LM324-projects...

Pehr · Posted: Fri Nov 25, 2005 8:37 am Post subject: LM324-projects...

I've got ~125 LM324s and thought I'd build something of them. They're good since they run on both single and dual power supply, but the input voltage range is from -0.5V to 32V, not +/-15V as the TL084 Confused

Is that a big disadvantage?

I know that the DS7 uses LM324, but I don't want 60 of those Razz

Is there any other good applications of the LM324?

jksuperstar · Posted: Fri Nov 25, 2005 12:07 pm Post subject:

Good for sensors (piezo drum pads, photodiode light sensors, simple microphone circuits). Maybe build a new controller instrument?

danielwarner · Joined: Dec 18, 2006 Posts: 65 Location: Sacramento

Arthur Harrison's audio sweep oscillator uses a couple LM324s:
http://home.att.net/~theremin1/Circuit_Library/sweep.html

etaoin · Joined: Jun 30, 2005 Posts: 761 Location: Utrecht, NL

Pehr · Posted: Thu Nov 22, 2007 1:10 am Post subject:

I know!

I could build abt 60 Klee sequencers with all the 324s I have Rolling Eyes

andrewF · Posted: Thu Nov 22, 2007 1:38 am Post subject:

CGS39 quad logic gate uses two LM324s, you could build 60 of those.
CGS29 wave multipliers use three......40 ?

Pehr · Posted: Thu Nov 22, 2007 2:18 am Post subject:

yes, those logic gates looks interesting. I'll build some of these too Very Happy

the 324 is a good comparator I guess Rolling Eyes

Pehr · Posted: Thu Nov 22, 2007 2:22 am Post subject:

I didn't know the wave multiplier used 3 though Very Happy

frijitz · Posted: Thu Nov 22, 2007 10:33 am Post subject:

Pehr · Posted: Thu Nov 22, 2007 2:43 pm Post subject:

Pehr · Posted: Fri Nov 23, 2007 4:40 am Post subject:

Perhaps the Papareil VC-Dual Linear ADSR?

softfin · Posted: Fri Nov 23, 2007 5:21 am Post subject:

The 324 was (is still?) used on a lot of Electro-Harmonix effect pedals. I bought some of them years ago for a Small Clone chorus. Hehe, that one ended up being the most heavily modified project I've ever built . Very Happy

andrewF · Posted: Fri Nov 23, 2007 5:30 am Post subject:

Houshu`s HADSR only needs one chip - LM324
http://www5b.biglobe.ne.jp/~houshu/synth/eg0105.gif

mediatechnology · Posted: Sun Nov 25, 2007 9:06 am Post subject:

frijitz · Posted: Sun Nov 25, 2007 9:44 am Post subject: Re: LM324-projects...

Pehr · Posted: Sun Dec 02, 2007 11:33 pm Post subject:

Some Yusynth modules can use the LM324 Cool

http://yusynth.net/Modular/EN/MINMAX/index.html
http://yusynth.net/Modular/EN/WAVEFOLDER/index.html

Pehr · Posted: Mon Dec 10, 2007 4:31 am Post subject:

How about the LM358? Confused

Could the LM324 replace it?
Or are there important differences?

I know they're 8-pin and 14-pin, but one could change the PCB layout for that.

Clack · Posted: Mon Dec 10, 2007 7:36 am Post subject:

national semiconductor says for the lm358 in the 'also recommended' box -

"LM324 Quad Version"

which means I guess its pretty much identical in characteristic

http://www.national.com/mpf/LM/LM358.html

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Pehr · Posted: Mon Dec 10, 2007 8:09 am Post subject:

Thanks for the answer guys Very Happy

This means I can use more of my 324s Cool

. For example: cgs drum simulator, cgs analog xor/xnor, Yusynth audio/CV Mixer... Twisted Evil

Rykhaard: I think I'll build the Yusynth version of that multiplier. No 3080s there Smile

Btw, If I get any of my 324s left I'll let you know Wink

Pehr · Posted: Sat Dec 15, 2007 12:55 am Post subject:

LM324 effects:
http://yusynth.net/archives/Elektor/Waveshapers-1980.pdf
http://yusynth.net/archives/Elektor/dent_de_scie_module.pdf

Now all I need to do is practice my French Very Happy

fonik · Posted: Sat Dec 15, 2007 3:05 am Post subject:

Pehr · Posted: Sat Dec 15, 2007 4:11 am Post subject:

Yes I have never understood that either... Confused

Perhaps it's like a fuse?

http://en.wikipedia.org/wiki/Zero-ohm_resistor Question

andrewF · Posted: Sat Dec 15, 2007 4:30 am Post subject:

I assumed, as Houshu has `corrected dec01` next to it, he previously had a resistor there but decided it wasn`t necessary and it was easier to insert 0 R than redraw the schematic.

That was just my assumption, in fact you CAN buy 0 R resistors (why? I don`t know)

You can write to Houshu - he is a VERY nice guy (he once drove a return trip total of about 4 hours to pick me and my synths up, to go to a synth-diy meeting)

Pehr · Posted: Sat Dec 15, 2007 4:49 am Post subject:

About zero ohm resistors: