TDA2003 is a robust automotive grade audio amplifier IC. It supports up to 28 volts of operating voltage and can withstand input voltage fluctuation of 40 volts. A TDA2003 amplifier […]
Simple dekstop audio amplifier by A6283 I.C
I got two creative speakers from a friend who didn’t need that. Since they are only speakers, and not with inbuilt amplifiers, it’s not possible to run those speakers from PC/mobile […]
Subwoofer Lowpass Filter circuit using uA741 Single Op-Amp Ic
This is the simplest DIY low pass filter for subwoofer using uA741 single op-amp ic. The circuit performs really well compared to it’s price. The cut off frequency of this […]
Simple Preamplifier for microphones, tape heads, etc
This circuit consists of a single transistor as amplifier and it gives a nice amplification to weakest and unipolar signals for feeding to a real amplifier. The center of this […]
Simple 3 Band Graphic Equalizer with BC548
This is a simple 3band graphic equalizer for audio amplifiers. There are three controls for three ranges, low frequency,mid frequency,and high; or simply for Bass, Treble and Mid range. This […]
High Performance LA4446 Stereo Audio Amplifier Circuit
LA4446 is of similar series IC as LA4440, but it is meant for dual or stereo 5.5Watt RMS outputs. While 4440 gives 6Watt outputs at dual mode, this gives almost […]
Miniature USB powered amplifier circuit for Laptops
There’s been a strategy in market of buying USB powered speakers for laptops. These speakers usually drives power from one available USB port and inputs audio signal from headphone port, […]
Easy Loudspeaker circuit for telephone
This below circuit is a easy handsfree telephone receiver system. This doesn’t have dialing circuit so, it’s not a total phone replacement circuit, but it’s just only a loudspeaker system […]
TDA2030A Amplifier Circuit used in home theaters
TDA2030A or TDA2030 is a well used class AB audio amplifier IC. TDA2030A amplifier circuit is mostly used in nowadays home theatre systems for it’s some good features. Small size IC(package […]
Bass treble control without any IC, Transistor
This low cost bass treble circuit consists of some capacitors, resistors, and two T/C pot for BASS and TREBLE control. this circuit can be made without even a veroboard. You […]