Circuit for detecting charged voltage of electronic flash

Details Circuit for detecting charged voltage of electronic flash Circuit for detecting charged voltage of electronic flash

1984-09-05

1986-12-23

Adams, Russell E.

35412712, G03B 1505

Patent

active

046309160

ABSTRACT:
A voltage dividing circuit containing a switching element is connected in parallel with a main capacitor of which a highly charged voltage is applied to a flash lamp for flashing. Only when the switching element is turned on does the voltage dividing circuit produce a divided voltage. The divided voltage is compared with a reference voltage. The result of the comparison is used for detecting the charged voltage across the main capacitor.

REFERENCES:
patent: 4096492 (1978-06-01), Land et al.
patent: 4126872 (1978-11-01), Yazaki et al.
patent: 4348087 (1982-09-01), Ellin et al.
patent: 4354750 (1982-10-01), Hasegawa et al.
patent: 4464609 (1984-08-01), Nakamura et al.
patent: 4491405 (1985-01-01), Tsuruta
patent: 4542975 (1985-09-01), Ishida et al.

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