Help me Mr. Carl

[alnamr]

hi mr carl

You see this board




It's a forum here

There is a problem are you can identify exits 1 and 2 in the picture

Party and No. 1 in the ic 8038 Is
To v+ direct

Where 1 and 2 to where???
You all thanks

[technos]

The 8038 is a waveform/function generator chip. Point 1 you hook up to an 8 ohm speaker, and at point 2 are different waveforms that can also go to an lm386 or transistor buffer.

[Carl-NC]

This is a simple signal generator. The output signal (1) can be connected to whatever you want a signal for. The amp is connected to pin-2 which is a sine wave, but could be connected to pin-3 or pin-9 for a triangle or square wave. There are data sheets available on the 8038 that explain all this.

- Carl

[Cyclonite]

Hi @alnamr,

Why are you using an obsolete chip ICL8038 ?

I have a few of them, but if I had to buy them now, then they would cost me $50 or more!

Why not use the cheap $3 and better XR2206 from EXAR ?

XR2206 from Mouser.com (Clock Generator 10V-26V 0.01Hz-1MHz Temp. 0C to 70C):
http://nl.mouser.com/Search/Refine.aspx?Keyword=XR2206

XR2206 Function Generator:
http://www.solderingpoint.com/projec...206/xr2206.php

XR2206 Function Generator (New Version):
http://www.loetstelle.net/projekte/x.../xr2206neu.php

Note:

Elektor Electronics Magazine has many Function Generator designs using the XR2206 including the PCB's. Many of which can still be ordered (cheap), or made by yourself by the presented PCB Layouts.

Elektor Electronics Magazine:
http://www.elektor.com/

Attachment:

XR2206 - Monolithic Function Generator (EXAR Corporation) Datasheet

Board Image
Schematic
Board Layout
PCB

Board Image (New Version)
Schematic (New Version)
Board Layout (New Version)
PCB (New Version)

Regards,

Robert

[alnamr]

hi mr carl

Well 3 and 9 on the pin
However, two out of 386
Where to arrive

To the pin as well? I see the image

[Carl-NC]

I don't understand your question.

[kt315]

I don't understand your question.

wherefore 3 and 9 pins of the IC use for? (if they are FREE, on the schematic)

yours

[alnamr]

Thank you, Mr. Carl, and I apologize you have disturbed a lot

Mr. kt.315 I'm connected to the ground sockets 3 and 9 and leave the C4 and aut Signal -emptyThat's right??


Party Is No. 1 in 3083 is empty??