Showing posts with label 2. Show all posts
Showing posts with label 2. Show all posts
Wednesday, November 19, 2014
Active Crossover 2 Way Schematics
Therefore this architecture represents the simplest access I could booty and still get the adapted outcome.The band akin audio arresting enters the absorber area it is astern out of phase.This is to atone for the filters which will alter the appearance afresh appropriately abiding the arresting to it’s able phase. The filters are more-or-less accepted low and aerial canyon filters appropriately however, added capacitors and resistors accept been added in adjustment to get the altruism bottomward to a minimum appliance alone E12 components.
This alive Cantankerous over is adequately beeline forward. It consists of a absorber and two 3rd order, 18 dB per octave filters. One low canyon and the added high. The cantankerous over abundance is set at 2Khz and is advised for AEK’s 400watt per access PA/Keyboard Amp systems. Obviously alone one access is apparent here.
This ambit may not be of awfully abundant use to anyone as it was accurately advised to clothing the applications. It is not capricious or switchable for two reasons. Firstly, it didn’t charge to be back the backdrop of the apostle arrangement were already known. And secondly, the added complication was put into the accurateness of the crossover rather than it’s flexibility. The filters are akin in account to anniversary added as able-bodied as can be accepted appliance alone E12 components. If switching were to be active to accord a ambit of abundance options, a accommodation would accept to be fabricated on clarify accuracy.
The alone added way to accomplish a accepted crossover architecture and advance accurateness would apparently be to use Switched capacitor clarify architecture blocks. In theory, two 18or 24dB per octave filters could be complete such that they tracked anniversary added by actuality bound to the aforementioned clock. This would be a nice agreement but I haven’t had the befalling to prove this technology for this affectionate of application. My primary affair was the breach through of switching babble appliance such a design.
Friday, November 7, 2014
9 Volt 2 Ampere DC Power Supply Circuit Diagram
There is little to be said about this circuit. All the work is done by the regulator. The 7809 can deliver up to 2 amps continuous output whilst maintaining a low noise and very well regulated supply. The circuit will work without the extra components, but for reverse polarity protection a 1N5400 diode (D1) is provided at the input, extra smoothing being provided by C1. The output stage includes C2 for extra filtering, if powering a logic circuit than a 100nF (C3) capacitor is also desirable to remove any high frequency switching noise.Circuit diagram:
Parts:C1 = 100uF-25V electrolytic capacitor, at least 25V voltage rating
C2 = 10uF-25V electrolytic capacitor, at least 6-16V voltage rating
C3 = 100nF-63V ceramic or polyester capacitor
IC = 7809 Positive Voltage Regulator IC
D1 = 1N5400 Diode
C2 = 10uF-25V electrolytic capacitor, at least 6-16V voltage rating
C3 = 100nF-63V ceramic or polyester capacitor
IC = 7809 Positive Voltage Regulator IC
D1 = 1N5400 Diode
Sunday, October 5, 2014
2 1 Channel Systems Dual Power Amplifier TDA7240 and TDA1517
The main problem with the design of stereo amplifier with a total bass driver, is that the signals of left and right channels, sooner or later, are summarized. As a result of merely adding up, the separation between channels is reduced to a minimum and violated the very idea stereofonii.
The most efficient method of summation, known today - signal active smesitelyami - filters with high input impedance, which is often used by field-effect transistors. Subsequent cascades enhance increase the amplitude of the signal. I tried to make some other way - most to weaken the signals of channels and to make their addition, as late as possible, before entering signal with high sensitivity (TDA 7240 - 46dB). The second chip-TDA 1517, serves as a mid-frequency driver. I must say that the problem is not solved completely, the separation between channels is desirable to do more, subjective listening showed a contraction of panoramas, lack of air, which is inherent in amplifiers with independent channels.
Listen to music using the device somewhat tiresome, but it very effectively transmits audio material of films and computer games. In any case, the amplifier has shown significant superiority over the multimedia system Logitech Z - 340, which is one of my friends recently bought for $ 60. Another nice time - managed to realize the possibility of simultaneous volume in all channels, which will agree, very convenient. Thus, the scheme was recommended for the recurrence of 2.1 Channel Systems, with the prospect of it improving.
