Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
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I'm looking for a schematic diagram for a 20-watt power amplifier but unfortunately didn't find one. I will appreciate any help or recommendations from you guys. <meowth08>
A few years ago there were more than 100 car amplifier ICs made. Most produced 14W into a 4 ohm speaker just before clipping with a 13.8V supply but produced 20W when the supply voltage was about 16V. They are not made anymore.
Today there are a couple of amplifier ICs that produce 20W into 8 ohms, the LM1875 (Digikey has 24,000 in stock for $3.98 each) and the TDA2030A (Digikey has 3,500 in stock for $1.67 each).
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