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Oscillator Circuits

7 Accurate Square Wave Oscillator Circuits

Last Updated on September 15, 2023 by Swagatam 11 Comments

IC 4046 pinout connections compressed

In this article I will comprehensively discuss 7 accurate RC square wave oscillator circuits with 50% duty cycle, by appropriately configuring the gates from various CMOS ICs such as 4001, 4011, 4093, 4046, 4047, 4016, 4060 etc. and also using op amps. Definition The square wave oscillators included in this article can be defined as […]

Filed Under: Oscillator Circuits

Digital Step Sine wave Generator Circuit

Last Updated on September 11, 2021 by Swagatam 2 Comments

digital sinewave generator circuit compressed

In this post I have explained how to build a simple yet accurate digital sine wave generator circuit, which is basically an oscillator circuit, enhanced to generate square waves through incrementing steps, which ultimately appears like a stepped sine waveform. By Ron Mackenzy The difference between analogue sine wave generator and digital sine wave generator […]

Filed Under: Oscillator Circuits

6 Useful Voltage Controlled Oscillator Circuit Explored

Last Updated on October 26, 2021 by Swagatam 9 Comments

VCO compressed

In this post I have explained how to build 6 useful voltage controlled oscillator circuits, using various op amps and integrated circuits. As the name suggests, a voltage controlled oscillator or a VCO circuit is an oscillator circuit whose output frequency can be controlled or varied through an adjustable control voltage input. This means, if […]

Filed Under: Oscillator Circuits

Sine-Cosine Waveform Generator Circuit

Last Updated on July 21, 2020 by Swagatam 2 Comments

sine cosine generator circuit

The circuit discussed below is designed to generate precision sine and cosine waveforms, which are perfectly identical with their dimensions, but are 90° out of phase. There are a variety of applications which often demand a couple of sinewave frequencies which are of the identical frequency, but 90° out of phase. Simply put, a sine […]

Filed Under: Oscillator Circuits

10 Simple Unijunction Transistor (UJT) Circuit Diagrams Explained

Last Updated on January 17, 2025 by Swagatam 21 Comments

UJT Pulse Generator

In the earlier post I have explained comprehensively about how a unijunction transistor works, in this post I will elucidate a few interesting application circuits using this amazing device called UJT. The example application circuits using UJT which are explained in the article are: 1) Square Wave Pulse Generator The first design below demonstrates a […]

Filed Under: Oscillator Circuits

1 Hz to 1 MHz Frequency Reference Generator Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 36 Comments

1 MHz time base

This circuit is an universal frequency generator which you can use in numerous frequency and time period testing applications. It is primarily well suited for a gate pulse generator in frequency counters. The circuit is capable of generating an entire range of reference frequencies such as 1 Hz, 5 Hz, 10 Hz, 50 Hz, 100 […]

Filed Under: Oscillator Circuits

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