(19)
(11)EP 0 307 465 A1

(12)

(43)Date of publication:
22.03.1989 Bulletin 1989/12

(21)Application number: 88903670.0

(22)Date of filing:  23.03.1988
(51)International Patent Classification (IPC): 
H03G 5/ 02( . )
G10H 3/ 18( . )
H03G 7/ 00( . )
G10H 1/ 16( . )
H03F 1/ 32( . )
H03G 11/ 04( . )
(86)International application number:
PCT/US1988/001025
(87)International publication number:
WO 1988/007787 (06.10.1988 Gazette  1988/22)
(84)Designated Contracting States:
CH DE FR GB IT LI SE

(30)Priority: 23.03.1987 US 19870029144

(71)Applicant: PRITCHARD, Eric K.
Bowie, MD 20716 (US)

(72)Inventor:
  • PRITCHARD, Eric K.
    Bowie, MD 20716 (US)

(74)Representative: Strehl Schübel-Hopf Groening & Partner 
Maximilianstrasse 54
D-80538 München
D-80538 München (DE)

  


(54)SEMICONDUCTOR EMULATION OF TUBE AMPLIFIERS