Patent ID: 7566839

Claim:
A pulse-current generator comprising: a contact-breaker device comprising: a pair of fixed terminals secured on a supporting member at positions spaced apart from each other, and a movable member capable of moving relative to the pair of fixed terminals and coming into or avoiding contact with the pair of fixed terminals based on its movement, thereby causing electrical conduction or insulation between the fixed terminals, wherein the movable member moves irregularly in accordance with externally applied vibration, thereby causing irregular electrical conduction or insulation between the fixed terminals; a power source connected to the contact-breaker device to supply an electric current to the contact-breaker device; a contact electrode for controlling the supply of the electric current to the contact-breaker device; and an indicator that operates based on an electric current supplied from the power source, wherein the contact electrode includes a pair of terminals spaced apart from each other; and when the pair of terminals comes into contact with a conductive object, the electric current is supplied to the contact-breaker device; and when at least either one of the pair of terminals moves away from the object, the supply of the electric current to the contact-breaker device is stopped, the contact-breaker device and the indicator are connected in parallel to the power source, and the indicator operates when a current path including the contact-breaker device is broken, and the indicator stops operating when the current path including the contact-breaker device is formed.