A simple and flexible square wave generator is an important circuit used in signal processing, modulation and many electronic projects. In this article we will explore how a basic variable frequency oscillator works, which uses a 555 timer integrated circuit to create square wave signals that can be changed based on what the user wants. […]
Oscillator Circuits
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Simple Sawtooth Wave Generator Circuit
A simple sawtooth wave generator circuit is used in many different situations where waveforms are needed, like in oscilloscopes, TV circuits, function generators and PWM systems. The IC 555 timer chip is really popular because it is so flexible and works great for making a sawtooth wave with an easy circuit design. This circuit can […]
Simple Micro Flasher Circuit using IC CD 4093
A simple micro flasher circuit using the CD 4093 integrated circuit is an easy way to make an LED blink perfect for many indicator uses. This circuit takes advantage of the CD 4093 IC, which has four NAND Schmitt trigger gates. It runs on a 6V battery and only needs a few extra parts making […]
Timer Based Mosquito Repeller Power Saver Circuit
Mosquito repellers have become really popular for keeping those annoying bugs away. They work by using either ultrasonic sounds or chemical sprays. However, these devices can use a lot of electricity when they are always running, which is not always needed. To solve this problem a Timer Based Mosquito Repeller Power Saver Circuit has been […]
Simple Ultrasonic Mosquito Repellent Circuit
Mosquitoes are often seen as annoying little pests and they can be a big health threat because they spread diseases like malaria and dengue fever. The main idea behind this circuit is that certain sound frequencies especially ultrasonic ones (which are above 20 kHz) can keep insects like mosquitoes away. One effective way to repel […]
Simple Triangle Wave Generator Circuit using IC LM358
A triangle wave is one that rises, falls, rises again, and so on. It is a unique type of wave composed of harmonics, which are smaller waves. The triangular shape is formed by stacking these smaller waves, which are similar to building bricks. The harmonics of a triangle wave weaken far more quickly than those […]