Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Plural load device systems
Patent
1976-08-09
1978-06-13
Hix, L. T.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Plural load device systems
354145, 354295, 315241P, 362 7, G03B 1502
Patent
active
040952452
ABSTRACT:
An adapter for electronic flash apparatus comprises a pair of first external connection terminals detachably connected to high tension pulse takeout terminals of a camera incorporating means for generating the high tension pulse in response to the action of the shutter of the camera; and a pair of second external connection terminals detachably connected to a pair of terminals of a trigger circuit included in an electronic flash apparatus or unit which further comprises a power supply and a flash discharge lamp supplied with the power supply voltage and in which the trigger circuit is supplied with the supply voltage between the trigger circuit terminals to start the flash discharge lamp when the pair of terminals of the trigger circuit is short circuited. The adapter further includes an electronic flash unit control circuit which comprises a cold cathode thyratron to be made conductive in synchronism with the high tension pulse generation and is adapted to make a substantial short circuit between the terminals of the trigger circuit in synchronism with the conduction or a predetermined time period after the conduction.
REFERENCES:
patent: 2576934 (1951-12-01), Grier
patent: 3614918 (1971-10-01), Hennig et al.
patent: 3727100 (1973-04-01), Kuraishi et al.
patent: 3731605 (1973-05-01), Kitagawa
patent: 3852790 (1974-12-01), Robinson
patent: 3858227 (1974-12-01), Ellin et al.
patent: 3894226 (1975-07-01), Hanson
patent: 3969737 (1976-07-01), Kendrick
Hix L. T,.
Perkey William B.
Toshiba Photo Products Co., Ltd.
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