simple mic preamp question

[mat]

Hi there,

In what numbers of the IC's legs do i put the 5 leads from the schematic ?



+9v to pin7 ?

output jack to pin6 ?

What about the ground ?

Thanks,
mat

[StephenGiles]

Anticlockwise from the + input: 3,2,4,6,7.
Stephen

[Samuel]

Junction of 220k resistors and 1uF to pin 3
junction of 100k resistors to pin 2
9V to pin 7
ground to pin 4
junction of 100k and 15uF to pin 6


Ground is connected to Vcc- since there is a bias network creating a virtual ground at 4.5V, so that the 0V from ground appears as -4.5V to the opamp. (Of course the 0V is also a relative measure, but no need to get too abstract)

[petemoore]

the Triangle:
 Inputs [  -  &  +]  left upright
 output at tip of the angle on the right >
 top V+
 Bottom V-

[mat]

Thank You all, stephengiles, samuel and petemoore  

cheers,
mat

Anticlockwise from the + input: 3,2,4,6,7.
Stephen