EXHIBIT 23(b) Arthur Andersen LLP CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS To Thermo Voltek Corp.: As independent public accountants, we hereby consent to the incorporation by reference in this registration statement of our report dated February 7, 1996 included in Thermo Voltek Corp.'s Form 10-K for the year ended December 30, 1995, and to all references to our firm included in this registration statement. Arthur Andersen LLP Boston, Massachusetts