NE5532 | Electronic Project Circuits

Posts Tagged ‘NE5532’

Class A audio amplifier 5W using IC-NE5532

Among the final amplifier we called. Regional Power Amp, will it work on several well-known as Class A, Class B, Class AB etc. Each class of the above, to honor the Class A was superior to the sound quality. best. However, class A power output to a low of 20 percent compared with a loss of power or the power consumption of about 5 times the power output. Therefore, the problem of heat Although it has not paid any audio. But anyway, despite the low-watt power, it also provides crystal clear sound quality than Class B and Class AB.
Principles of integrated amplifier class A is IC1 – NE5532 to extend signal input through the C1 to increase 15-fold. The signal output from the pin 1, signal hemisphere positive through C2 to access Q1-BD139 and Q3-2N3055. is powered by Darling ton, amplifiers and signal the intensification of the negative side of C3 through the amplifier with the Q2-BD140 and Q4-MJ2955. This is the Darling ton, too. Then the output signal from the positive side of the pin E of the Q3 and the negative side of the pin out of the E in Q4 through R10 and R11, to prevent short circuits and then output to the speakers. This will power up to 5 watts. The D1-D4 acts as a rectifier in the DC bias for Q1 and Q2. And VR1 is adjusted to a constant current bias is at work. The Q1-Q4 will be attached sheet cooled, Q3 and Q4, especially the thermal plate must be large. Because the circuit has high energy loss.

Be the first to comment - What do you think? Posted by admin - January 17, 2011 at 9:49 am

Categories: Power Amplifier Tags: BD140, Class A Amplifier, NE5532

Pre amp ic multi-purpose by NE5532

This is Pre Amp purpose of Circuit, a circuit that is easy to use and can be used to input various types of up to 4 inputs such as where a microphone that is sensitive signal about 50 mV. Position 2 for the tape. sensitive signal about 100 mV. position 3 for the tuner. Sensitive signal of about 300 mV. Position 4 for a CD with sensitive signal about 500 mV. The circuit will expand the signal output from a 1 Vrms. Signs that this is a signal strong enough to drive. to the power amp.
This circuit uses IC Op Amp NE5532, which number in the dual (Dual Opamp) is to use a stereo. You can use the legs to rest the image structure IC NE5532.
Principle of the circuit, it is when the input signal to the R1 and C1 are coupling and filter the signal to the pin 3 input of IC1. This will expand the signal a horizontal inverse Ding or extend the signal did not return. phase out to the output pin 1. by R3, R4, R5, R6 and R2 is the rate of growth and the switch S1 (Selector) to select the channel position Each box location to receive the signal strength of different inputs. For example, if selected to a position to receive the signal strength of 50 mV. And can calculate the growth rate of output from the AV = (R3/R2) 1 = 21 times.
Then be multiplied by the strength of the input signal entered into, it will be a strength. The output signal out. Each position of the input to the audio output from strength to 1 Vrms.

Be the first to comment - What do you think? Posted by admin - November 17, 2010 at 9:48 am

Categories: Pre Amplifier Tags: audio preamplifiers, NE5532, preamp IC

Class B audio amplifier 15W by NE5532 transistor

When feed power supply reach the circuit and feed input signal come in. The sound signal change C1 and R1 for signal coupling and eradicate noise oscillator go out. From that time go to reach input pin 3 non inverting of IC1. Which be op-amp IC boost up signal give the power goes up in order to go to drive give Q1 and Q2 work. Which IC1 will have expansion rate at 15 times can calculate from (R3/R2)+1.

From that time signal that enlarge already go out pin 1 of IC1 go to feed give with Q1 and Q2 which build the circuit model put-pull do signal both of section expansion positive and the section negative. By Q2 enlarge signal section way positive and build output give with Q3 which Q2 and Q3 this each other darlington for have the expansion ratio more and more.

Part Q1 signal boost up section way negative and build output signal give Q4. Which Q1 and Q4 build the circuit model Darlington also output signal of Q4 and Q3 and go out pin way E come to total up signal section positive and the section negative already go out still a loudspeaker. Because of while the circuit will work to is born the heat Q3 and Q4 thus then must add let off the heat gives with Q3 and Q4 with.