How do I use a generator as my circuit power source?
I have a simple circuit set up with a two resistors, all connected by copper wires. How can I “connect” my generator to the circuit to allow it to serve as a power source? Do I need a specific cable? I plugged in one end of a BNC cable into my generator output terminal, but I’m not quite sure what to do with the other end. How can I “connect” this end to my two copper wires? Kind of confused here.
Please help! It’s for extra credit!
the center wire on the BNC is the power and the outer part is the ground for this case
try to find a BNC connector, that would be the best way
hook the connector to your circuit then the BNC to the connector
Four Channel Embedded Digital Video Recorder -NTSC
If you’re after the highest standards in DVR equipment to look after assets or family then here it is, an excellent 4 channel DVR with Preview LCD, internal HDD capability and USB connectivity. You’ll be impressed from the get-go after you simply install your own 3.5 inch HDD (up to 200GB), and easily connect your cameras. From here this unit switches into top gear, with dual monitor outputs, an s-video output (ideal for a TV), sensor inputs and an alarm output. Recording is possible on all channels simultaneously and in a number of different profiles so you can go all out for quality or step the resolution and frame rate down a bit for maximum recording times. All these features packed into a small, actively cooled (50mm fan) rugged steel enclosure.
A powerful and but discreet product and an all-time great seller get yours today from Chinavasion at great wholesale prices with no MOQ.
Note: This unit does not come with a hard disk drive you will need to purchase this separately.
Manufacturer Specifications
1.5 Inch TFT LCD Screen
Recording Format: MPEG -AVI
Recording Quality: Low, Normal, High
Default Frame Rate Settings: NTSC: 30 Frames per Second
Recording Frame Rates: Frames per Second – 30, 15, 10, 7, 5, 4, 3, 2, 1
Inputs: - 4 Channel BNC (RCA with Small Adaptors) Video Camera Input - 4 Motion Sensor/ Trigger Inputs
Outputs: - 4 Channel Camera Loop Back - 1 Alarm Output - 2 BNC (RCA with Small Adapters) Monitor Outputs - S-Video Output - USB Output for PC link
Power Source: 12 V DC
Dimensions: 290mm x 220mm x 52mm (L x W x H)
Manufacturer Ref: GYW468E5P2Q9
Product Notes
Local PC monitoring and backup via USB- no need to take out the hard disk
Password Protection- video captures will be safe from accidental erasure/ tampering
Tough Stackable Casing
Internal Alarm When Video Signal Lost
Power Failure Protection, Automatic Restart
Stand-Alone Operation not effected by PC Viruses etc.
You will find much more.
Current Reviews: This product was added to our catalog on Wednesday 18 June, 2008. About the Author
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BNC Female to RCA Male Plug Adapter for CCTV Security Camera JR-BNCRCA1 from Dinodirect.com
HDTV cables are conduits of HDTV transmissions. There are two kinds of HDTV connections: analog or digital. Various HDTV cables are used for these connections. They should be of good quality and well installed to guarantee a fully reliable system.
Analog HDTV cables
Analog HDTV signals are either RGB (usually RGBHV) or component video (Y/Pb/Pr).
Component connections are made using RCA connectors. These connectors transfer SDTV NSTC signals from external devices such as DVD or VHS to HDTV displays. Component cables are usually color coded: green for Y, blue for Pb and red for Pr. Audio cables are also color-coded: red for Right audio and white for Left audio.
Seventy-five (75) ohm video coaxial cables are suitable for these applications. These HDTV cables end with RCA plugs, BNCs or VGA monitor plugs.
HDTV analog signals are ten times stronger than NTSC. HDTV signals scale up to 35 MHz while NTSC reaches only up to 3.5 MHz. It is important that HDTV cables which connect devices together maintain a consistent impedance of 75 ohms. HDTV cables which do not meet proper specifications will cause ghosting or “ringing” of projected images because portions of the signal issues back and forth within the cable instead of being smoothly delivered to the screen.
Before purchasing analog HDTV cables, make sure that the device has been sweep-tested at least up to 105 MHz. Also, check that the impedance tolerance is 75 ohms within +/- 1.5 ohms.
Digital HDTV cables
Digital HDTV cables exist in SDI or Serial Digital Interface. However, this very strong cable is still commercially unavailable. In the market are the DVI (Digital Visual Interface) and HDMI (High-Definition Multimedia Interface ).
Bi-directional connection between computers and monitors is possible through dual-channel versions of DVI. These connections carry only video. Audio must be carried by other HDTV cables.
HDMI carries digital uncompressed audio between devices such as an STB and a display. Smaller connectors are used with HDMI. The HDMI HDTV cable allows for bi-directional interface also. HDMI uses a 19 pin connector for single link or a larger 29 pin connector for dual link.
Cables to interconnect DVI and HDMI devices are also available.
DVI and HDMI are characterized by very short cable lengths because they designed to house a copy-protection scheme. Digital HDTV cables use twisted-pair cable not coaxial cables which analog HDTV cables use. DVI and HDMI work without problems over short distances but some low-quality cables falter beyond ten feet.
Practically no digital HDTV cable works beyond fifty feet. Pre-formed DVI cables up to 10 ft. in length are available. Longer lengths require specialized materials and are expensive. Although digital interconnections produce highest video and audio quality, running over long distances is the limitation of digital HDTV cables.
Other cables
S-Video Cables. are used in some televisions to improve picture quality of NTSC signals. Audio must be interconnected separately using RCA cables. S-Video cables are available in any length.
F Cables are coaxial cables with F-connectors used to connect to antennas or satellite dishes to the TV cable system. Several possible cables are selected depending on the length needed. RG-59 is acceptable for short lengths but a low-loss cable is needed for roof-top antennas.
Mini DB 15 RGB Monitor Cables are used to connect PC to HDTV displays with analog RGB interfaces. These cables extend up to 5 meters. Special cables are needed beyond this length. Screw locks secure the connectors to warrant a firm connection.
Firewire/1394 is designed for digital video connections. Audio and video are carried together. The four pin version is the most common but six pin versions are also available for some devices. Prefabricated HDTV cables like these are up to 3 meters.
Dolby Digital audio in SPDIF format is frequently transmitted in optical form. Fiber link, an optical fiber cable which is also called “optical audio output cable”, may be employed to send these transmissions to the decoder in the audio system. Excessive bending or twisting of these cables must be avoided as not to break the fiber inside.
