Quick question about resistor substitution on a buffer build

[Belanger]

Ok so it calls for a 2.2m resistor and I don't have it.  If I use two 4.7m resistors in series to give 2.35m will I be ok or is that not close enough

[whoisalhedges]

Two 4.7M resistors in series will give you 9.4M of resistasnce.

Two 4.7M resistors in parallel, you'll be just fine. With the caveat that I don't know what circuit you're building; but I usually see 2.2M setting the bias, in negative feedback, stuff like that - and you don't really need 1% tolerance there.

[GGBB]

Depending on what the resistor in question does, a 4.7M alone might be just fine. Schematic?

[GiovannyS10]

Balanger, is like whoisalhedges said. Take care.. If you put two 4M7 in serie you will have 9M4 ohms... Its too much than the original schematic... If you use it in parallel you will have a too close value, and seems it will not bring you any problem... Take a special care if this resistor come before a transistor. For new questions, please post the schematic and we will can help you better.

Good luck.

The calc.

Parallel
r1*r2/r1+r2=req

4,7 * 4,7 /4,7+4,7  = 22,09/9,4 = 2M3

Serie
r1+r2=req

4,7+4,7=9M4