john121 Posted September 13, 2021 Report Share Posted September 13, 2021 Hi Thanks for reading. Okay I want to build a simple audio amplifier with absolute minimum components. So far with my amateur attempts i have built a single stage amplifier using a 2sc5200 transistor, with a 1uf capacitor and 1000 ohm resistor as an input stage, but it sounds like a glorified headphone amp, very little output about half a watt. Do you have any minimal component designs which can put out about 5 watts, or if this is not possible a two stage amplifier consisting of a driver transistor followed by an output transistor, again minimal components. I have 2sc5200 transistors so will appreciate any designs incorporating these. Thanks Quote Link to comment Share on other sites More sharing options...
HarryA Posted September 13, 2021 Report Share Posted September 13, 2021 The 2sc5200 is a large "High-Fidelity Audio Output Amplifier" it would be used as the last stage in a mullti-transistor amplifier. What is the input in to your amplifier? Consider using an op amplifier that would give you a simple amplifier that could use a low level input and give you 5 watts or more output. The LM383/TDA2002 is an 8 watt power amplifier that uses 5 capacitors and 2 resistors. You can drive a 4 ohm speaker directly with It. As it is an old op amp you may find a more modern version of it. The LM383 is available on Ebay. Quote Link to comment Share on other sites More sharing options...
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