GENERATOR- YOU DO THE IN/OUT POWER MATH

[DeepCut]

Guess what ?

I need help 

I'm making this :

http://www.rmcybernetics.com/projects/DIY_Devices/homemade_signal_generator2.htm

and i'm not sure what part of the pot R4 goes to.

Any help greatly appreciated,

Gary.

[gyulasun]

It goes to any one of the ends, the wiper goes to IC2 inverting Input and the pot's other end goes to R2.  Is that what you asked?

[DeepCut]

Thanks Gyula.

I still can't get it to work.

Where would the VR1 wiper go ? I have it  going to R1 ?


Gary.

[gyulasun]

Hi Gary,

Wiper of VR1 can be connected to any of the other two potmeter legs (between which the pot value is understood).

Putting it otherwise, wiper can go to pin 7 of IC1 (which is R1 indeed) or can go to pin 6-2..etc, any one of these two is good.  This way the pot is not a divider but a simple variable resistor, normally the unused third leg is connected to the wiper.  This insures if the wiper fails, the full resistance of the potmeter can function in a circuit.  The circuit symbol 'arrow' across the resistor body means the resistor is a variable pot.

Gyula

[DeepCut]

I'm giving up on that one for the moment


Gary.