fbpx
20.5 C
Sydney
Sunday, November 17, 2024

Buy now

  • HIKVISION AX PRO
  • HID SIGNO
  • HIKVISION NVR
HomeSecurity CamerasCCTVCould Old Tube CCTV Cameras Be Disabled by Impact, Explosion?

Could Old Tube CCTV Cameras Be Disabled by Impact, Explosion?

Category:
20.5 C
Sydney
20.5 C
Brisbane
18.6 C
Canberra
16.3 C
Melbourne

RECOMMENDED

WEATHER

Sydney
overcast clouds
20.6 ° C
21.4 °
19.9 °
82 %
2.2kmh
91 %
Sat
21 °
Sun
26 °
Mon
25 °
Tue
20 °
Wed
21 °

Latest Articles

STAY CONNECTED

2,460FansLike
1,475FollowersFollow
0FollowersFollow
Bookmark
Page is Bookmarked

Yes, apparently the old Vidicon tube cameras commonly installed in banks prior to the development of metal–oxide–semiconductor field-effect transistor (CCD) cameras could be disabled by impacts – including being hit by a shoe.

Video camera tubes used a cathode ray (electrons moving through a vacuum) tube in which a cathode ray was scanned across an image of the scene and the resultant current varied depending on the brightness of the target image on the target. Because the size of the striking ray was tiny compared to the target, the system delivered 576 lines in PAL.

The optical system of the tube camera’s image dissector focused an image onto a photocathode mounted inside a high vacuum. As light struck the photocathode, electrons were emitted in proportion to the intensity of the light reflecting from the scene. The entire electron image is deflected horizontally and vertically periodically so the image is scanned multiple times per second and a scanning aperture permits only those electrons emanating from a very small area of the photocathode to be captured by the detector at any given time.

Taken as a whole, CRT was a robust and long-lived technology, though it wasted most its current draw and CRT monitors are highly toxic (lead coated glass) and hard to recycle into anything other than more CRT monitors.

#sen.news #cctv #tubecameras

AUTHOR

SEN News
SEN Newshttps://sen.news
Security & Electronics Networks - Leading the Security Industry with News and Latest Events. Providing information and pre-release updates on the latest tech and bringing it all to you daily. SEN News has been in print for over 20 years and has grown strong as a worldwide resource in digital media.

LEAVE A REPLY

Please enter your comment!
Please enter your name here