Sammy L. Crane
Engineering at Country Clb Rd, Garland, TX
License number
Louisiana PE.0008907
Issued Date
Jan 1, 1900
Category
Civil Engineer
Type
Electrical and Computer Engineer
Address
Address
2833 S Country Club Rd, Garland, TX 75043
Professional information
Voltage Supply Including Bilateral Attenuator
US Patent:
4044249, Aug 23, 1977
Filed:
Dec 15, 1975
Appl. No.:
5/640687
Inventors:
Charles E. Moore - Garland TX
Sammy L. Crane - Garland TX
Donald L. Lipke - Garland TX
Sammy L. Crane - Garland TX
Donald L. Lipke - Garland TX
International Classification:
H01J 3912
US Classification:
250213VT
Abstract:
The specification discloses a voltage supply system particularly adapted for use as an automatic brightness control for an image intensifier tube. The system includes a power oscillator for applying a constant A. C. voltage to a first multiplier which generates at least one constant D. C. voltage for application to the screen of the image intensifier tube. A regulator circuit includes a low power oscillator which generates a control A. C. signal and which further includes circuitry responsive to the screen current of the image intensifier tube for varying the amplitude of the control A. C. signal. The frequency of the control A. C. signal is substantially greater than the frequency of the constant A. C. voltage. A bilateral attenuator receives the constant A. C. voltage and is operable in response to the control A. C.