Connection Help with UA760 Differential Comparator

[kASD]

Hi Folks,

Just Drawn this schematic, Does the connections are OK with respect to the polarity and Negative feedback arrangement....
Comparator is UA760 differential comparator.....

regards,
K a n w a r

 

[kASD]

Here is the link to the datasheet of UA760


http://www.tranzistoare.ro/datasheets/400/303666_DS.pdf

 

[kASD]

😕 😕

 

[classd4sure]

Hi Kanwar,

That's TTL output so you might need a pullup no?

Regards,
Chris

 

[powerbecker]

Hello Kanwar,

for short view it seems OK for me, Chris please have a look to the schematic on page 2 : I think the output don´t need a pullup.
Regards
Heinz!

 

[kASD]

Hi,

Its a TTL output, but its also Push-Pull type not an open collector type thats why it doesnot need pull up resistors...

I think the polarity of audio signal at the output would be inverted and the amp behaves as an inverting amp
So the connections regarding polarity are OK isn't it.....

K a n w a r

 

[powerbecker]

...and when not : there are minimal two easy possibilities to change the polarity!😀
Heinz!

 

[kASD]

Hi HeinZ,

Yes two option one is to swap the output of comparator and second one is to swap the inputs....but the connections in my point of view were already OK...

 

[kASD]

Hi everyone ,

If we put a signal at input 2 of UA760 than inverted signal is obtained at output 2, but non-inverted signal is obtained from output 1..

If we put a signal at input 1 of UA760 than inverted signal is obtained at output 1, but non-inverted signal is obtained from output 2..

Therefore its clearly evident that to get non inverted output signal one has to feed the signal to its either input, but take the signal from complemented output....

If input 1 is used than say output 2 will serve with same polarity of signal....
If input 2 is used than say output 1 will serve with same polarity of signal...

Correct me If I were wrong....

K a n w a r

 

[powerbecker]

Hello Kanwar,

still with this antique?🙂
Strange: no signs for polarities or a truth table,
only (for luck) the schema!
I would say it´s OK like You write!
Regards
Heinz!

 

[kASD]

HeinZ......Dont you know OLD is GOLD....You know these IC creators dont even know that what is a truth table....😉

 

[kASD]

Hi ,

Thats my Class-D with LM360 differential comparator makes things easy !

 

[kASD]

front view

 

[kASD]

bottom side

 

[classd4sure]

Hi,

Looks cool, but, who stole your filter inductor 😕

 

[kASD]

The inductor is pure aircore with 4" outer diameter and is located offboard.......😀