Sine Wave Oscillator Circuits
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Where good frequency stability is required, in applications such radio transmitters, basic LC oscillators cannot guarantee to hold their frequency without some drifting, which can be caused by quite small changes in supply voltage (although stabilised power....

In case of Japan, the electricity to be using in the home is 50 Hz or 60 Hz. In case of 50 Hz, the 1cycle sine wave occurs the 50 times for the 1 second. 60 Hz are the 60 times. There is a way of making make the Lissajous as the way of understanding that....

When adding an alternating current signal to the capacitor, the wave position (the phase) of the charging current of the capacitor and the voltage of the capacitor shifts by 90 degrees. When adding an alternating current signal to the coil, it changes....

By removing harmonics from a square wave, this circuit generates an accurate and adjustable sinewave output....


An Operational amplifier based sine wave generator circuit, it is basically a wein bridge oscillator. Because of its simplicity and stability, one of the most commonly used audio frequency oscillator is weinbridge. The wein bridge oscillator in which the....


The Wien bridge sine wave oscillator to introduce is the oscillator which works in the oscillation by returning(positive feedback) the oscillation output to the input. The point of this circuit is the negative feedback circuit to make the oscillation....



Many RC oscillators use the advanced circuits in the phase shift unit. They use the voltage feedback amplifier, and the gain of the voltage feedback amplifier will reduce sharply in the high frequency, and gain will stop, when it has not reached the high....

The singlejunction transistor is always used in the sawtooth generator and pulse generator, and it also can form the simple sine wave generation circuit. As an oscillator circuit of the discrete component, it uses fewest components. As the figure shown,....

The circuit shown in the chart is 1kHz sine wave oscillator circuit. Basing on the doubleT circuit, the circuit using 741ordinary operational amplifier to produce 1000Hz sine wave output. Adjusting 100k? potentiometer will make circuit start oscillation,....

Many RC oscillators use advanced circuit in phase shift unit. It uses a voltage feedback amplifier, of which the gain will get a sharp decline in a higher frequency and stop oscillation before reaching the desired frequency. That is the reason why voltage....



The chart shows the Wien bridge sine wave oscillator circuit. The amount of negative feedback circuit is determined by the internal resistance of FET. When the peak value of oscillator output reaches the regulated voltage of regulator diode D1, Q2 turns on,....




The sine wave generator composed of inverter is shown as the chart. The circuit could get high stable sine wave in more than a few MHz. In the figure, A1 and the crystal oscillator form a oscillating circuit, the output of A1 becomes sine wave signal after....

This schematic example (see sine2square. png ) demonstrates a sinusoidal voltage input at a frequency of 10KHz converted to a square wave through an inverterbased circuit. VDD and VSS rails are ties to +1V and =1V, respectively. The control file (....

This project is a simple 12V to 220V modified sinewave inverter using 555 timer IC and CD4017 decade counter. This inverter can deliver 300W continuous power and around 500W max power output (short period). A very good inverter for uninterruptible power....

Only with a single chip active component (4069 IC), this circuit will convert sine to square waves without a powersource. To test some audio instruments, we....

Quadrature oscillator is another type of phase shift oscillator. This circuit produce two sine wave signal. One of them is shifted 90 degree from the other....

This is a circuit that can generate 1kHz to 25kHz sine waves with a THD better than 80dB. This circuit consist of a 4thorder lowpass filter, a TTL counter....


Getting the right amplifier loop gain is the major problem in producing a low distortion constant amplitude sine wave. However, we can solve this problem with....

This is a Sine Wave Oscillator circuit. This circuit as known asĀ amplitudestabilized sinewave oscillator. It can gives high purity sinewave output down to....

This is a Wienbridge sinewave oscillator circuit. This circuit uses negativefeedback stabilization to make sure the gain won`t go higher than unity to....


The circuit illustrated produces a clean sine wave signal ideal for audio testing, or wherever a goodquality sine voltage source is required. It uses one integrated circuit which is a widelyavailable dual operational amplifier, the Texas Instruments....

Most of the V/F converters in this chapter produce pulse or squarewave outputs. Many applications (such as audio, filter, or automaticequipment testing) require a sinewave output, such as is produced by this circuit. The sine waves from this circuit span....

For a 0 to 10V input, this circuit produces sinewave outputs of 1 Hz to 20 kHz, with better than 0. 2% linearity. Distortion is about 0. 4% and the sinewave output frequency and amplitude settle instantaneously to a stepinput change. To calibrate, apply....