STK6153 power amplifier circuit production, SKT6153 Power Amplifier
Keywords: STK6153 amplifier circuit production
STK6153 power amplifier circuit production
STK3048 and STK6153 Department of Japanese Sanyo Company thick film amplifier integrated circuit. STK3048 is a front-level voltage amplification integrated circuit; STK6153 is a primary current amplification integrated circuit. STK3048 is a 15-foot dual-channel single-column thick film package, which is connected to (8), but is insulated from the inner circuit. (8) There is a certain shielding effect on the internal circuit after the foot. This thick film does not have to be loaded with a heat exchanger when working. Be
There are two-stage, input-stage zone-protected differential amplifiers, and two diodes of the differential tube base are protected by two diode amplifiers in the STK3048. The contrast of the collector is a series phase compensation network prevents the input stage from generating transient distortion due to sudden signal. A set of mirrored current sources are connected between the two episode electrodes. The purpose of this circuit is to linearly reverse the right input tube current to form two subgraduated current sources to the left input tube, and perform current excitation on the column. The main voltage amplification is a total co-transmissive circuit, and the signal is widely enlarged, and the direct coupling between the input, the output stage provides impedance matching; the upper tube is linearly outputted the amplification current to reduce the opening of the stage. Lost, and provide greater excitation power for the column. This two-stage magnifying tube is complemented by constant current source, and the power ripple suppression is strong. STK6153 is a 10-foot single-column single column thick film package (two pieces of double channels), and the inner circuit has been electrically insulated from the exposed radiator. The STK6153 integrates a constant pressure source offset, unsatisfactory push and unstoppable composite current amplification circuit. With full complementary symmetrical structure, high rate, high precision, high power, low noise, and other excellent characteristics. Due to the built-in complex of the constant voltage source, the unlatten high power tube is always in the best working state, which has excellent temperature compensation. The complementary output of the thick film block is designed into an inverted Dolinton composite circuit, and outputs the output impedance in the form of a collector opening. The power amplifier circuit consisting of STK3048 and STK6153 is shown in Figures 3-41 (power supply, protection circuit), and the inner circuit of the front and rear grade IC in kind. Pre-grade small capacitors can be used in German WIMA or ERO quality capacitors, and the power filter is used for the large electrical solution with Nissan Marcon Nippon, Chemicon Nitsuko, RubyCon brand's capacitance. Each large electrolysis is connected in parallel with WiMa0.1uf ~ 0.33uf. Capacitance to improve frequency characteristics. The circuit does not need to be commissioned, you can work. In the general listening sensation, the frequency bands in the full range look very balanced, dynamic, low frequency, low distortion, fast transient response, purity, and small noise is particularly small. Circuit sinusoidal power; 2X100W, distortion
The STK3048 and STK6153 internal circuits are simpler, and their sound quality is very good. However, the design of the peripheral route and the choice of peripheral components have a large impact on the sound quality of the IC, and this amplifier uses the circuit shown in Figures 3-42. Be
(1) The GM control volume is used, and the volume potentiometer is connected to the gain control point of IC3 (NE5532), and its negative feedback depth is changed to change the volume size. STK3048 works in the optimal stability. There is almost no sliding noise when adjusting the volume. More importantly, the dynamic range is still constant, and the music details are performed in the big volume, and there is no feeling of water with water. (2) The constant pressure method is used to drive the load in constant current, linear resistance R and R 'changing amplifier, so that the transient characteristics of the amplifier are improved, enhance the strength of the bass and the sharpness of the treble. (3) Cancel the loop negative feedback capacitor, IC4 (NE5532) and peripheral components constitute an output midpoint zero servo circuit. Used to servo STK3048 2, (14), which causes the STK6153 output DC potential to cancel the feedback capacitance, and improve the high and low frequency parsing of the amplifier. The amplifier is subjectively listening: the treble is fine, the middle sound is bright, the bass is full, the zona level is clear, the harmonic distortion is small, the noise is small, the noise is low, the dynamic range is extremely wide. Since the output power is large, pay attention to the power supply to be used, and the STK6153 radiator should not be too small. The op amp IC is powered by a stand-alone active servo power supply. In addition, the amplifier must install the speaker protection circuit.
Our other product:
