hello,

anybody have ideas what STROBING(pin#6) does??? the datasheet shows how its connected but I dont have idea what strobing does to the comparator...





Ralph

 

The strobe pin allows you to turn off the output stage.

 

The strobe pin allows you to turn off the output stage.

ok thanks!

but would output be floating??

and I qoute: from LM311 Texas ins

"If the strobe is low, the
output will be in the off state regardless of the
differential input."

dont dont what OFF here means.. if floating/disconnected OR just pulled to Gnd or Vee...

Ralph

 

dont what OFF here means.. if floating/disconnected OR just pulled to Gnd or Vee...

If the strobe is low, the output transistor is in the OFF state; therefore the voltage level will float to whatever might be supplying current.

 

Ok thanks!

uhhmmmm...I have pin8(Vcc) to +10V... and tied together pin4(vee) and pin1(GND) to -10V..... I wonder if strobe pin can be pulled low to -10v(by way of 1k resistor).... since pin1 is now referenced to -10V....just asking..

output pin7 is pulled to +10v through 2k2 resistor(output is taken here).... problem is when I kick-in the strobe(ON), I get an ugly DC before output is finally in "OFF"....

wait... I will just SIM this one up..

EDIT: my SIM is funny!! (multisim v8) it WILL simulate BUT NOT the strobe pin...

Ralph