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D. I. Y. Watch Timing Machine.

svorkoetter
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svorkoetter
svorkoetter

I'm a watch DIYer, having serviced two watches myself, partially using tools of my own making. One thing I've been working on over the last few months is my own PC based timing machine. I've finally g

matabog
matabog

So I played a bit in Solidworks, and this is what I got. A friend of mine helped me with the 3D printing.   sup_2.STL mic 2.STL pesa.STL sup_1.STL   the

Parrick
Parrick

Dear svorkoetter, These days with my failing eyes and ears I have given up working on watches and confine myself to pocket watches and clocks. I find that I can deal with the larger components easier

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CWRNH WRT Addict

CWRNH

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25 minutes ago, LittleWatchShop said:

I don't see any other mistakes.

Should I add this capacitor also?  I didn't think I needed it.  It wasn't on the original schematic, I had added it because the data sheet for the rail splitter showed it....

Capture.PNG

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CWRNH WRT Addict

CWRNH

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35 minutes ago, LittleWatchShop said:

You never fixed this issue and I missed on subsequent reviews

I followed the schematic below....  Supposedly he got it working like this....  It is a LT1115 and he is using it as a buffer not amplifying with it.  The rest of the OP amps are 5534s.  This schematic is from a previous post several pages back...  It is a modified version of the watchOscope one.  (Which I did make last week)  I am making several difference ones to see what works best.  I am using a modified microset as a preamp right now in my diy setup which works quite well.

image.png.7cac548179612b0c2920b6f3feecb00d.png

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LittleWatchShop Distinguished Member

LittleWatchShop

Posted
Posted
6 minutes ago, CWRNH said:

I followed the schematic below....  Supposedly he got it working like this....  It is a LT1115 and he is using it as a buffer not amplifying with it.  The rest of the OP amps are 5534s.  This schematic is from a previous post several pages back...  It is a modified version of the watchOscope one.  (Which I did make last week)  I am making several difference ones to see what works best.  I am using a modified microset as a preamp right now in my diy setup which works quite well.

image.png.7cac548179612b0c2920b6f3feecb00d.png

1 is not equal to 2.  Go back and carefully look at the datasheets for these parts and look at your schematic.

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praezis Super WRT Addict

praezis

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There is a major error in the schematic, it will never work this way ? :
negative supply pins are connected to +4.5 V and +inputs of NE5534 are connected to 0 V!!

Another question, to what input are you planning to connect your preamp? Will it bear an output signal of 0.75 to 75 V_peak (theoretical - there will be clipping of course)? For what do you need that ambitious amplification of 7500x ?

Frank

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CWRNH WRT Addict

CWRNH

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1 hour ago, praezis said:

There is a major error in the schematic, it will never work this way ? :
negative supply pins are connected to +4.5 V and +inputs of NE5534 are connected to 0 V!!

Another question, to what input are you planning to connect your preamp? Will it bear an output signal of 0.75 to 75 V_peak (theoretical - there will be clipping of course)? For what do you need that ambitious amplification of 7500x ?

Frank

Thank you...  Please tell me how to fix.  Looks like I have 9v at neg supply.  image.png.2c4a6a55c87f28bcf242ae7de0461a6a.png

UpdatedOpAmp.TSC

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praezis Super WRT Addict

praezis

Posted
Posted (edited)
42 minutes ago, CWRNH said:

Looks like I have 9v at neg supply. 

In fact you have. I wonder if you already blew your ICs?

You should connect:
+9V to V+ pins
0V to V- pins
4.5V (TLE2426) to +In pins.
?
...and think about my 2nd question.

Frank

Edited by praezis
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