Surface potentiometer having plurality of probes

Abstract

Abstract PURPOSE: To sequentially enable to measure the surface potential for a plurality of parts with one main body without moving the probes, by connecting a plurality of probes to the main body constituting the surface potential and providing the selection circuit selectively inputting the detection signal of an arbitrary probe among a plurality of probes to the said main body. CONSTITUTION: A plurality of probes P 1 WP n are connected to the fixed terminals S 1 WS n of the selection circuit 2 consisting of the analog multiplexer and electromagnetic relays of the surface potentiometer main body 1, and the signal processing circuit C processing the detection signal in response to the surface potential detected with the probes P 1 WP n is connected to the selection terminal T of the circuit 2. With the said constitution, when the surface potentials V 1 WV n are measrued with the parts of plurality 3aW3n of measured body 3, one of the probes P 1 WP n corresponding to the measuring parts 3aW3n is selected with the selection of the terminal T of the circuit 2 by the signal from the control circuit 4 to sequentially measure the surface potential. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Minoru Aoki

Bibliographic Details