Base 18W bridge amplifier circuits TDA2003 (double) Schemati Diagram with Description

LM12 Op amp can output a current of up to 10A. The LM12 contained in TO-3, 4-pin, trousers, may be in order to prevent overheating or power, to support the safety device inside the 800W.

40V LM12C or LM12CL maximum voltage 30 V can be used on most of you.

Copper at 40 rotation 1mm, coil L1 is coil in 4 quarter. If you have LM12CL use, I recommend x 22V transformer of the two. You need to print the 712A. The filter capacitor must be at least 20,000 UF.

LM12 must be ordered by a screw of a large heat sink to cool the body in the form of electricity and remote (<1.50 C / W =)
Amplifier circuit LM12

LM12 amplifier PCB layout



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