incidence, and has spark gap capillary

摘要

The device detects present high voltage and marks the time point at which this voltage appears. For this purpose a measuring division is formed in relation to a given scale. The measuring division is formed by a spark gap (10) with two electrodes (12, 13) between which the spark path extends through a linear capillary tube (14). By this arrangement the break over spark can be used as a measuring division in ignition distributor testing stations, in order to mark ceratin angular positions of the distributor shaft on a scale. Preferably the spark gap is formed by a glass tube (11), in which the electrodes are sealed or cemented, while the capillary is formed by a restriction of the glass tube inner space.