Features. • Compact packaging supports slimmer set designs. • Series designed from 20 up to W ( W) and pin- compatibility ( to W have 18 pins). AF Power Amplifier (Split Power Supply) ( W min, THD = %) AF Power Amplifier Split Power Supply 45W + 45W min THD = % AF Power Amplifier Split Power Supply 50 W + 50 W + 50W min THD = %. (PDF) STKV Datasheet PDF, Ordering number: ENA Thick Film Hybrid IC STKV AF Power Amplifier (Split Power Supply) ( W min, THD.
|Language:||English, Spanish, German|
|Distribution:||Free* [*Registration needed]|
Part Number: STKV, Sanyo, File Type: PDF, Document: STKV PDF AF Power Amplifier (Split Power Supply) ( W min / THD = %). STKV AF Power Amplifier (Split Power Supply) ( W min / THD = %) Components datasheet pdf data sheet FREE from itutvimaser.tk Datasheet. STKV datasheet, cross reference, circuit and application notes in pdf format.
Even though each of them have 2 transistors ,2 resistors and 1 diode inside ,only three pins ,base emitter and collector are coming out.
Rest are connected internally. So its quite OK to assume each of them as transistor for ease. Use a well regulated and filtered power supply.
Connect a 10K POT in series with the input as volume control if you need. Not shown in circuit diagram. All electrolytic capacitors must be rated at least 50volts. Power supply for this circuit.
In addition it require minimum components and a built in mute function. Headphone Amplifier Circuit — This is a simple circuit which uses only 3 transistors, that can be used to drive your headphone.
It can be easily built by any one and can be powered using a 3 volts battery. It can deliver 18 Watts output power to 8 ohms speaker or 30 watts to 4 ohms speaker; you can do it the way you like it. Another advantage of this circuit is the minimal use of components.
It can deliver 40 watts of output power to an 8 ohm speaker. You need a proper heat sink for the desired reliability of this circuit.
The frequency characteristics determine relation of a gain of amplifier to frequency; phase characteristics - the phase shift of an output signal on relation to input signal in frequency function of an input signal. The frequency - phase characteristic summarizes frequency and phase characteristics of the amplifier in the field of a range of reproduced frequencies.
All amplifiers alter input signals, generally in two ways: they make them stronger amplify them, and they add characteristics which did not exist in the original signal. These undesirable characteristics are lumped together and called distortion. Noise can be considered a type of distortion. One common type of distortion is harmonic distortion. Harmonics of a signal are signals which are related to the original or fundamental by an integer non decimal number.
A pure tone sine wave signal has no harmonics; it consists of only one single frequency. If pure tone signal was applied to the input of an amplifier, we would upon measurement with special test equipment find that the output signal of the amplifier was no longer pure. Careful measurements would likely show that several new frequencies have appeared.
These new frequencies are almost certainly to be integer multiples of the original tone; they are the harmonics of the original signal. In a good amplifier, the harmonics will be much weaker than the original tone. By much weaker, we mean on the order of a thousand times for decent amplifiers.
Intermodulation distortion is the second major type of distortion that is often specified for amplifiers. Intermodulation distortion is much more objectionable to the human ear, because it generates non-harmonically related extra signals which were not present in the original.
Basically, two pure tones are simultaneously applied to the input of the amplifier. If the amplifier were perfect, the two tones and only the two tones would be present at the amplifier output. In the real world, the amplifier would have some harmonic distortion as described above , but careful observation of the output signal using laboratory equipment would reveal that there are a number of new tones present which cannot be accounted for as a result of harmonic distortion.
These new tones are called beat products or sum and difference frequencies, and are a result of the interaction of the two pure tones within the amplifier.
No amplifier is perfect, all have some non linear characteristics. Whenever two signals are applied to a nonlinear system, new signals in addition to the original two are generated. For a good amplifier, the new signals are very small in relation to the two original tones.
All amplifiers are generally rated for Total Harmonic Distortion or THD , usually at full power output over a given frequency band with a particular load. Good values are anything less than 0.
When an amplifier is measured for THD, a pure tone is applied to the input and the output is measured with special test equipment. The energy of the pure tone is measured, and the energy of the harmonics is measured. Those two values are compared, and a THD rating is calculated.
Harmonic distortion although certainly undesirable is one of the more tolerable types of distortion as long as it is kept reasonably low. Therefore, for reduction of nonlinear distortions target capacity of the amplifier are artificial limit in comparison with the greatest possible output power.
As sensitivity of the amplifier understand value of the sine wave input voltage, necessary for obtain of the maximal output power. Frequently, some manufacturers indicate value of a nominal input voltage.
A nominal input voltage is a sine wave voltage applied to an input of the amplifier for obtain of nominal output power. It is meant, that the volume regulator of the amplifier should be exposed on the maximal value. Besides linear and nonlinear distortions, any real amplifier generates the additional signals.
Because of it, on an output of the amplifier there is a signal distinct from zero, even in absence of an entrance signal. This signal called as output noise and can be considered as the sum of infinite number of sine wave voltage not only harmonious including in a sound range of frequencies.
Sources of internal noise of the amplifier are thermal noise of resistors, and also shot, flickering and thermal noise of active components transistors and diodes. Quantitatively a value of noise on an output describe through effective value of noise Uno. As the voltage of noise grows simultaneously with a range of reproduced frequencies, it is necessary to specify frequencies within the limits of which measurements of noise on an output of the amplifier were made.
If the range of frequencies is not underlined, own noise are measured within the limits of a working range of frequencies of the amplifier.