Hi guys, I am having a little problem designing a triangular wave generator with a single supply. I intend to use a Schmitt Trigger Comparator circuit and an inverting integrator to design the circuit.

• Duty cycle = 0.5
• Frequency = 8.5kHz
• Supply voltage = 12 V (single supply operation)
• Vmax = 7.3V
• Vmin = 3.1V

All I know for now is the UTP = 7.3V and LTP = 3.1V.
I think I need an negative input for the inverting integrator for it to have a positive gradient part of my triangular wave. Is there any other way to do it?

Any help is appreciated. Thanks!

 

Exactly what is the little problem?

 

Post your circuit.

 

Exactly what is the little problem?

I need an negative voltage input for the inverting integrator for it to have a positive gradient part of my triangular wave. However, I am only allowed to use a single 12 volt supply.

Post your circuit.

I have not built the circuit as I am still in the process of designing the circuit and also deciding value of components.

 

Please post a copy (verbatim) of the problem as it was given to you.

 

You can design one without a negative supply.
You just apply a plus voltage offset to the plus input of the integrator using a resistive divider.

 

Hi crutschow,
I saw your post on triangle wave generator using 2 lm324 and single supply operation. Do you have the formulas or equations to find out the values of components?

Any help is appreciated, thanks!

 

Please post a copy (verbatim) of the problem as it was given to you.

Thanks so much Samuel for ignoring my request.

 

Thanks so much Samuel for ignoring my request.

Apparently this is the place for bad relationships.

 

Do you have the formulas or equations to find out the values of components?

The reference that Bertus posted has some equations.

But it would be a good exercise for you to determine that yourself.
You don't learn much from simply copying a circuit.

 

Thanks so much Samuel for ignoring my request.

Everything is listed in my post. The only difference is that I am allowed to use any method I want.