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Wien Bridge Sine Wave Oscillator Circuit
This Wien-bridge sine-wave oscillator uses a 2N3819 as an amplitude stabilizer.
Three-Decade 15Hz To 15Khz Wien-Bridge Oscillator
In this circuit, an LM741 op amp drives a Wien-bridge network using two zener diodes as
Phase-Shift Oscillator For Audio Range
This phase-shift oscillator is useful for audio oscillator applications. Adjust R7 for a good sine w
A Wien-bridge oscillator can be made Vllriable by using two frequency-determining parts that are varied simultaneously at high tracking accuracy. High-quality tracking potentiometers or variable capacitors are, however, expensive and difficult to obtain. To avoid having to use such a component, this oscillator was designed to operate with a single potentiometer.
Very Low Distortion Oscillator
This oscillator uses a bridge circuit with an optoisolator as a gain-control device. The resultant distortio
Sine wave output buffer amplifier
The sine wave output has a relatively high output impedance (1K typ). The circuit provides buffering, gain, and amplitude adjustment
Audio sine-wave generator
U1A, an op amp, oscillates at the frequency at which the phase shift in the Wien bridge network is exactly zero degrees. Changing bridge component values changes the oscillator frequency. In this circuit, we need change only the two resistors to do this. S1A chooses a value among Rl through R6, and SIB similarly selects a value from R7 through R12. U1A must provide enough gain to overcome...
Pure Sine-Wave Generator
This circuit produces a pure, - 80-dB THD sine wave with a frequency that is equal to the fc of IC3"s filter. A TT
Pure Sine-Wave Generator Circuit
A TTL counter, an 8-channel analog multiplexer, and a fourth-order low-pass filter can generate 10- to 25-kHz sine waves with a THD better than -80 dB. The circuit cascades the two second-order, continuous-time Sallen-Key filters within ICS to implement the fourth-order low-pass filter. To operate the circuit, choose the filter`s cutoff frequency,^, by tying IC3`s D0 through D6 inputs to-5 V...
Lc Sine-Wave Generator
This compact LC oscillator offers a frequency range of about 1 kHz to almost 9 MHz and a low-distortion sine-wave ou
Sine wave oscillator
The oscillator delivers a high-purity sinusoid with a stable frequency
Battery Powered Sine Wave Generator Circuit
The quality of the sine wave depends on how closely you match the components in the twin-T network
Adjustable sine-wave audio oscillator
Lamp LI stabilizes the loop gain at higher frequencies while the limiting action of R2, CRI, and CR2 prevents clipping at low frequencies and increases the frequency adjustment range from about 3:1 to greater than 10:1.
Simple Sine-Wave Generator Circuit
A 555 timer operating in the astable mode generates the driving pulses and two 4518 dual BCD (binary coded decimal) counters provide the square waves. A TL081 op amp serves as an output buffer-amplifier, and potentiometers Rl and R2 are used in order to control the pulse`s frequency and amplitude, respectively. The output-frequency range can be varied by changing Cx. For example, a value of...
Sine Wave Generator Circuit
In this circuit, a square wave is filtered by a high-order low-pass filter so that a -3-dB frequency will eliminate most harmonics of the waveform. As a result, the filter outputs a fundamental sine wave. This method is applied to generate a sine wave by using a switched- capacitor filter (MAX292) (see the figure). This circuit offers wide frequency range (0.1 Hz to 25 kHz),
Sine- And Square-Wave Ttl Oscillator
Using a Quad NAND Gate, the TTL oscillator can use fundamental crystals between 1 and 10 MHz. The sine
Low-Frequency Lc Oscillator
Basically a Hartley oscillator using a triple-emitter follower, this oscillator can be used at audio and low ra
Cascading two identical integrators will thus result in an overall phase shift of 180Â° and an amplification of unity (p
Highly Stable 60Hz Sine-Wave Source Circuit
A highly-stable 60-Hz sine wave can be delivered with this circuit, which offers a different and much simpler approach to gaining a stable amplitude.
Two-Transistor Sine-Wave Oscillator
This oscillator uses two transistors and operates the crystal in the fundamental mode. CT and C2 should
Rf Upconverter For Tvro Subcarrier Reception
This converter uses a 40673 MOSFET to heterodyne the 5.5- to 8-MHz TVRO subcarriers to the FM
Uses a CA3140 BiMOS op amp as voltage follower, together with diodes from a CA3019 array, to convert a triangular signal (such as obtained from a function generator)
10-100kHz sine-wave oscillator
Sine Wave Oscillator
This circuit, using a minimum amount of parts generates a 10Hz sine wave [based on the component values shown]. The active components are generic devices and may be substituted as required. The passive component values set the frequency and should only be changed if a different frequency is desired. The component out lines or package styles are co
tuned sine wave oscillator circuit
This is a design circuit for sine wave oscillators that will provide both a sine and square wave output for frequencies from below 20 Hz to above 20 KHz. The frequency of oscillation is easily tuned by varying a single resistor. This circuit is controlled by two op amp, LM111 and LM101A. This is the figure of the circuit. In this circuit, an opera
digital modified sine wave inverter
Servo Circuit Controls Sine-Wave Amplitude
The figure shows a schematic for an oscillator amplitude-control servo system. The circuit creates a closed-loop system that supplies a fixed and adjustable peak-to-peak amplitude ac signal centered around 0 V. A 1-kHz sine wave, labeled AC_INPUT, is ac-coupled to an AD633 multiplier chip. Then the AC_INPUT is multiplied by the SERVO signal. The m
12V-220V Modified Sine-wave Inverter Circuit
This project is a simple 12V to 220V modified sine-wave 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 supply (UPS). The driver of the inverter is the 555 timer and 4017 decade counter. 555 timer
a better sine wave
This one is actually a bit simpler to explain: the op-amp is set up with 25. 50x amplification, i. e almost a comparator (with 50x amplification, a 50 mV input above or below the 2. 5V will drive the output to its limit). And indeed, the output signal of the op-amp looks somewhat like a heavily clipped sine wave: The 3 resistors and 3 capacitors crea
TB6556FG 3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller
The TBA120U is an i. f. Amplifier with a symmetrical FM Demodulator and an a. f. Amplifier with adjustable output voltage. The a. f. Amplifier is also provided with an output for Volume Control and an input for VCR operation. The input and output of the TBA120U are especially designed for LC-circuits, but the input CAN also be used with a ceramic Fil
modified sine wave inverter circuit