Transistor Amplifier | Electronic Project Circuits

Posts Tagged ‘Transistor 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

100W Audio Amplifier Transistor by BDW84 , BDW83

The circuit works from a symmetrical ±40 VDC power supply and draws a maximum current of 2.6 A. The input circuit of the amplifier is a differential amplifier built around Q4 and Q5 that employ DC feedback thus preventing any DC voltage from appearing across the speaker with the usual destructive results. Q11 acts as a current source and ensures that the input stage draws a constant current of 1 mA.

Source:http://english.cxem.net/amplifier/amplifier25.php

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Be the first to comment - What do you think? Posted by admin - January 22, 2008 at 10:40 am

Categories: Power Amplifier Tags: 100 watt amplifier, audio amplifier, Transistor amplifier

2-TRANSISTOR AUDIO AMPLIFIER by BC108

A simple two-stage amplifier. Use any general-purpose NPN with high gain. It will drive low impedance headphones directly. A speaker will probably require further boost.
An old HAM handbook I found in the school library many years ago.

Source: http://www.geocities.com/tomzi.geo/index.htm