# Low frequency ac waveform generator

## Abstract

Low frequency sine, cosine, triangle and square waves are synthesized in circuitry which allows variation in the waveform amplitude and frequency while exhibiting good stability and without requiring significant stablization time. A triangle waveform is formed by a ramped integration process controlled by a saturation amplifier circuit which produces the necessary hysteresis for the triangle waveform. The output of the saturation circuit is tapped to produce the square waveform. The sine waveform is synthesized by taking the absolute value of the triangular waveform, raising this absolute value to a predetermined power, multiplying the raised absolute value of the triangle wave with the triangle wave itself and properly scaling the resultant waveform and subtracting it from the triangular waveform to a predetermined power and adding the squared waveform raised to the predetermined power with a DC reference and subtracting the squared waveform therefrom, with all waveforms properly scaled. The resultant waveform is then multiplied with a square wave in order to correct the polarity and produce the resultant cosine waveform.

- Inventors:

- Issue Date:

- OSTI Identifier:
- 6736140

- Application Number:
- ON: DE84014310

- Assignee:
- Dept. of Energy ERA-09-036060; EDB-84-119586

- DOE Contract Number:
- AC12-76SN00052

- Resource Type:
- Patent

- Resource Relation:
- Other Information: Portions are illegible in microfiche products

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 42 ENGINEERING; FUNCTION GENERATORS; DESIGN; HYSTERESIS; WAVE FORMS; ELECTRONIC EQUIPMENT; EQUIPMENT 420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)

### Citation Formats

```
Bilharz, O.W.
```*Low frequency ac waveform generator*. United States: N. p., 1983.
Web.

```
Bilharz, O.W.
```*Low frequency ac waveform generator*. United States.

```
Bilharz, O.W. Tue .
"Low frequency ac waveform generator". United States.
```

```
@article{osti_6736140,
```

title = {Low frequency ac waveform generator},

author = {Bilharz, O.W.},

abstractNote = {Low frequency sine, cosine, triangle and square waves are synthesized in circuitry which allows variation in the waveform amplitude and frequency while exhibiting good stability and without requiring significant stablization time. A triangle waveform is formed by a ramped integration process controlled by a saturation amplifier circuit which produces the necessary hysteresis for the triangle waveform. The output of the saturation circuit is tapped to produce the square waveform. The sine waveform is synthesized by taking the absolute value of the triangular waveform, raising this absolute value to a predetermined power, multiplying the raised absolute value of the triangle wave with the triangle wave itself and properly scaling the resultant waveform and subtracting it from the triangular waveform to a predetermined power and adding the squared waveform raised to the predetermined power with a DC reference and subtracting the squared waveform therefrom, with all waveforms properly scaled. The resultant waveform is then multiplied with a square wave in order to correct the polarity and produce the resultant cosine waveform.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1983},

month = {11}

}