| 摘要 |
1527105 Photographic flash device ASAHI KOGAKU KOGYO KK 30 Sept 1975 [30 Sept 1974] 10095/78 Divided out of 1527104 Headings G2A and G2X A flash device has an exposure control circuit, a manually adjustable exposure parameter setting resistance (RF), Fig. 2 (not shown), a switch e' d' normally connecting this resistance (RF) to an input of the circuit, a socket B, and a plug Q which, when inserted into the socket B, opens the switch e' d' and connects a contact 30' in the plug Q to the input of the circuit. As shown, when the plug Q is inserted into socket B and a plug P is inserted into a camera Figs. 5, 6 (not shown) the resistance (RF) in the flash device is disconnected from the flash control circuit and contact 30' connects in a similar resistance (RF), Fig. 1 (not shown) located in the camera. If the camera does not have such a resistance, then plug Q is used for the camera and plug P for the flash device. This serves just to connect flash synch. circuit contacts b' c' to the camera, the switch e' d' remaining closed. Instead of using the reversible coupling of Fig. 7, two alternatively useable couplings Figs. 10, 11 (not shown) may be provided. |
