To begin with, this circuit shows a small audio amplifier which uses two BJT NPN transistors, they works with low impedance output like small speaker or earphone. Also, the circuit takes weak input signal and makes it stronger and runs on DC supply from +6V to +18V, as the circuit is simple, low cost and […]
DIY Projects
IC LM309 Based 5 Volt Power Supply Circuit
Today, many electronic circuits require a stable 5V DC supply; however, the AC mains voltage is much higher, so the circuit must reduce the voltage before converting it to DC. Furthermore, voltage regulation is important, so this circuit uses a voltage regulator, also this article explains about simple IC LM309-based 5V power supply circuit. Moreover, […]
5V 0.5A Regulated Power Supply Circuit
Power supply is the heart of any electronic circuit, without stable voltage the circuit will fail; sometimes 7805 IC is not enough and also sometimes current requirement is higher, therefore, discrete regulator is useful. This 5V 0.5A Regulated Power Supply Circuit gives 5V output at 0.5A current and it uses TIP3055 transistor and IC TL431 […]
Transistor Based 5V Linear Power Supply Circuit
A power supply is vital in electronics because most circuits require a stable DC voltage. Since the mains supply provides AC voltage, the power supply must convert this alternating current into the direct current that sensitive components rely on to function This Transistor Based 5V Linear Power Supply Circuit gives regulated 5 volts DC and […]
5V Regulated Power Supply Circuit using Transistors
A 5V regulated power supply is very important in electronics because it runs many digital circuits, such as microcontrollers, sensors, and logic ICs; also this 5V regulated power supply circuit using transistors provides a stable 5V DC output. The circuit uses transistors for voltage regulation, which allows it to handle more current than IC regulators, […]
220V AC Live Detection and Interface Circuit
Handling 220V AC directly is very dangerous, but still we need to know mains is ON or OFF; so, this 220V AC Live Detection and Interface Circuit is useful as it solves this safety problem easily. This circuit safely senses the mains voltage and sends a clean logic-level signal, then an optocoupler provides isolation, keeping […]