Re: Problem with parts

[Sergey <skis...@gmail.com>]

Martin,

Most (but not all) resistor arrays used in N8VEM boards are so called
"bussed" type arrays. In this type of resistor arrays all resistors
are connected together with the first terminal (and to the pin 1 of
the package), the other terminal of each resistor is connected to the
individual pin of the package.

Probably pictures will explain it better than I do.

Here is how the schematic of a bussed resistor array looks like:
http://www.8051projects.net/e107_files/public/1218310241_1329_FT11567_resistor_sip_.jpg
Your resistor array made of discrete resistors will look something
like this: http://www.sv-components.com/Photos/Resistor%20NW%20SIP.jpg

Usually, but not always, all resistors in the array have the same
value, so for example a 4.7K SIP-6 resistor array will have five 4.7K
resistors (package has one more pin - the common terminal for all
resistors). 4.7K SIP-10 will have nine 4.7K resistors, and so on.

Other popular types of resistor arrays are:
- Isolated resistors (just a several unconnected resistors in one
package). They are convenient to use where many resistors of the same
value are required (e.g. limiting LED current when driving a 7-segment
LED display).
- Resistor ladder. These are sometimes used to implement digital to
analog converters (DACs).

Hope this helps,
Sergey

On Feb 8, 2:49 pm, Martin Boháč <bohacm...@gmail.com> wrote:
> Yeah but i am not really good at this :)
> I think that i can use five 200 Ohms resistors ?