Abstracta highaccuracy resolvertolinear signal converter for the measurement of angular displacement is proposed in this paper. Circuits, systems, and signal processing, volume 25, issue. Triangularsquarewave generator with independently controllable. Sine wave based vcos do exist, but are typically more complicated. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. A sine to triangular wave converter based on operational transconductance amplifiers otas is proposed in this paper. Its slightly dull cousin, the triangle wave, has weak overtones of odd har. Pdf analog triangulartosine converter using lateral. Otabased sinetotriangular wave converter springerlink. Convert between ordinary and decibel based power and voltage gains. The external signal pin lo sets the lower limit on the falling rate of the signal.
Assume that each collector has a 1 v peak sine wave riding. A sinetotriangular wave converter based on operational transconductance. Basic wcdma cellular base station transmitter block. To view the rest of this content please follow the download pdf link above. The converter has been implemented on a dspace set and has been successfully tested both with a sensor emulator and a real halleffect sinusoidal encoder. In the first section, the demodulator makes use of the sampleandhold circuit shc to sample the peak amplitude of the resolver signal.
This includes a variety of schmitt triggers, astable multivibrators, monostable multivibrators, and pulsewidthmodulators. Optimization of an ota based sine waveshaper openmusiclabs february 2, 2017 i. Most of the circuits can be practically implemented using the offtheshelf ic otas. The realization method exploits a hyperbolic tangent behavior of an ota to convert from a sine wave to a triangular wave. Jan 01, 2005 a sine to triangular wave converter based on operational transconductance amplifiers otas is proposed in this paper. The proposed circuit provides a simple configuration and employs only otas as the active elements. Optimization of an ota based sine waveshaper open music labs. Otabased sinetotriangular wave converter request pdf. Nonsinusoidal waveform generators and multivibrators using.
This scheme can be operated in both a voltagecontrolled. In this paper, a triangular to sawtooth waveform converter and a control logic circuit have been described. Paper 2 electronic circuits bipolar junction transistor. This chapter presents various waveform generators using otas. A novel resolvertodc converter based on otabased inverse. The realization method exploits a hyperbolic tangent behavior of.
In this paper, a triangulartosawtooth waveform converter and a control logic circuit have been described. Although otabased wave generator exhibits the current. Free essays, homework help, flashcards, research papers, book reports, term papers, history, science, politics. Introduction the most common analog voltage controlled oscillator vco cores are sawtooth and triangle wave generators. The ota2 is used as a feedback of the proposed circuit. Nonsinusoidal waveform generators and multivibrators. The principle of the resolver is depicted in figure 1a. Operational amplifiers and linear integrated circuits, 3e. Using two designed circuits connected with ota based sine to triangular wave converter and demodulator, a resolver to dc converter is proposed.
Ota1 and resistor r function as a triangulartosine waveform converter. Using two designed circuits connected with otabased sinetotriangular wave converter and demodulator, a resolvertodc converter is proposed. Rate limiter dynamic is used to convert applied sine wave input into triangular wave output. Squaretriangular wave generator using single dodvcc and. This is due to the simplicity and accuracy of charge integration with a single capacitor. This circuit was built based on a current tunable schmitt trigger connected to an otac integrator. The operational transconductance amplifier otabased squaretriangular. A sinetotriangular wave converter based on operational transconductance amplifiers otas is proposed in this paper. The external signal pin up sets the upper limit on the rising rate of the signal. The converter linearly produces output signal proportional to the shaft angle in full range of 360deg. Circuits, systems, and signal processing, volume 25, issue 6. The realization method exploits a hyperbolic tangent behavior of an ota to. Simple squarerooting circuit using otas request pdf. When there are multiple noise sources in a circuit, the total rootmeansquare.
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