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Message: <blockquote data-quote="pasanlaksiri" data-source="post: 141094" data-attributes="member: 2882"><img src="/styles/default/xenforo/smilies/default/yes.gif"  class="smilie" loading="lazy" alt=":yes:" title="Yes    :yes:" data-shortname=":yes:" /> Very easy to make <img src="/styles/default/xenforo/smilies/default/yes.gif"  class="smilie" loading="lazy" alt=":yes:" title="Yes    :yes:" data-shortname=":yes:" /> <img src="http://aycu08.webshots.com/image/8807/2004815451697522811_rs.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />R1    1    39K 1/4 Watt ResistorC1,C2    2    10uf 25V Electrolytic CapacitorC3    1    100uf 25V Electrolytic CapacitorC4    1    47uf 25V Electrolytic CapacitorC5    1    0.1uf 25V Ceramic CapacitorC6    1    2200uf 25V Electrolytic CapacitorU1    1    TDA1554 Two Channel Audio Amp ChipMISC    1    Heatsink For U1, Binding Posts (For Output), RCA Jacks (For Input), Wire, BoardNotes1. The circuit works best with 4 ohm speakers, but 8 ohm units will do. 2. The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed. 3. The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat. 4. Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.</blockquote>

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