This unit is ideal for powering car radios, tape players or car CD and DVD players from the power grid, if its power is not more than 20 W per channel. The transformer must have a 2 A secondary and the 2N3055 power transistor must be mounted on a good heat radiator. The 2 200 uF capacitor must have a working voltage of at least 25 V, and the 470 pF capacitor must have at least 16 V.

 


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