Stage Line 500W amp repair project

[bikemech]

Could cut these down View attachment 50656

I already have these

 

[bikemech]

What pins am i using on the TL034?
Is it 2, 3 and 7 ?

 

[bertus]

Hello,

Are you using the TL032?
Have a look at the datasheet.
Enhanced-JFET Low-Power Low-Offset Operational Amplifiers datasheet (Rev. C)
In there you will find this:


Bertus

 

[bikemech]

Hello,

Are you using the TL032?
Have a look at the datasheet.
Enhanced-JFET Low-Power Low-Offset Operational Amplifiers datasheet (Rev. C)
In there you will find this:
View attachment 50657

Bertus

Hi bertus, yes i have that pinout, but how do i know from the schematic, is the top the pointed end of the arrow and is the top of the TL034 the one with the dot at the end ?

 

[bertus]

Hello,

You could use one TL032 for X1 and X2, a second one for X3 and X4 in the schematic @WHONOES posted.

If you want some info on basic opamp circuits have a look in this book:
https://www.mouser.com/pdfDocs/analogengineer’scircuitcookbookopamps.pdf

Bertus

 

[WHONOES]

I'm busy this eve but, if you can wait till tomorrow I will draw a sketch for you.

 

[bikemech]

I'm busy this eve but, if you can wait till tomorrow I will draw a sketch for you.

Thank you and thank you for your time, that would be good, but its ok for now, enjoy your evening and i will do some research over the weekend and try to understand opams and how they work, and maybe understand a bit better,

Pete

 

[WHONOES]

See attached OPAMP pinout sketch. The spot indicates pin 1 sometimes they will have a notch at the top instead.

 

[bikemech]

aahhhh, i see thank you for that, i had it completely wrong, i thought it was like my sketch,

 

[bikemech]

is this because there duel, basically 2 amps in 1 IC, i did see some documentation where they were 4 in 1

 

[bertus]

Hello,

The opamps are this way connected in the housing:

Bertus

 

[bikemech]

that makes a lot more sense, thank you

 

[bikemech]

So this is what i have ended up with, looking at it now i think i made it hard for myself, anyway almost there

 

[WHONOES]

Why have you used 4 IC sockets when you only need 2?

 

[bikemech]

I basically coppied the drawing, didnt take in to account there dual, doh !!!

 

[WHONOES]

Yup. They are DUAL opamp's

 

[bikemech]

This is my frist piece of circuitry i have ever made, apologies

 

[bikemech]

Would you like me to remove 2 and redo it ?

 

[WHONOES]

Never mind. The first step is always the hardest.
Do you have any more veroboard and can you get the sockets off without damaging them?

 

[WHONOES]

Yes but, it might be easier to take all components of and start again.
The best way for you to attack it is draw a grid representing the hole and strips of your veroboard and then plan out component placement before mounting any bits.