FreeCalypso > hg > freecalypso-schem2

annotate venus/src/periph/buzzer_circuit.v @ 77:c273bf8a93cb

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precharge current limiting resistor nailed down
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 05 Dec 2021 03:07:45 +0000
parents 4a7db02ddd3e
children
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4a7db02ddd3e buzzer circuit implemented
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1 module buzzer_circuit (GND, VBAT, Digital_input);
4a7db02ddd3e buzzer circuit implemented
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2
4a7db02ddd3e buzzer circuit implemented
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3 input GND, VBAT;
4a7db02ddd3e buzzer circuit implemented
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4 input Digital_input;
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4a7db02ddd3e buzzer circuit implemented
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6 wire Buzzer_neg;
4a7db02ddd3e buzzer circuit implemented
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4a7db02ddd3e buzzer circuit implemented
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8 buzzer_wrap buz (.Pos(VBAT), .Neg(Buzzer_neg));
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4a7db02ddd3e buzzer circuit implemented
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10 clamp_diode_pair D_pair (.Signal(Buzzer_neg), .Pos_rail(VBAT), .Neg_rail(GND));
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4a7db02ddd3e buzzer circuit implemented
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12 transistor_ext_bias npn (.E(GND), .B(Digital_input), .C(Buzzer_neg));
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13
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14 endmodule