Design And Analysis of an improved version of triangle-to-sine wave conversion

1.2 Shaping Techniques 1.1 Introduction 1.3Trigonometric Functions Synthesis CHAPTER 1

CHAPTER 2 Bipolar Technique 2.1 Introduction 2.2 Analysis of the General Sine-Shaping Network

CHAPTER 3 Mosfet Technique 3.1 Introduction 3.2 Synthesis Principle and Analysis

CHAPTER Transistor shape

Current source circuit 4.2 Circuit Analysis

CHAPTER 5 Improvement: - Simulation for the old circuit Triangle-to-Sine wave conversion by using spice technique (Microcap V6). The old technique used the amplitude in mV. The result of this simulation has shown good agreement with the provided lab-result. 1-Triangle to Sine wave converter by using transistor

Simulation circuit

a-Diode Shape technique -The Simulation for this technique is carried out by using computer program (Microcap V6). -In this technique the diode shape has been utilized(it is easy to built). -The advantage of this approach is to eliminate the two transistor which lead to the elimination two current source in old circuit. -This technique doesn’t required DC source. 2-Two different approach in developing triangle-to- Sine converter have been adopted as :-

Simulation circuit

·  y added mixer in diode shape technique Triangle-to-Sine wave converter we can obtain Triangle AM modulator-to-Sine wave AM modulator as shown

Simulation circuit

b -Seven-Segment Using 12 Transistor ·The Seven Segment Triangle-to-Sine wave converter has been simulated by using spice technique

Simulation circuit

· The advantage of this proposed Triangle-to-Sine wave that its ability to increase the operating voltage from v · by added mixer in Seven Segment Triangle-to-Sine wave converter we can obtain Triangle AM modulator-to-Sine wave AM modulator as shown

Simulation circuit

Conclusion  The importance of triangle to sine wave converters stem from the fact that triangular waveforms are easier to generate.  Triangular waveforms are generated from pulse (square wave) generator by integrating the square wave.  The BJT, which has the smallest error than any other technique. Also, the angular range could be increased by one π for each addition of the transistor.

 The MOSFET, which has the advantage that it can be applied to synthesize any odd function.  The nonlinear technique as a whole has the advantage that we could get an offset output voltage which appears as a phase shift associated with the output signal.  For high frequency the techniques are not work good.  In old Bipolar technique the amplitude should be small.  The advantage of Seven Segment technique Triangle-to-Sine wave that its ability to increase the operating voltage from1.8-15v.

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