- #1
Generating a Backwards Sawtooth Waveform: Is an Op-Amp Circuit the Solution?
- Thread starter Jdo300
- Start date
-
- Tags
- Waveform
Click For Summary
Discussion Overview
The discussion revolves around generating a backwards sawtooth waveform using electronic circuits, specifically exploring the use of op-amps and alternative methods. Participants are considering various circuit designs and configurations to achieve this waveform.
Discussion Character
- Exploratory, Technical explanation, Debate/contested
Main Points Raised
- One participant inquires about a simple circuit using op-amps to generate a backwards sawtooth waveform with a sharp rise and linear fall.
- Another participant suggests generating a traditional sawtooth waveform and then inverting and offsetting it as a potential solution.
- A participant reports success with their approach and seeks additional simpler methods for generating the waveform.
- Another participant proposes using a single 8-bit downcounter with an R-2R ladder DAC configuration as an alternative method.
- One participant expresses interest in the frequency range achievable with the downcounter and notes the need for output buffering.
Areas of Agreement / Disagreement
Participants have not reached a consensus on the best method to generate the backwards sawtooth waveform, with multiple competing views and suggestions remaining in the discussion.
Contextual Notes
Some methods proposed depend on specific circuit configurations and assumptions about component behavior, which have not been fully explored or resolved in the discussion.
- #2
berkeman
Admin
- 69,537
- 25,120
Maybe generate a traditional sawtooth (integrate and dump), then invert it and offset it? Would that work?
- #3
. Does anyone know of any other ways to do this that may be simpler?
- #4
berkeman
Admin
- 69,537
- 25,120
Simpler... How about a single 8-bit downcounter with an R-2R ladder DAC configuration at the output...
- #5
Jdo300
- 548
- 5
Hmmmm... that could work :-). I wonder what kind of frequency range I can get from that. I would definitely need to buffer the output. Interesting approach.
Thanks,
Jason O
Thanks,
Jason O