hi, does anyone know if there is difference between LF353p vs LF353n? sound different really? They tell me the LF353n has more gain... What should I look at in the data sheet?

Is there a post or a web, where they indicate the type of sound they deliver, the different and better known ics?

thanks

Keeley is a great guy, not shy of sharing some trick with the public. That's great, but had some déjà vus when reading his site:

Boss Stacked SD-1 with Diode Switch

Description
New as of August 2007 --we're introducing a new feature now included in our SD1. We're now stacking two TI4558P chips. These two TI chips work in parallel, mounted on top of each other and soldered together. Many hi-fi stereo enthusiasts enjoy this technique for noise reduction (read The Art of Electronics for some...

Hi,

I've found in box some OPA2137. I can substitute the TL062 with this OPA2137? Worth it?

Thanks.

I know they’re difficult for most people to source, although I have a nice collection of genuine OTA’s I’ve always been extremely curious as to why I haven’t seen this done already. I understand the LM/NJM13700 can still be had fairly easily but you’d think in countries where importing can be difficult some resourceful person must have accomplished this

Or is there complications to designing it such as tightly matched components among other things I may not have thought of? :hmmm:

I’m a huge...

Hello does anybody have the datasheet of a TA7135? Or can anybody tell me the difference between the TA7135 and the TA7136? Because in the schematic of the Boss CE-1 I see written that IC1 and IC2 is a TA7135 but I have a CE-1 for repair and here it is a TA7136!?!

For a project, I would like to replace an MN3002 with an MN3004 due to availability. Both are a 512-stage BBD chip. Differences that immediately stand out are: GND pin is not equal. With the MN3002 this is on pin 7 and on the MN3004 it is on pin 1. We come immediately to the next point, pin 1 of the MN3002 is the VBB. This is a fixed voltage of 5V ?! This VBB is not on the MN3004.
Will this, and possibly several differences, create a problem in the exchange or are these outside the pin shift...

Hi amigos; I am building a Condor Cab Sim on a commercial PCB I bought. The brd is real small so all the labels showing the component locations I have to read with a mag. glass. Too small I guess I would say. Anyway, the pcb calls for ONE quad opamp. It does not give any specifics. So someone please give me the name of a decent quad opamp?. The design for the cab sim came from Runoffgroove.com (I believe it came from them?) but their schematic as drawn shows TWO 2 opamps e.g. TL072. So I am...

I'm about to start my first IC-based distortion project. Besides grounding yourself, what are the proper guidelines for handling ICs without shorting them out?

Good day All,
Pls I have a project which requires that I need to program a microprocessor 8051 18 pin & 38 pins chip. Pls what are steps I need to go through using Embedded C program language?
Also what is the difference between a micro controller and a microprocessor?
Deji.

Okay I know the great people of this site are well capable of helping my latest question.

Who can explain the differences in the most common Op amps and the most common Op amp replacements.

For example I know some places swear that the 4885 is the perfect replacement in your new distortion or overdrive pedal. I have heard the newer Op amps with long number and letter names are more hi fi and better suited.

I have also come across that because the less clean and easier some op amps are the...

Hey all. I recently acquired a 1982 OD-1 and decided to set off on a little research about the original. I was able to get the parts together to build one and decided to do some in production quad opamp comparisons with the out of production Raytheon RC3403. Here's the clip of the test. Youll need to decide for yourself about which one sounds best.

There is a Ehx Small Stone on my desk.

PCB have four EH1048 and two EH10368.

EH1048 are CA3094 , but I can't find info for EH10368 .

EH10368 are part of the LFO circuit.

Does anyone know what are those IC's ?

My guess is it's Small Stone V1, but I've never saw one with EH10368 before.

Hi friends, was sourcing for LM308N for the ultimate Rat build, and came across these:
image.jpg
Questions:
1. Can I trust those LM308Ns? They 'look' suspect
2. Is the CUE LM308 good for a Rat build?
3. Is that LM3080N a CA3080 equivalent (can I use in a Ross compressor build)?

HI! guys!!
I found that there're different number on MN3101 & MN3007
Like this

MN3101

MN3007

What's the different? 8) (I'm going to built CE-2 and Flanger 301 on tonepad)

ps.sorry for the bad grammar :oops:

i wan't to build a J-fet parallel looper, from guitarFXlayouts

it uses 4 j-fets and i was wondering if i could use a tl074.
i know that i could just put those fets and don't ask anything, but...

so any help or ideas would be really helpful.
thanks

savvas

Hi, i just wondering if i cant use an MNJ4558 instead of LM4558 for the eternity layout(lovepedal)

Hey everyone,

I'm fairly new here. I've been reading up on this forum for the past 2-3 months or so. I'm trying to learn all I can about...well, everything, considering I'm brand new to pedal building and don't really know anything about electronics except for the very, very basics. Thanks to you guys, I've completed two builds so far and have really learned a lot over the past few months. Anyway, I assume this is the right place to post this question. If it's not, my apologies!

I took apart...

Hi guys, it's my first time to post here and I don't know if this question was already asked or even answered. By the way, I would just like to know if there's any substitute of CA3130? I'm planning to build a Honey Bee OD and I can't find it here in our locality. Would a JRC4558 or maybe TL072 work? Thanks in advance.

-Winston

Hi, is there a formula I can use for Delay calculation with PT2399 : Delay-time Vs resistance-value ?
I have a table from datasheet showing some delay time and resistance values but I can't get the formula...

I'd like to build the echo-base having a multi-switch option for specific delay time.
THANKS

Super Noob question here!

I just need to add a simple volume boost to a true bypass pedal that I made. The pedal I have in the loop gives me a 3db-12db volume drop depending on the effect. Can I just use a simple Resistor-Op Amp-Potentiometer idea like the attached diagram, or should I build a mini booster circuit to put into the pedal like the Xotic EP Booster?

Tight on space in the pedal so smaller is better but if I go with the booster circuit I may just build a separate pedal to put in...

are there any chips that would work in that place of sd1024 chips and would the sound change

hello,

I am very very much a beginner in the world of pedal electronics so please forgive me if I'm wasting people time and what-not, but I've done a search and it doesn't look like anything like this is up here so... here goes..

I'm about to acquire a Blue Boy Deluxe, and plan on swapping out the op amp. The stock is the JRC4558 which is typically described as warm - that's nice, but I'd like something a bit different. I already have my warm overdrive, and I'm after a different flavor of...

Hello! I'm new to the world of op amps and I'm a little confused on how to power them properly. I'm planning on using the TL072 as an audio buffer for a reverb circuit. One half will be used as an input buffer before the digital reverb chip and the other half will be used as an output buffer. I have seen in other circuits that if I use a voltage divider on the signal input, it should work properly. My question is, if the signal input is different on the second half of the op amp (i.e.. after it...