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Direct Coupled Radio Circuit

admin May 16, 2010 No Comments
Circuit Description Here is the circuit diagram of direct coupled radio. The central and core part of this circuit consists of three transistors Q1 (HEP 641), Q2 (HEP 253) and Q3 (HEP 641) as shown in the circuit diagram....
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50 Watt Transistor Amplifier Circuit

admin April 28, 2010 3 Comments
Circuit Description The circuit diagram given below is 50 W transistor amplifier. This circuit is a class-B amplifier. In this circuit, seven transistors are used. Out of these transistors, six transistors acts as preamplifiers and the rest one is...
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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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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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Simple Power Megaphone Circuit

admin August 22, 2009 3 Comments
About The Circuit   Here isthe circuit diagram of a simple power megaphone circuit. All you have to look out for is whether you get the perfect power and speaker matching. For that the transistors Q1 and Q2 (HEP...
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Simple IR Audio Link

admin August 21, 2009 3 Comments
About The Circuit   Given below is an IR audio link circuit that has been designed to transmit audio signals as far as 4 meters. The signal is passed on to the base of transistor Q1 through the resistor...
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Simple Sub-Woofer Amplifier

admin August 20, 2009 2 Comments
About The Circuit Given below is a 100 Watts sub-woofer amplifier that has been designed only with the use of transistors. There are mainly seven transistors, in which two of them are used in the pre-amplifier stage and four...
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Simple Tone Controller Circuit

admin August 20, 2009 2 Comments
About The Circuit A 2 transistor tone controller circuit is illustrated below. This simple circuit is made with the help of Baxndal tone control design. A 12 Volt DC power os required for the circuit. Also note that the...
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