Method for maximizing the solar cell OPTO-electronic conversion

Details Method for maximizing the solar cell OPTO-electronic conversion Method for maximizing the solar cell OPTO-electronic conversion

1994-09-23

1996-08-06

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

250221, 250214LS, 359171, 327 47, G02B 2700

Patent

active

055436277

ABSTRACT:
A method for optically powering and controlling a hydraulic actuator in which the electrohydraulic servo valve is powered and controlled by a solar cell, with incident light at optimum level, but frequency-modulated at low amplitude, allowing optimum impedance matching to the servo valve solenoids. The signal is F.M. detected using a discriminator, which outputs are applied to the bases of two transistors in series with the electrohydraulic servo valve solenoids. The nearly constant output impedance of the solar cell or a follow-up amplifier allows optimum performance of the discriminator. The unique feature is the operation of the solar cell at a light level which is optimum for efficiency of the system.

REFERENCES:
patent: 3612882 (1971-10-01), Sheppard
patent: 4132378 (1979-01-01), Stevens
patent: 4306314 (1981-12-01), Griffiths
patent: 4443853 (1984-04-01), Maciolek et al.
patent: 4594556 (1986-06-01), Ohta
patent: 4651045 (1987-03-01), Wagner
patent: 4660589 (1987-04-01), Bartholomew
patent: 4716399 (1987-12-01), Nordlund
patent: 4742678 (1988-05-01), Bartholomew et al.
patent: 4931635 (1990-06-01), Toyama
patent: 5033694 (1991-07-01), Sato
patent: 5044155 (1991-09-01), Zimmerman
patent: 5085125 (1992-02-01), Emo et al.
patent: 5301053 (1994-04-01), Shikada

Affiliated with

Also associated with

Rating

Method for maximizing the solar cell OPTO-electronic conversion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for maximizing the solar cell OPTO-electronic conversion , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for maximizing the solar cell OPTO-electronic conversion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2192702