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Telephone Pickup Pre-amplifier using 741 IC

admin April 28, 2010 2 Comments
Circuit Description The following circuit gives the circuit diagram of Telephone pickup Preamplifier. The central part of this circuit is the operational amplifier IC uA 741. This operational amplifier is used to pick up telephone signals. In this circuit,...
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Cable TV Amplifier Using Transistors

admin April 27, 2010 3 Comments
Circuit Description The circuit diagram of Cable TV amplifier has been published here. This cable TV amplifier circuit consists of two transistors Q1 and Q2 both 2SC1324 as its core part. Type number of these transistors is optional; any...
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IC TDA 2003 Amplifier

admin April 27, 2010 2 Comments
Circuit Description The circuit diagram of 10W amplifier using TDA 2003 has been published here. This simple amplifier circuit is based on a central IC TDA 2003 developed by SGS Thomson. This IC has some advanced features like short...
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Simple 250 mW Audio Amplifier

admin April 25, 2010 1 Comment
Circuit Description The circuit diagram given below shows 250 mW audio amplifier. This circuit contains three transistors Q1 (BC547), Q2 (BC327), Q3 (BC337) as central components. Transistor Q1 in this circuit acts as preamplifier where as Q2 and Q3...
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6 Watt Amplifier Circuit

admin April 22, 2010 1 Comment
Circuit Description The circuit diagram of 6W amplifier using TA 7222AP is given here. This circuit uses integrated audio amplifier IC TA 7222AP as its central part. This is a famous and widely used amplifier IC developed by Toshiba....
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Simple Pocket Headphone Amplifier

admin April 22, 2010 3 Comments
Circuit Description The circuit diagram of Pocket headphone amplifier has been given here. The core part of this circuit is the operational amplifier IC OPA 134 developed by BURR-BROWN Semiconductors. In addition to this the circuit contains some passive...
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Automatic Cooler Fan Circuit for Amplifiers

admin April 21, 2010 1 Comment
Circuit Description Automatic cooler fan for amplifiers is a circuit introduced for the purpose of saving power in amplifier circuits. This circuit switches ON and switches OFF the cooler fan of heat sink according to its temperature. The cooler...
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4×15 Watt Power Amplifier Circuit

admin April 21, 2010 3 Comments
Circuit Description 4×15 watt power amplifier consists of four channels of amplifiers. The core part of the circuit is 15W BTL X 2 channel audio power amplifier IC TA 8215 developed by Toshiba. In this power amplifier circuit, two...
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Simple Stereo Amplifier

admin April 21, 2010 2 Comments
Circuit Description The circuit of 2×32 Watts stereo amplifier consists of two channels. In both the channels the central component is the IC TDA 2050 V developed by ST Microelectronics. The audio input signal is given to each of...
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