HI FI Amplifier | Electronic Project Circuits

Posts Tagged ‘HI FI amplifier’

Bipolar Amplifier HIFI OCL 100W by BD317-BD318

If friend want Bipolar Transistor power Amplifier Circuit. , In model HIFI OCL 100W RMS. I sizes think this circuit may is the one choice interesting , use Transistor the important be BD317 and BD318 unless have transistor number BD139,BD140,BC556 then seek buy easy , when see power supply use voltage source 35V just then build not difficult For other detail as a result the a few See in Circuit.

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Be the first to comment - What do you think? Posted by admin - October 21, 2008 at 5:42 am

Categories: Power Amplifier Tags: 100 watt amplifier, Bipolar Amplifier, HI FI amplifier, Transistor amplifier

45W Single Chip Amplifier by LM3876

This circuit is based on the National Semiconductor LM3876. This device is capable of delivering as much as 56W of continuous average power into an eight ohm load with 0.1% THD from 20Hz to 20Khz. Be sure to provide an adequate heat sink for the package.
Use log pots for volume, bass and treble. A stereo amplifier can be built using ganged pots and a Stancor 402 transformer instead of the 401.

Note that the delivery of power to the speakers is primarily a function of the power supply voltage and capacity in Class A amplifier. In our case, we’re using a +/- 33 volt volt supply which is designed around a Stancor RT401 transformer. Use extreme caution when working with line voltages.
Source:http://web-ee.com/schematics/amplifiers/45watt-single-chip-amp/

Be the first to comment - What do you think? Posted by admin - January 25, 2008 at 4:17 pm

Categories: Power Amplifier Tags: Class AB Amplifier, HI FI amplifier, LM3876, Single Chip Amplifier

circuit Power Amplifier OCL 35W By NE540+2N3055

Power Amplifier OCL 35W By NE540+2N3055, MJ2955
Power Supply Voltage +25V/-25V 2A.
Output 8 OHM Speaker.

Today have Older power Amplifier OCL Circuit come to give friends get see in rows the way again. By it has the electric power about 35W at 8ohm loudspeakers and use Voltage Supply +25V and -25V at Current 2A. Which cheap systematize the sound is Class AB. By this circuit use the integrated circuit number NE540 replace the transistor has many. Then use power Transistor 2N3055 and MJ2955 at output. The detail is other invite a friend has seen in the circuit , be lucky sir.