In this post we will understand about a simple power amplifier circuit using AC176 and AC126 type PNP germanium transistor in OTL (output transformer less) design. Also, this circuit gives audio power directly to speaker without output transformer, it is low voltage circuit and works with 9V battery. Therefore, the circuit design is easy and […]
Low Impedance Driver Circuit using BJT Transistor
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 […]
How to Replace IC TDA2050 with LM1875 IC in Audio Amplifier Circuit
In this article, I will explain How to Replace IC TDA2050 with LM1875 IC in Audio Amplifier Circuit. Many people use TDA2050 for 35W amplifier, but it is considered obsolete and has been discontinued by the original manufacturer but it might be available in online market as many user wants this IC for better sound […]
Transistor Based Audio Amplifier Circuit
A Transistor Based Audio Amplifier Circuit is a simple and useful audio circuit that increases weak audio signals into a louder sound signal. This circuit uses four transistors, namely two BC547 NPN transistors and two BC557 PNP transistors, because of its simple design, students and beginners can easily understand and build it. Moreover, this circuit […]
12V to 16V Adjustable DC to DC Step-up Converter Circuit
This circuit is a simple and useful DC to DC step-up converter built around the LM2577-ADJ IC and the main purpose of this circuit is to increase a low DC input voltage into a higher regulated DC output voltage. Therefore, we can use it in battery-powered projects, automotive electronics, portable devices, LED drivers and other […]
LM2596HV Adjustable DC Voltage Regulator Circuit
The LM2596HV is a high-voltage adjustable step-down switching regulator IC which works similar to the standard LM2596, but it supports higher input voltage up to 60V. Because of this, it is suitable for transformer-based power supply circuits, industrial DC lines, battery charging systems and adjustable bench power supplies. In this LM2596HV Adjustable DC Voltage Regulator […]