Which resistors to have on hand?

[tee_2]

I have just started in this electronics stuff and I picked up a pack of resistors in the values 1, 12,15, 22, 47, 100, 120, 220, 390,470. in the K’s 1, 1.2, 2.2, 2.7, 3.3, 4.7, 10, 22, 33, 39, 47, 100, 470, and 1M. I am going to order a few in 330, 680. Does this cover a good range to start out with? I have 10-20 of each. Or do you think I need to add something. The 680, 1K, and 10K I am going to order 200.

I am just learning but am doing a lot with led’s at 9v and 12 v.

Thanks

Todd

 

[zachtheterrible]

the only thing that i can think of is add a couple 10M resistors, they've come in handy for me.

 

[Juglenaut]

get 1/4 and a 1/2 watt set.

I would even get a set one 1 watt resistors, but that is me.

 

[Screech]

The 680, 1K, and 10K I am going to order 200.

Wow!

There are many types of resistors too.
heres another type.

 

[Juglenaut]

you think they even make DIL.

 

[H /\ E K T P O N]

Variable.

 

[checkmate]

I don't really think there's a need to particularly buy resistors just for storage. That's simply a waste of money. Butthen again, I live in this small island called Singapore, where the store is a sub-hour trip away.

 

[Nigel Goodwin]

I have just started in this electronics stuff and I picked up a pack of resistors in the values 1, 12,15, 22, 47, 100, 120, 220, 390,470. in the K’s 1, 1.2, 2.2, 2.7, 3.3, 4.7, 10, 22, 33, 39, 47, 100, 470, and 1M. I am going to order a few in 330, 680. Does this cover a good range to start out with? I have 10-20 of each. Or do you think I need to add something. The 680, 1K, and 10K I am going to order 200.

Resistors come in various ranges, basically E12 and E24.

E12 has 12 values per decade, and E24 has 24 values per decade.

Generally E12 is all you need, if you ever require an E24 value you could get it specially.

The E12 sequence is:

1, 1.2, 1.5, 1.8,
2.2, 2.7
3.3, 3.9
4.7,
5.6
6.8
8.2

I would suggest you keep a range from 1 ohm to 820K, this will cover almost everything you ever need. You will find that you use many more of some values, as they run low I would suggest ordering larger quantities of those popular values.

 

[StupidDum]

There are a few resistance which I use often
1K to drive LED (5V supply)
10K for pull-up
220,470 to limit current, and 4.7k for..hm. dont remember
Usually, these resistors is sufficient for me to make simple, general digital circuit.

I also have a few rheostat range from 10k to 10M. This is kind of handy in testing small part of circuit where you can adjust it to the value you want.

SIL resistors are usually meant for pull-up on PCB, as it uses little space.

 

[jrz126]

4.7k's for transistor limiting? (Nigel's Pic programmer uses them)

webtronics **broken link removed** has 1000 resistors for $3.70 too