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------------------------------------------------------------------------- Áú¹®´äº¯À» µå¸®´Ù À¯¿ëÇÒ°Í °°¾Æ ÀÚ·á½Ç·Î 옯±é´Ï´Ù º» ÆäÀÌÁö¿¡¼± ÇÁ·Î±×·¥ÀÌ ±¸µ¿µÇÁö¾ÈÀ¸´Ï ¾Æ·¡ÀÇ ¸µÅ©·Î °¡¼Å¼ Çغ¸½Ã°í¿ä^^ Á¦¸ñ¾øÀ½ ÀÌ°÷À¸·Î °¡¼Å¿ä^^ From amp output ÇÑ±Û Âü°íºÐÀ» »ðÀÔÇÏ¿´½À´Ï´Ù... ÃÖÁ¾ÀûÀ¸·Î ½ºÇÇÄ¿ ¹Ù·Î¾Õ¿¡ À§¿Í°¨Àº ȸ·Î·Î ÀúÇ×À» ´ëÀÔÇÏ½Ã¸é µË´Ï´Ù function l_pad_calculator() { level_change_decibels = eval(document.l_pad_input.level_change_decibels.value); ohm_load = eval(document.l_pad_input.ohm_load.value); series_resistor = eval(document.l_pad_input.series_resistor.value); parallel_resistor = eval(document.l_pad_input.parallel_resistor.value); level_factor = eval(document.l_pad_input.level_factor.value); total_parallel_resistance = eval(document.l_pad_input.total_parallel_resistance.value); amplifier_power = eval(document.l_pad_input.amplifier_power.value); maximum_current_series = eval(document.l_pad_input.maximum_current_series.value); maximum_current_parallel = eval(document.l_pad_input.maximum_current_parallel.value); maximum_current_speaker = eval(document.l_pad_input.maximum_current_speaker.value); maximum_current = eval(document.l_pad_input.maximum_current.value); maximum_voltage = eval(document.l_pad_input.maximum_voltage.value); series_resistor_power = eval(document.l_pad_input.series_resistor_power.value); parallel_resistor_power = eval(document.l_pad_input.parallel_resistor_power.value); ratio_parallel_to_total = eval(document.l_pad_input.ratio_parallel_to_total.value); voltage_parallel_resistors = eval(document.l_pad_input.voltage_parallel_resistors.value); voltage_series_resistor = eval(document.l_pad_input.voltage_series_resistor.value); speaker_power = eval(document.l_pad_input.speaker_power.value); // attenuation factor document.l_pad_input.level_factor.value = Math.pow(10, (document.l_pad_input.level_change_decibels.value*.05)); // Total parallel resistance document.l_pad_input.total_parallel_resistance.value = eval(document.l_pad_input.ohm_load.value/document.l_pad_input.level_factor.value); // Parallel resistor value document.l_pad_input.parallel_resistor.value = eval(1/((1/document.l_pad_input.total_parallel_resistance.value)-(1/document.l_pad_input.ohm_load.value))); // Series Resistor document.l_pad_input.series_resistor.value = (document.l_pad_input.ohm_load.value-document.l_pad_input.total_parallel_resistance.value); // Maximum current document.l_pad_input.maximum_current.value = Math.sqrt(document.l_pad_input.amplifier_power.value/document.l_pad_input.ohm_load.value); // Maximum input voltage document.l_pad_input.maximum_voltage.value = Math.sqrt(document.l_pad_input.amplifier_power.value*document.l_pad_input.ohm_load.value); // Power in series resistor document.l_pad_input.series_resistor_power.value = eval(document.l_pad_input.series_resistor.value*document.l_pad_input.maximum_current.value*document.l_pad_input.maximum_current.value); // ratio document.l_pad_input.ratio_parallel_to_total.value = (document.l_pad_input.total_parallel_resistance.value)/(eval(document.l_pad_input.series_resistor.value)+eval(document.l_pad_input.total_parallel_resistance.value)); // voltage across parallel resistors document.l_pad_input.voltage_parallel_resistors.value = (document.l_pad_input.ratio_parallel_to_total.value*document.l_pad_input.maximum_voltage.value); // Power dissipated in shunt resistor document.l_pad_input.parallel_resistor_power.value = ((Math.pow(document.l_pad_input.voltage_parallel_resistors.value, 2))/document.l_pad_input.parallel_resistor.value); // Voltage across series resistance document.l_pad_input.voltage_series_resistor.value = eval(document.l_pad_input.maximum_current.value*document.l_pad_input.series_resistor.value); // Power dissipated in speaker document.l_pad_input.speaker_power.value = ((Math.pow(document.l_pad_input.voltage_parallel_resistors.value, 2))/document.l_pad_input.ohm_load.value); // current in series resistor document.l_pad_input.maximum_current_series.value = eval(document.l_pad_input.maximum_current.value); // shunt plus speaker parallel_plus_speaker = (eval(document.l_pad_input.parallel_resistor.value)+eval(document.l_pad_input.ohm_load.value)); // Current through shunt resistor document.l_pad_input.maximum_current_parallel.value = (document.l_pad_input.maximum_current.value*(document.l_pad_input.ohm_load.value/parallel_plus_speaker)); // Current through speaker document.l_pad_input.maximum_current_speaker.value = (document.l_pad_input.maximum_current.value*(document.l_pad_input.parallel_resistor.value/parallel_plus_speaker)); // Rounding document.l_pad_input.parallel_resistor.value = (document.l_pad_input.parallel_resistor.value*100); document.l_pad_input.parallel_resistor.value = Math.round(document.l_pad_input.parallel_resistor.value); document.l_pad_input.parallel_resistor.value = (document.l_pad_input.parallel_resistor.value/100); document.l_pad_input.series_resistor.value = (document.l_pad_input.series_resistor.value*100); document.l_pad_input.series_resistor.value = Math.round(document.l_pad_input.series_resistor.value); document.l_pad_input.series_resistor.value = (document.l_pad_input.series_resistor.value/100); document.l_pad_input.series_resistor_power.value = (document.l_pad_input.series_resistor_power.value*100); document.l_pad_input.series_resistor_power.value = Math.round(document.l_pad_input.series_resistor_power.value); document.l_pad_input.series_resistor_power.value = (document.l_pad_input.series_resistor_power.value/100); document.l_pad_input.parallel_resistor_power.value = (document.l_pad_input.parallel_resistor_power.value*100); document.l_pad_input.parallel_resistor_power.value = Math.round(document.l_pad_input.parallel_resistor_power.value); document.l_pad_input.parallel_resistor_power.value = (document.l_pad_input.parallel_resistor_power.value/100); document.l_pad_input.speaker_power.value = (document.l_pad_input.speaker_power.value*100); document.l_pad_input.speaker_power.value = Math.round(document.l_pad_input.speaker_power.value); document.l_pad_input.speaker_power.value = (document.l_pad_input.speaker_power.value/100); document.l_pad_input.maximum_current_series.value = (document.l_pad_input.maximum_current_series.value*100); document.l_pad_input.maximum_current_series.value = Math.round(document.l_pad_input.maximum_current_series.value); document.l_pad_input.maximum_current_series.value = (document.l_pad_input.maximum_current_series.value/100); document.l_pad_input.maximum_current.value = (document.l_pad_input.maximum_current.value*100); document.l_pad_input.maximum_current.value = Math.round(document.l_pad_input.maximum_current.value); document.l_pad_input.maximum_current.value = (document.l_pad_input.maximum_current.value/100); document.l_pad_input.maximum_current_parallel.value = (document.l_pad_input.maximum_current_parallel.value*100); document.l_pad_input.maximum_current_parallel.value = Math.round(document.l_pad_input.maximum_current_parallel.value); document.l_pad_input.maximum_current_parallel.value = (document.l_pad_input.maximum_current_parallel.value/100); document.l_pad_input.maximum_current_speaker.value = (document.l_pad_input.maximum_current_speaker.value*100); document.l_pad_input.maximum_current_speaker.value = Math.round(document.l_pad_input.maximum_current_speaker.value); document.l_pad_input.maximum_current_speaker.value = (document.l_pad_input.maximum_current_speaker.value/100); document.l_pad_input.voltage_parallel_resistors.value = (document.l_pad_input.voltage_parallel_resistors.value*100); document.l_pad_input.voltage_parallel_resistors.value = Math.round(document.l_pad_input.voltage_parallel_resistors.value); document.l_pad_input.voltage_parallel_resistors.value = (document.l_pad_input.voltage_parallel_resistors.value/100); document.l_pad_input.voltage_series_resistor.value = (document.l_pad_input.voltage_series_resistor.value*100); document.l_pad_input.voltage_series_resistor.value = Math.round(document.l_pad_input.voltage_series_resistor.value); document.l_pad_input.voltage_series_resistor.value = (document.l_pad_input.voltage_series_resistor.value/100); document.l_pad_input.total_parallel_resistance.value = (document.l_pad_input.total_parallel_resistance.value*100); document.l_pad_input.total_parallel_resistance.value = Math.round(document.l_pad_input.total_parallel_resistance.value); document.l_pad_input.total_parallel_resistance.value = (document.l_pad_input.total_parallel_resistance.value/100); document.l_pad_input.maximum_voltage.value = (document.l_pad_input.maximum_voltage.value*100); document.l_pad_input.maximum_voltage.value = Math.round(document.l_pad_input.maximum_voltage.value); document.l_pad_input.maximum_voltage.value = (document.l_pad_input.maximum_voltage.value/100); } Calculates Series and Shunt Resistors Information For You To Enter: (À¯´ÖÀÇ ÀúÇ×)Speaker and Amp Output Impedance? Ohm (¿øÇÏ´Â °¨¼âºÐ..ÀϹÝÀûÀ¸·Î 6dbÀÌÇϱÇÀå))Desired Attenuation? DB (¿¥ÇÁÀÇ ÀÔ·Â/´ë·« ¿¥ÇÁÀÇ Á¤°ÝÃâ·ÂÂë)Amplifier Power Output? Watts Results: R1 Series Resistor = Ohms R2 Parallel Resistor = Ohms (rÀúÇ×ÀÌ Àâ´Â Ãâ·Â)R1 Series Resistor Power = Watts (r2ÀúÇ×ÀÌ Àâ´Â Ãâ·Â)R2 Parallel Resistor Power = Watts (°á°úÀûÀÎ ½ºÇÇÄ¿ÀÇ Ãâ·ÂºÐ/±×·¯´Ï±ñ °¨¼âºÐÀÌ°Ú³»¿ä)Speaker Power = Watts Á¶°ÇÀ» ³ÖÀ¸¼ÌÀ¸¸é..¾Æ·¡ÀÇ º¸Æ°À»^^ ¸®¼Â:´Ù½ÃÇϽǶ§ Extra info: Shunt || Speaker = Ohms Amplifier Output Current (@ Full Power) = Amps Current through Series Resistor (@ Full Power) = Amps Current through Shunt Resistor (@ Full Power) = Amps Current through Speaker (@ Full Power) = Amps Amplifier Output Voltage (@ Full Power) = Volts Voltage across Shunt and Speaker (@ Full Power) = Volts Voltage across Series Resistor (@ Full Power) = Volts The resistor and power values that are calculated should be rounded to theclosest available standard value. The power rating should be rounded up,and selecting a power rating that is at least one and a half times the powervalue calculated is suggested.
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