Introduction In this project, we’re going to make a motion sensor detector with photo capture using an ESP32-CAM. When your PIR sensor detects motion, it wakes up, takes a photo, and saves it on the … Read more
2n3904
In telecommunication, frequency modulation (FM) transfers information by varying the frequency of the carrier wave according to the message signal. This is a low-power transmitter and it uses FM waves for transmitting the sound, this transmitter … Read more
Simple FM Transmitter Circuit
In this Tutorial, we are going to make a “Simple condenser mic preamp circuit using 2N3904”. Preamplifiers (Preamp) are typically the initial stage of any amplifier circuit that picks up the extremely weak signal and … Read more
Simple Condenser Mic Preamp Circuit using 2N3904
In this Tutorial, we are going to make a “Very simple amplifier circuit using transistor 2N3904”. As you know an amplifier boosts or amplifies the low signals into the higher ones. Thus, this can be … Read more
Simple Amplifier Circuit using Transistor 2N3904
Introduction The microphone needs no introduction as we all have aware of this. And, some of us might have given speeches on this in our academic careers. Or, many of us might have a dream … Read more
Simple Microphone Mic Circuit
Street light circuits or street lamps play an important part in maintaining safety regulations in transportation networks. In this project, we are going to build a simple street light circuit using an LDR & a … Read more
Simple Street Light Circuit Using Light Dependent Resistor (LDR)
A siren enhancer circuit is an electronic circuit, with which different types of siren generators such as UM66, UM3561, UM3481, etc. work in pairs. This circuit is ideal to use in a place where there … Read more
Siren Enhancer Circuit Using IRF9540 P-Channel Power MOSFET
A microphone is an input device in any project, it is used to convert sound waves into electric waves or input the audio into any device like a computer. It captures audio by converting sound waves into an … Read more
Simple Mic Circuit
Introduction The world is growing fast in terms of technology, and as it’s growing, it’s also getting wireless. From wireless phones to wireless chargers, humans try to minimize the use of wires. So taking that … Read more
Wireless LED Circuit
Introduction Learning grows when gets executed practically. It provides a person with a clear perspective of various things. So, to grasp the understanding process of frequency modulation we are here with the intriguing project of … Read more
Simple FM Transmitter 2N3904
A multi-tone generator is often called a signal generator. A tone generator circuit is a simple electronic circuit, which has wide applications in different domains. The circuit below generally creates different levels of sound frequencies … Read more
Simple Multi-Tone Generator Circuit using Transistors
LED flasher circuits are perhaps, the simplest way for electronics to say ‘HELLO WORLD’. It is a simple electronic circuit that provides a visual cue in the form of a flashing LED. An LED flasher … Read more
Simple LED Flasher Circuits Using 2N3904 NPN Transistor
A Simple timer circuit is a crucial part of any electronic circuitry that introduces a set time delay in various switching devices. This delay of a few seconds or minutes becomes a crucial requirement for … Read more
Simple Timer Circuit Using 2N3904 NPN Transistors
Today in this post we will discuss the top 3 simple timer circuits. A timer switch or timer circuit is a timer to control any electronic switches or circuits by a timing mechanism. Here, the … Read more
Top 3 Simple Timer Circuits
A Decade Binary Counter Circuit is theoretically a motor-driver circuit. The advantages of this circuit are that it can be used to operate 2-10-step stepper motors. Let’s talk about the fundamentals of the stepper motor … Read more
Stepper Motor Driver Circuit
[post_start1] 2N3904 Pinout 2N3904 Pin Configuration Pin No Pin Name 1 Emitter 2 Base 3 Collector [inarticle_1] 2N3904 Specification Name Description Collector-Emitter Voltage (Vce) 40 V Collector-Base Voltage (Vcb) 60 V Emitter-Base Voltage (Veb) 6 V Collector Current … Read more