Electronics Questions

Sean7

Anyone familiar with the layout of a standard low-power variable resistor(potentiometer) able to tell me about how to connect one? Simple I know but I didn't really think I needed to earth it until today?

Also I have a slightly more specific question regarding some ICs, LM386 and TL072 Op-Amps to be precise and if anyone with even a basic knowledge of these could PM I would be forever grateful.

Also I apologise if this is posted in the wrong forum but it seemed the most appropriate place for it. Mods move it at your own discretion.

Thanks in advance to anyone you can help.

themole

pots work like this.

so you don't need to earth it.
it all depends on your application.

what sort of questions on OP-Amps?

Sean7

Thanks man, I was looking all over the net for a simple diagram like that. The op-amp problem is just that I'm making a ciruit ti go into a reverb unit for an amplifier and it uses 3 op-amp, with which I have zero experience. You don't know any other sites like that link you posted which deal with them do you?

themole

the link seems good

Op-Amp stands for operational amplifier, btw, so if ya google that you will get loads of info.

they all work the same way. the differences between different version is in the specifications of some properties, power supply voltage, gain etc.

you can go into indept knowledge finding out how they work, but if ya just want to use one just follow someone elses circuit diagram just make sure you check the chip pin out and spec to make sure it is connected right

Sean7

Thanks man, you've been a big help. I am just following someone else's diagram, the chip isn't even numbered. Anyway thanks

Anima

As a matter of interest, what type of audio stuff have you built?

I'm trying to get together a project atm. I've seen a nice SSL compressor that can be built easy enough, http://gssl.rolandklinkenberg.com/english/index.html.

Sean7

Sorry I didn't reply sooner.
I'm currently building a Spring Reverb unit and it's my first proper go at an audio unit. Definatly will try more after this though.

Anima

Class, got any links for pics/schematics? I'd love to build a hardware reverb, sick of using crappy software plugins.

incisor71

Anima wrote:

Class, got any links for pics/schematics? I'd love to build a hardware reverb, sick of using crappy software plugins.

I have schematics from some years back for a Springline reverb unit - I can scan them in this weekend coming if they'd be of any help to you?

Anima

Yeah, that would be great thanks

incisor71

Thoroughly embarrassed, I come back and ask... how the hell do I add a picture attachment to a post??

themole

when replying there is a paper clip symbol click that.

the browse to file and click upload