Stereo Amplifiers | Electronic Project Circuits

Posts Tagged ‘Stereo amplifiers’

Mini-stereo circuit using ic TDA2822

This circuit IC1 TDA2822 number as your primary device. The Dual Amplifier IC or IC stereo gain at 40 dB. Bandwidth 120 kHZ. That is about 2 watts and watt power supply of 1.8 to 15 volts and a current 6 mA only
When using the power supply 9 volt into this circuit.VR1 and VR2 to adjust the signal level of the right and left, the pin 7 and pin 6 of IC1.The amplifier IC1 is out of the output pin 1 and pin 3, through the C4 and C5 coupling signals to the left and right speakers.The C6, R1 and C7, R2 is to reduce noise.

Be the first to comment - What do you think? Posted by admin - November 2, 2010 at 10:47 am

Categories: Power Amplifier Tags: Low watt amplifier, Stereo amplifiers, tda2822

Mono amplifier two speaker

Typically audio amplifier stereo amplifier to a two speaker. And if a mono amplifier is a single speaker. However this circuit will be extended to the mono two speaker.But not a parallel or serial access.This makes it unnecessary impedance of the speaker has changed.But will continue to use the speaker instead of the resistance – Collection Peter (RC) of the transistor.The circuit can be expanded to 2 speaker itself.
When raising the power supply circuit and the audio to input. the audio signal coupling to through the C1 and R1 to expand with the Q1.Which Q1 serves as the Regional Pre amp amplifier to power up to a certain extent.Before sending it to Q2.Which Q2 is connected to emitter follower circuit.Act as a driver amplifier signal section from the pre amp section provides more power to drive the Q3 work. and Q3 will serve as a Regional Power amp amplifier output to the speaker.The feedback of the audio signal through the VR1 and R2 to enter the pin B of Q2.To control the stability of working for good.This circuit is an output of 40 milliwatts watts of distortion of the signal rate is at 0.1 percent.And frequency response from 15 Hz – 200 kHz.

Be the first to comment - What do you think? Posted by admin - October 1, 2010 at 2:03 am

Categories: Power Amplifier Tags: Mono amplifier, simple Audio Amplifier, Stereo amplifiers

Stereo audio amplifier using ic TDA2822

This circuit stereo power amplifier. By use ntegrated circuit number TDA2822 within be model Dual Amp give power watt at 1W +1W bandwidth expansion rates at 40dB 120kHz use power supply since 1.8V 15volt and use current 6mA feed power supply 9volt reach the circuit C7 will perform filter fire level smoothly then go to feed power supply give with IC1 at 2 input signal pin will on the left and right that come in to change VR1 and VR2 for fine decrease popularity level has of the sound already coupling change C1 and C2 from that time pass by reach input of IC1 at 7, 8, 6 pin and 5 respectively from that time a signal had that to enlarged then go out 1 pin way. Which be output of the channel a signal on the left and pin 3 ways are output of the channel on the right by a signal output of left channel and right channel will change C3 and C4 signal coupling reach a loudspeaker. By have R1, C5 and R2 C6 perform eradicate the noise of each the channel goes out.