AmplifierCircuits

TDA8922   g eneral description: The TDA8922 is a high efficiency class-D audio power amplifier with very low dissipation.  The typical output power is 2 × 25 W. The device is available in the HSOP24 power package with a small internal heatsink and in the DBS23P through-hole power package. Depending on the supply voltage and load conditions, a very small or even no external heatsink is required. The amplifier operates over a wide supply voltage range from ±12.5 to ±30 V and consumes a very low quiescent current. TDA8922  features : High efficiency (∼90%) Operating supply voltage from ±12.5 to ±30 V Very low quiescent current Low distortion Usable as a stereo Single-Ended (SE) amplifier or as amono amplifier in Bridge-Tied Load (BTL) Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL) High output power Good ripple rejection Internal switching frequency can be overruled by an external clock No switch-on or swi...

LM3886   g eneral description: According to National Semiconductor, the LM3886 is a high performance 150W Audio Power Amplifier with Mute. The performance of the LM3886, say NS, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPIKe) protection circuitry, puts in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). The LM3886T comes in an 11 (staggered-) lead non-isolated TO220 package. We put the LM3886T schematic and an existing printed circuit board as a basis. For test purposes, the prototype of the amplifier was powered by a stabilized ±35-V supply. A maximum undistorted output power of about 63 watts into 8 ohms was obtained at a drive level of 1 Vrms. Dropping the load impedance to 4 ohms pushed the output power to no less than 108 watts. In practice, these power levels can be taken to mean ‘music power’, but do remember that the amplifier will not normally be powered from a regulated supply!...

TDA7490   g eneral description: The TDA7490 is a dual audio class D amplifier assembled in Flexiwatt 25 package; it is specially designed for high efficiency application mainly for TV and Home Stereo sets. TDA7490 features:  25W + 25W OUTPUT POWER: RL = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY WIDE SUPPLY VOLTAGE RANGE (FROM ±10 TO ±25V) SPLIT SUPPLY TURN OFF/ON POP FREE ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION ACROSS THE LOAD THERMAL OVERLOAD PROTECTION EXTERNALLY SINCHRONIZABLE BRIDGE CONFIGURATION TDA7490 amplifier diagram, circuits: TDA7490 Audio Amplifier 2x25W TDA7490 layout, pcb: TDA7490 layout, pcb TDA7490 layout, pcb

General Description: The TDA1908 is a monolithic integrated circuit in  12 lead quad in-line plastic package intended for  low frequency power applications.The mounting is  compatible with the old types TBA800, TBA810S,  TCA830S and TCA940N. Its main features are: Features: flexibility in use with a max output curent of 3A  and an operating supply voltage range of 4V to  30V; protection against chip overtemperature; soft limiting in saturation conditions; low ”switch-on” noise; low number of external components; high supply voltage rejection; Circuit Diagram 8W AUDIO AMPLIFIER TDA1908

TDA7294 general description: This circuit described here uses two cis tda 7294 for use in stereo (2 x 80Watts) or bridge mode (1x 180 Watts), to configure this setting just four jumpers. To facilitate mounting the circuit has power supply attached. The power is kind of simple symmetrical with a bridge rectifier 6A, and two large electrolytic capacitors , 10000μF the 22000μF/50v. This Power supply will for the two modules. The processor is recommended 22-0-22 to 28-0-28 / 5A, depending on the quality of the transformer is recommended at least 6 amps of current. TDA7294 features: High power performances with limited supply voltage level. Considerably high output power even with high load values (i.e. 16 Ohm). Rl= 8 Ohm,  Vs = ±25V  Pmax = 150 W Rl=16Ohm,  Vs = ±35V  TDA7294 circuit diagram: TDA7294 circuit diagram TDA7294 layout: TDA7294 layout TDA7294 pcb: TDA7294 pcb Datasheet for TDA7294:   Download Searches rel...

TDA7294 Audio Amplifier Circuits TDA7294 is a monolithic integrated circuit in Multiwatt15 package, with high output power (up to 100W) intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4W and 8W loads even in presence of poor supply regulation, with high Supply Voltage Rejection. TDA7294 Amplifier Circuits TDA7294 Amplifier Circuits pcb TDA7294 Amplifier Circuits layout

200W Hybrid Audio Amplifier Circuit - c onnecting two TDA2030 thru cheap power transistors we can create a amplifier wich can deliver a higher power. With the components value from the schematic the total amplifier gain is 32 dB. The speaker can be 2 ohm instead of 4 ohm if we use the TIP transistors. TDA 2030 is produced by SGS Ates and is a complete audio amplifier. AB class of the final amplifier cand deliver up to 14W on 4 ohm at a +-14V power supply. With a proper designed power supply this audio amplifier can output 200W. Active components: IC1, Ic2 TDA 2030 T1, T3 = BD 250, TIP 36 T2,T4 = BD 249, TIP 35 D1 … D4 = 1N4001 200W Hybrid Audio Amplifier Circuit