CD4047 CMOS OSCILLATOR
The 4047 CMOS multivibrator is a versatile component that can generate square wave signals at various frequencies, making it ideal for clock generation, tone generation, and pulse-width modulation applications. In the astable mode, the 4047 continuously switches between its high and low states, producing a square wave output.
The frequency of oscillation can be adjusted by varying the external resistors and capacitors connected to the 4047. Typically, two resistors (R1 and R2) and a capacitor (C1) are used in conjunction with the device. The relationship between these components determines the frequency (f) and duty cycle (D) of the output waveform. The frequency can be calculated using the formula:
f = 1 / (0.693 * (R1 + 2*R2) * C1)
The duty cycle, which defines the proportion of time the output is high versus low, can be adjusted by changing R1 and R2. This flexibility allows the designer to tailor the oscillator's characteristics to meet specific application requirements.
The three outputs provided by the 4047 include the OSC output, which delivers the square wave signal, and two additional outputs that can be used for various purposes, such as driving LEDs or interfacing with other digital circuits. The outputs are typically TTL-compatible, allowing for easy integration into existing digital systems.
In summary, the 4047 multivibrator circuit configured as an astable oscillator is a robust solution for generating square wave signals in a variety of electronic applications. Its adjustable frequency and duty cycle, combined with multiple outputs, make it a valuable component for engineers and designers in the field of electronics.This CMOS square-wave oscillator is based on the 4047 multivibrator circuit, which can be used for either monostable ( one-shot ) or astable applications. In the configuration shown, the 4047 is an astable multivibrator. There are three outputs from the 4047. The first is the oscillator (OSC) output, which is connected directly to the internal oscillator c.. 🔗 External reference
Related Circuits
In the circuit, the frequency trimming component is configured such that the voltage across it is in quadrature with the voltage V0 from the bridge. This arrangement allows for adjustments to be made with minimal changes to the attenuation...
The Hartley Oscillator is an LC oscillator that derives its feedback from magnetically coupled energy in a tapped coil. Hartley oscillators are inductively coupled variable frequency oscillators. The Hartley Oscillator is a type of electronic oscillator that utilizes an inductor-capacitor...
This circuit generates a low power test signal and should not be used as a transmitter. Make sure you are within the law in the locality in which you operate this. As this was built from parts laying on...
A tuned circuit can be incorporated into the current-pulse path of a UJT oscillator to generate a 3750-Hz sinusoidal signal at output B2, using the specified component values. The UJT (Unijunction Transistor) oscillator is a type of relaxation oscillator that...
RC oscillators utilize resistors and capacitors to produce low or audio-frequency signals. Therefore, they are often referred to as audio-frequency (A.F) oscillators. RC oscillators are fundamental circuit designs utilized in various applications for generating periodic waveforms, particularly in the audio...
This circuit is designed for accurate time-base generation utilizing the commonly available 3.5795 MHz crystal, which is frequently used in telecommunication equipment. A crystal-based oscillator combined with a divider IC chain or a similar circuit, such as an ASIC,...