Overview We have previously released designs utilizing a transistor junction in Zener breakdown mode as a noise source. Those familiar with reverse-biased transistors are aware that the noise voltage amplitude produced this way is highly … Read more
bc547
Overview In today’s tutorial, we are going to make a “Dual Channel 12 Volt Relay Driver Circuit” using BC547 Transistors. A simple and user-friendly method for interfacing two relays for switching applications in your project … Read more
Dual Channel 12v Relay Driver Board Circuit
Introduction If you own a classic car with a positive earth body, then you know the challenges of maintaining its electrical system. That’s why we’re excited to share a new, improved battery charger circuit concept … Read more
Battery Charger for Positive Earth Cars
Introduction If you have ever left a lead-acid battery unused for a long time, you may have found it dead or damaged when you tried to use it again. Fortunately, there is a simple and … Read more
Self-Regulating Battery Charger Circuit
Introduction Solar energy is a clean and renewable source of power that has many applications in our daily lives. One such application uses solar energy to power a simple circuit that can be used to … Read more
Simple Solar Plant Watering Alarm Circuit
Introduction In the modern era where everything relies on technology, using a simple lock key for security is insanely backward. Even the intruders of today’s world use technology. Therefore, we must have to use some … Read more
Door Security Alarm Circuit using Magnetic Reed Switch
Introduction In electronics, the joule thief circuit is the voltage booster circuit that converts the input voltage into a greater periodic voltage value. You may have known this before, but do you know that joule thief … Read more
How to make a Joule Thief Circuit
Introduction Hearing is no doubt a great blessing. It’s something that we all should be thankful to our lord. However, we also must have to count and take care of those who can’t hear. And, … Read more
Cheap & Small Hearing Aids Circuit
In this tutorial, we are going to make a “4 transistor audio amplifier circuit”. The amplifier is simple to construct and is adaptable to your individual requirements. This transistor audio amplifier circuit might be ideal … Read more
4 Transistor Audio Amplifier Circuit
Introduction A 3-phase signal generator circuit is a powerful tool for any engineer or technician working in electrical and electronic systems. This circuit can produce a precise and stable three-phase signal, which can be used … Read more
3-Phase Signal Generator Circuit
Introduction Knowledge matures when practically gets implemented. It allows a person to get a clear sense of many things. So, to understand the process of frequency modulation we are here with the interesting project of … Read more
Multipurpose FM transmitter Circuit – DIY
In this tutorial, we are going to make a “Simple Soil Dryness Detector Circuit”. Soil is the most important natural gift after water and sunlight that this planet has provided us, without which the persistence … Read more
Simple Soil Dryness Detector Circuit
Introduction A non-contact voltage identifier or detector is an electrical analyzer that assists with recognizing voltage. Voltage presence is helpful data to have while troubleshooting requires. Thus, in this tutorial, we have decided to make … Read more
Non-Contact AC Voltage Detector Circuit
Introduction Have you ever thought that how the automatic doors of stores and malls work? How does it get open when there is a person? And have you ever visited countries where street lights get … Read more
Simple PIR Sensor Circuit SL100
Introduction To get the definite frequency and amplitude in various electronic circuits, oscillator circuits become part of those circuits. Thus it plays a crucial role in different microcontroller applications. These oscillators are classified into many … Read more
Simple Colpitts Oscillator Circuit
Introduction The electronics are nothing without the amplifier circuits. Since amplifiers are one of the basic and important circuits, therefore, we try our best to come up with different types of amplifiers. Sometimes with easy … Read more