<PAGE>   1
                                   EXHIBIT 24

                                POWER OF ATTORNEY


    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997, hereby constitutes and appoints ROBERT S. REITMAN with full
power of substitution and resubstitution, as attorney to sign for the
undersigned and in my name, place and stead, as Director of said corporation,
said Annual Report and any and all amendments and exhibits thereto, and any and
all applications and documents to be filed with the Securities and Exchange
Commission pertaining to such Annual Report, with full power and authority to do
and perform any and all acts and things whatsoever requisite, necessary or
advisable to be done in the premises, as fully and for all intents and purposes
as the undersigned could do if personally present, hereby approving the acts of
said attorney, and any of them and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 26th day of March,
1997.


                                   /s/ James H. Berick
                                  -------------------------------
                                  James H. Berick
<PAGE>   2
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997 hereby constitutes and appoints ROBERT S. REITMAN and JAMES H.
BERICK, and each of them, with full power of substitution and resubstitution, as
attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 26th day of March,
1997.


                                   /s/ Joseph A. Campanella
                                  ---------------------------------
                                  Joseph A. Campanella


<PAGE>   3
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997 hereby constitutes and appoints ROBERT S. REITMAN and JAMES H.
BERICK, and each of them, with full power of substitution and resubstitution, as
attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 14th day of April,
1997.




                                   /s/ David J. Golden
                                  ---------------------------------
                                  David J. Golden


<PAGE>   4
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997, hereby constitutes and appoints ROBERT S. REITMAN and JAMES
H. BERICK, and each of them, with full power of substitution and resubstitution,
as attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of April, 1997.


                                   /s/ Steven W. Percy
                                  ---------------------------------
                                  Steven W. Percy


<PAGE>   5
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997, hereby constitutes and appoints ROBERT S. REITMAN and JAMES
H. BERICK, and each of them, with full power of substitution and resubstitution,
as attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 26th day of March,
1997.


                                   /s/ Morton L. Reitman
                                  ---------------------------------
                                  Morton L. Reitman


<PAGE>   6
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997, hereby constitutes and appoints ROBERT S. REITMAN and JAMES
H. BERICK, and each of them, with full power of substitution and resubstitution,
as attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 27th day of March,
1997.


                                   /s/ Sylvia K. Reitman
                                  ---------------------------------
                                  Sylvia K. Reitman


<PAGE>   7
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997, hereby constitutes and appoints ROBERT S. REITMAN and JAMES
H. BERICK, and each of them, with full power of substitution and resubstitution,
as attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 6th day of April, 1997.


                                   /s/ Thomas S. Robertson
                                  ---------------------------------
                                  Thomas S. Robertson


<PAGE>   8
                                POWER OF ATTORNEY



    The undersigned Director of The Tranzonic Companies, an Ohio corporation,
which corporation anticipates filing with the Securities and Exchange
Commission, Washington, D.C., under the provisions of the Securities Exchange
Act of 1934, as amended, an Annual Report on Form 10-K for the year ended
February 28, 1997 hereby constitutes and appoints ROBERT S. REITMAN and JAMES H.
BERICK, and each of them, with full power of substitution and resubstitution, as
attorneys or attorney to sign for the undersigned and in my name, place and
stead, as Director of said corporation, said Annual Report and any and all
amendments and exhibits thereto, and any and all applications and documents to
be filed with the Securities and Exchange Commission pertaining to such Annual
Report, with full power and authority to do and perform any and all acts and
things whatsoever requisite, necessary or advisable to be done in the premises,
as fully and for all intents and purposes as the undersigned could do if
personally present, hereby approving the acts of said attorneys, and any of them
and any such substitute.

    IN WITNESS WHEREOF, I have hereunto set my hand this 14th day of April,
1997.


                                   /s/ James C. Spira
                                  ---------------------------------
                                 James C. Spira