Simple squarerooting circuit using otas request pdf. A sinetotriangular wave converter based on operational transconductance. 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. Using two designed circuits connected with otabased sinetotriangular wave converter and demodulator, a resolvertodc converter is proposed. Although otabased wave generator exhibits the current. The realization method exploits a hyperbolic tangent behavior of. This chapter presents various waveform generators using otas.
The operational transconductance amplifier, or ota as it is normally. Optimization of an ota based sine waveshaper openmusiclabs february 2, 2017 i. 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. Otabased sinetotriangular wave converter springerlink. Abstracta highaccuracy resolvertolinear signal converter for the measurement of angular displacement is proposed in this paper. Nonsinusoidal waveform generators and multivibrators.
Rate limiter dynamic is used to convert applied sine wave input into triangular wave output. In this paper, a triangular to sawtooth waveform converter and a control logic circuit have been described. The ota2 is used as a feedback of the proposed circuit. Convert between ordinary and decibel based power and voltage gains. This includes a variety of schmitt triggers, astable multivibrators, monostable multivibrators, and pulsewidthmodulators. In the first section, the demodulator makes use of the sampleandhold circuit shc to sample the peak amplitude of the resolver signal. Introduction the most common analog voltage controlled oscillator vco cores are sawtooth and triangle wave generators. When there are multiple noise sources in a circuit, the total rootmeansquare. Paper 2 electronic circuits bipolar junction transistor. Squaretriangular wave generator using single dodvcc and. The proposed circuit provides a simple configuration and employs only otas as the active elements.
This circuit was built based on a current tunable schmitt trigger connected to an otac integrator. Operational amplifiers and linear integrated circuits, 3e. Jan 01, 2005 a sine to triangular wave converter based on operational transconductance amplifiers otas is proposed in this paper. To view the rest of this content please follow the download pdf link above.
Free essays, homework help, flashcards, research papers, book reports, term papers, history, science, politics. This scheme can be operated in both a voltagecontrolled. Circuits, systems, and signal processing, volume 25, issue 6. A sinetotriangular wave converter based on operational transconductance amplifiers otas is proposed in this paper. In this paper, a triangulartosawtooth waveform converter and a control logic circuit have been described. A sine to triangular 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 principle of the resolver is depicted in figure 1a. Basic wcdma cellular base station transmitter block. The operational transconductance amplifier otabased squaretriangular.
Pdf analog triangulartosine converter using lateral. Sine wave based vcos do exist, but are typically more complicated. A novel resolvertodc converter based on otabased inverse. Ota1 and resistor r function as a triangulartosine waveform converter. Nonsinusoidal waveform generators and multivibrators using. Otabased sinetotriangular wave converter request pdf.
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. This is due to the simplicity and accuracy of charge integration with a single capacitor. Using two designed circuits connected with ota based sine to triangular wave converter and demodulator, a resolver to dc converter is proposed. Its slightly dull cousin, the triangle wave, has weak overtones of odd har. Circuits, systems, and signal processing, volume 25, issue. If we apply a constantly changing signal such as a squarewave, triangular or sinewave type signal to the input of a. The external signal pin lo sets the lower limit on the falling rate of the signal. Triangularsquarewave generator with independently controllable.
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