Resistors in series

[Atom ant]

Any issue with running two 47r resistors in series in place of a 100r resistor? Is over or under original value better?

 

[steviejr92]

2 47R resistors in series will get you close enough to 100r. You will not notice a 6 ohm diffrerence over or under the suggested value

 

[Atom ant]

Thanks! I thought so, just making sure. Second question- pcb calls for 2 51p caps. I have two 47pf monolithic. Would it work?

 

[steviejr92]

Thanks! I thought so, just making sure. Second question- pcb calls for 2 51p caps. I have two 47pf monolithic. Would it work?

Absolutely! The 47pf will work just fine!

 

[KR Sound]

Thanks! I thought so, just making sure. Second question- pcb calls for 2 51p caps. I have two 47pf monolithic. Would it work?

Eh, that might make it blow up.

Just kidding. Totally good to go.

 

[darwin999]

Is over or under original value better?

You want the closest to the correct value.
Also, you might find paralleling 2 higher resistors easier to fit on the PCB than doing them in series.

 

[Nostradoomus]

You want the closest to the correct value.
Also, you might find paralleling 2 higher resistors easier to fit on the PCB than doing them in series.

Especially if you use 1/8w resistors as the little buddy riding on top



(And no I’m not making a 470r with those values.)

 

[pbrommer]

Especially if you use 1/8w resistors as the little buddy riding on top

View attachment 78483

(And no I’m not making a 470r with those values.)

Look at that 1/4W being an awesome big buddy giving little buddy a piggy back ride!

 

[Feral Feline]

Especially if you use 1/8w resistors as the little buddy riding on top

View attachment 78483

(And no I’m not making a 470r with those values.)

That's... that's ... so OBSCENE!

 

[tegendemuur]

I read about the "teepee" method of putting two in series. SMD or otherwise... Is there any best practice to this? I would think a "bridge" (the shape of a staple) formation with two hooks making the initial connection and have the two resistors stand up right, would look best.

 

[Fama]

I read about the "teepee" method of putting two in series. SMD or otherwise... Is there any best practice to this? I would think a "bridge" (the shape of a staple) formation with two hooks making the initial connection and have the two resistors stand up right, would look best.

View attachment 78488

I think I've done the teepee myself when putting two resistors in series from the get go, but I don't think it really matters that much either way. If you care about the looks, do what looks best for you.

 

[Atom ant]

I just did it like this?

 

[Feral Feline]

Looks good to me.

Also made me wonder at what point do the bridge-lengths become antennae?
I can't imagine a couple being a problem within an enclosure, unless it's a super-high-gain circuit.

If I remember to do so, my next high-gain build I'll socket a few resistors and experiment with lead-lengths.

 

[giovanni]

Looks good to me.

Also made me wonder at what point do the bridge-lengths become antennae?
I can't imagine a couple being a problem within an enclosure, unless it's a super-high-gain circuit.

If I remember to do so, my next high-gain build I'll socket a few resistors and experiment with lead-lengths.

Everything is an antenna. But as you said unless you have a high gain circuit or poor shielding it should be fine.

 

[Atom ant]

Thanks guys. Pedal works fantastic. Again, gonna come out and say that having the auditorium to test circuits on before boxing is so great. This forum is so helpful. Reminds me of the good old days of the internet. Just keep being awesome folks!

 

[Robert]

View attachment 78628

I just did it like this?

That looks better than the usual "A" shape to me.