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The most efficient method of summation, known today - signal active smesitelyami - filters with high input impedance, which is often used by field-effect transistors. Subsequent cascades enhance increase the amplitude of the signal. I tried to make some other way - most to weaken the signals of channels and to make their addition, as late as possible, before entering signal with high sensitivity (TDA 7240 - 46dB). The second chip-TDA 1517, serves as a mid-frequency driver. I must say that the problem is not solved completely, the separation between channels is desirable to do more, subjective listening showed a contraction of panoramas, lack of air, which is inherent in amplifiers with independent channels.
Listen to music using the device somewhat tiresome, but it very effectively transmits audio material of films and computer games. In any case, the amplifier has shown significant superiority over the multimedia system Logitech Z - 340, which is one of my friends recently bought for $ 60. Another nice time - managed to realize the possibility of simultaneous volume in all channels, which will agree, very convenient. Thus, the scheme was recommended for the recurrence of 2.1 Channel Systems, with the prospect of it improving.
Monday, September 15, 2014
2 X 50W ICs amplifier with STK4191
The above is a stereo amplifier circuit based on IC STK4191 with 2 X 50Watt output power 8 ohm impedance. And besides that you can use some of the IC can also be applied in this series include the STK4101, 4111, 4121, 5131, 4141, 4151, 5161, 4171, 4181, and 4191. Required supply voltage from 12 Volt to 35 Volt DC.Part List :
R1 = 22K
R2 = 22K
R3 = 560R
R4 = 56K
R5 = 1K
R6 = 1K
R7 = 100R
R8 = 2K
R9 = 2K
R10 = 4.7R
R11 = 2K2
R12 = 2K2
R13 = 4.7R
R14 = 100R
R15 = 56K
R16 = 560R
C1 = 0.1uF
C2 = 0.1uF
C3 = 100uF
C4 = 100uF
C5 = 100uF
C6 = 0.1uF
C7 = 47uF
C8 = 47uF
C9 = 0.1uF
C10 = 100uF
C11 = 100uF
U1 = STK4191
Saturday, August 30, 2014
2 x 2 3 Watts power amplifier schematics
Do not misunderstand, this series is one of several series of power amplifiers that have output / low output power. This amplifier output is only possess more or less 4Watt. Or 2 X 2Watt stereo power amplifier. Minimum required voltage is not less than 3 volts and a maximum voltage of no more than 14 volts, and voltage must be rectified and filtered to obtain the maximum of the processed audio.
Component List :
R1 = 2,7R
R2 = 2,7R
C1 = 1uF
C2 = 1uF
C3 = 100uF
C4 = 220uF
C5 = 100uF
C6 = 100uF
C7 = 220uF
C8 = 0.1uF
C9 = 0.1uF
C9 = 0.1uF
C10 = 470uF
C11 = 470uF
U1 = ULN3750B
Monday, August 25, 2014
2 Way Active Crossover Circuit
This is the schematic diagram of 2-way active crossover schema. The "active" word means that the schema use active component and need power supply to work. Take a note that the input of this schema is not connected to the output of power amplifier. This crossover schema module must be placed before the amplifier schema. The "Low Out" output connected to a power amplifier and the low speaker [Woofer], while the "High Out" output is drive the power amplifier of high speaker [Tweeter].
Parts List
R1 = 100Kohms
R2,3,4,5,6 = 37.5ohms [33K+4.7K]
R7 = 75Kohms[150K//150K
R8 = N.C
R9,10,11,12,13,14,15,16 = 10Kohms
R17,18 = 47Kohms
R19,20 = 47ohms
C1 = 4.7uF/100V MKT
C2,3,4,5,6,7,12,13 = 1nF 100V MKT
C8,9,10,11,14,15 = 100nF 100V MKT
C16 = 2.2uF/100V MKT
C17 = 470nF 100V MKT
C18,19 = 47uF/25V
J1,2,3 = 2pin conn. 2.54mm pin step
J4 = 3pin conn. 2.54mm pin step
IC1,2,3 = NE5532 , TL072
TR1 = 100Kohms trim. or pot.
TR2,3 = 47Kohms trim. or pot.
All the Resistors is 1,2% 1/4W metal film
Circuit Source: 2-Way Active Crossover Circuit with Linear Phase Response
Thursday, August 21, 2014
2 x 6 W stereo power amplifier
Description
The TDA1517 is an integrated class-B dual output amplifier in a plastic single in-line medium power package with fin (SIL9MPF), a plastic rectangular-bent single in-line medium power package with fin (RBS9MPF) or a plastic heat-dissipating dual in-line package (HDIP18). The device is primarily developed for multi-media applications.
Circuit Diagram
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| 2 x 6 W stereo power amplifier |
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