new builder - - - resistor question

[hangwire]

Ok, so I have all the parts to make a GGG Ring Dinger... but I couldn't find 2 resistors ... a person sent me resistors that added up the the correct value... can I just solder them together?  if so... do they "flow" a certain way that I have to make sure to solder them the right way?

any replies will be appreciated... thanks!

[MartyB]

Nope, no polarity with resistors - just solder ends together.

[hangwire]

so... I have not built anything before ... but does that mean if multiple resistors are comming after each other in a layout ... I could in theory just get a 456Mk ohm resistor for all of them??? 

it should be fun... I am going to perfboard and just twist wire between parts to make sure it works.... then solder and drilling


side question... to drill this enclosure... I probably need to by "metal drill bits"  right?  I can't imagine the bits I use for wood drilling, working...

[MartyB]

If you have several resistors end-to-end, that's referred to as "resistors in series".  The total resistance from one end of a series to the other will equal the sum of the individual resistors.    Be careful about totalling resistor valuess from a schematic in an effort to simplify your build.  Usually that won't be possible.  But if you don't have resistor value 'x' it's ok to substitute by putting two or more in series to add up to the correct total.  On drilling, your bits should be designed for metals as well as wood.  Also I recommend using some oil while drilling, like the old 3-in-one squirt bottle, to minimize heat damage to the bits.

[aron]

From the FAQ:

[Burton]

To calculate parallel resistance, add the reciprocal of each resistance, which gives you the reciprocal of the total resistance.  The formula is 1/Rt = 1/R1 + 1/R2 +1/R3, etc.  where Rt is the total resistance, R1 is the resistance of the first resistor, R2 is the second, etc.  Then just flip 1/Rt to get your total resistance... Hope that's not too confusing!  Since Aron posed the picture I thought I might help out so you don't get the series and parallel mixed up.