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Showing posts with the label MOSFET

60W MosFet Audio Amplifier

High Quality, powerful unit: 90W into 4 Ohm load Also suited as guitar or bass amplifier60W MosFet Audio Amplifier Description



To celebrate the hundredth design posted to this website, and to fulfil the requests of many correspondents wanting an amplifier more powerful than the 25W MosFet, a 60 - 90W High Quality power amplifier design is presented here. Circuit topology is about the same of the above mentioned amplifier, but the extremely rugged IRFP240 and IRFP9240 MosFet devices are used as the output pair, and well renowned high voltage Motorola's transistors are employed in the preceding stages. The supply rails voltage was kept prudentially at the rather low value of + and - 40V. For those wishing to experiment, the supply rails voltage could be raised to + and - 50V maximum, allowing the amplifier to approach the 100W into 8 Ohm target: enjoy! A matching, discrete components, Modular Preamplifier design is available here:Modular Audio Preamplifier. Notes: In the original circ…

240W MOSFET Power Audio Amplifier

240W MOSFET Power Audio Amplifier
A high power audio amplifier circuit which can output up to 240W on a 4Ω speaker.
This mosfet amplifier is built with BUZ23 and uses a 40V symmetrical power supply. Connect the NTC close to the heatsinker.
MosFet 240W power amplifier schematic

400 Watt MOSFET Operational Amplifier

Features:

HIGH INTERNAL DISSIPATION — 200 WATTSHIGH VOLTAGE, HIGH CURRENT — 200V, 20AHIGH SLEW RATE — 50V/µS4 WIRE CURRENT LIMIT SENSINGLOW DISTORTIONEXTERNAL SLEEP MODE CONTROLOPTIONAL BOOST VOLTAGE INPU
APPLICATIONS: SONAR TRANSDUCER DRIVERLINEAR AND ROTARY MOTOR DRIVESYOKE/MAGNETIC FIELD EXCITATIONPROGRAMMABLE POWER SUPPLIES TO ±95VAUDIO UP TO 400WCircuit Diagram:

500W MOSFET POWER OPERATIONAL AMPLIFIERS PA05A

Features


high internal dissipation - 250 wattshigh voltage. high curent - 100V, 30 Ahigh slew rate - 100V/uS4 wire curent limit sensiglow distorsionexternal shutdown controlDescription:
The PA05 is a high voltage MOSFET power operational amplifier that extends the performance limits of power amplifier  in slew rate and power bandwidth, while maintaining high current and power dissipation ratings. The PA05 is a highly flexible amplifier. The shutdown control feature allows the output stage to be turned off for standby operation or load protection during fault conditions. Boost voltage inputs allow the small signal portion of the amplifier to operate at a higher voltage than the high current output stage. The amplifier is then biased to achieve close linear swings to the supply rails at high currents for extra efficient operation. 
EQUIVALENT SCHEMATIC:






4 x 50W quad power amplifier TDA7564B

Features:
■ Multipower BCD technology ■ MOSFET output power stage ■ DMOS power output ■ New high efficiency (class SB) ■ High output power capability 4x28 W/4  @  14.4 V, 1 kHz, 10 % THD, 4x50 W max, power  ■ Max. output power 4x72 W/2  ■ Full I2C bus driving: – Standby – Independent front/rear soft play/mute – Selectable gain (for low noise line output  function) – High efficiency enable/disable – I2C bus digital diagnostics (including AC  and DC load detection) ■ Full fault protection ■ DC offset detection ■ Four independent short circuit protection ■ Clipping detector (2 %/10 %) ■ Linear thermal shutdown with multiple thermal  warning ■ ESD protection
Description:
The TDA7564B is a new BCD technology quad bridge type of car radio amplifier in Flexiwatt25 / PowerSO36 package specially intended for car radio applications. Thanks to the DMOS output stage the TDA7564B has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal e…