Oscillator Circuits

A Frequency Divider Circuit take signal with high frequency and give signal with lower frequency. It changes the signal in way to reduce frequency. Two common ICs used for this: IC 4017 Decade Counter: IC 555 Timer: Circuit Working: Parts List: Category Item Quantity Resistors (All resistors are 1/4 watt unless specified) 10k 1 47k […]

Simple White Noise Generator Circuit is DIY project. It make sound like radio hiss or static. Circuit is used for sound effect, privacy noise and testing audio tools. Noise come from electronic parts. We can use resistor or reverse transistor for noise. Capacitor remove too high or too low sound. Circuit Working: Parts List: Component […]

The easy way to change sensor voltage (analog) to digital (1 and 0) is by using Analog to Digital Converter Circuit using IC 555. This method is cheap and easy for good learning. IC 555 chip can make simple ADC with low cost. In this circuit 555 IC work like ON/OFF pulse maker. Two pins […]

To design Design Crystal Oscillator Circuit need know some basic things. Use crystal to make steady frequency. Choose right crystal and connect with other parts like resistor and capacitor. Be sure circuit give right signal for our device. Easy steps help us build good working circuit. Circuit Working: Let us learn about this circuit with […]

Simple Hulda Clark Zapper Circuit using IC 555 make electric current with set frequency for healing. It uses IC 555 chip. This type of circuit are also called Hulda Clark zapper which was made in 2003. Circuit Working: Parts List: Category Description Quantity Resistors 1k, 3.3k 1/4 watt 2 each Capacitors Ceramic 4.7nF 1 Ceramic […]

This article show how to make a Simple Morse Key Circuit using IC 555. It is an easy circuit and is good for Morse code practice. IC 555 can work in many ways. In this project it work as astable multivibrator. That means it make signal by itself and there is no need for outside […]