ᑭᓲᕙ LED PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᖃᓄᐃᒻᒪᓪᓗ ᐊᑐᖅᑕᐅᒐᔪᒃᐸ?
PWM dimming, ᓇᐃᒡᓕᒋᐊᖅᓯᒪᔪᖅ Pulse Width Modulation dimming, ᐊᑐᖅᑕᐅᓪᓗᐊᑕᓕᖅᐳᖅ ᐊᑐᖅᑕᐅᒐᔪᒃᖢᓂᓗ ᓄᓇᕐᔪᐊᓕᒫᒥ LED ᖃᐅᒻᒪᖅᑯᑎᓄᑦ, ᐱᓗᐊᙳᐊᖅᖢᓂ LED driver ᐊᒻᒪ ᐆᒻᒪᖅᑯᑎᖃᐅᑎᓄᑦ. ᐃᓗᓕᓪᓗᐊᑕᖓᒍᑦ, ᐊᑐᖅᑕᐅᔪᖅ ᐊᐅᓚᑦᑎᓂᕐᒥᑦ ᖃᐅᒪᓂᖓᓂᑦ LED ᓱᒃᑲᓕᔪᒥᑦ ᐃᑭᑦᑎᓂᒃᑯᑦ ᖃᒥᑦᑎᓂᒃᑯᓪᓗ. ᐊᔾᔨᒋᙱᖦᖢᓂᐅᒃ ᐊᑐᖅᑕᐅᕙᒃᑐᑐᖃᖅ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ, ᒥᒃᖠᒋᐊᖅᑎᑦᑎᕙᒃᖢᓂ ᖃᐅᒪᓂᖓᓂᒃ ᐊᑦᑎᒃᓯᕚᓪᓕᖅᑎᑦᑎᕙᓪᓕᐊᖏᓐᓇᖅᖢᓂ ᒫᓐᓇ ᐃᖏᕐᕋᔪᒥᒃ LED−ᑯᑦ, PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᐊᑐᖅᐸᒃᐳᖅ ᖃᕆᑕᐅᔭᒃᑰᖓᔪᒥᒃ ᓇᓗᓇᐃᒃᑯᑕᕐᒥᒃ ᐊᔾᔨᖓᓂᒃ ᐊᑐᕈᒪᓪᓗᓂ. ᑖᓐᓇ ᐱᒻᒪᕆᐅᔪᖅ ᐊᔾᔨᒌᙱᓐᓂᖓ ᑐᓂᓯᔪᖅ PWM−ᑯᓐᓂ ᐅᓄᖅᑐᓂᒃ ᐱᕚᓪᓕᕈᑎᓂᒃ, ᑕᐃᒪᐃᓐᓂᖓᓄᑦ ᐊᑐᖅᑕᐅᔪᒪᓂᖅᓴᐅᕗᖅ ᐊᒥᓱᓄᑦ ᐊᑐᖅᑕᐅᔪᓄᑦ, ᐃᒡᓗᕐᔪᐊᓄᑦ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐊᒻᒪ ᖁᙱᐊᖅᑕᐅᔪᓄᑦ ᐱᖁᑎᓄᑦ ᓂᐅᕕᖅᐸᒃᑐᓄᑦ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐊᒻᒪ ᓴᖅᑭᔮᖅᑐᓄᑦ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ. ᑐᙵᕕᖓ ᐊᔪᕐᓇᙱᑦᑐᑯᓘᕗᖅ, ᑭᓯᐊᓂ ᐊᑐᓕᖅᑎᑕᐅᓂᖓ ᐃᓚᖃᖅᐳᖅ ᐅᔾᔨᖅᓱᑦᑎᐊᕐᓂᕐᒥᒃ ᓇᓕᒧᒌᒃᑎᑦᑎᓂᕐᒥᒃ ᐅᐊᔭᒨᖅᑐᓂᒃ ᐊᒻᒪ ᐃᓄᐃᑦ ᑕᐅᑐᒃᑕᖏᓐᓂᒃ ᑎᑭᐅᑎᔪᒪᓪᓗᑎᒃ ᐃᖏᕐᕋᑦᑎᐊᖅᑐᒥᒃ, ᖃᒥᑦᑕᙱᓪᓗᓂ, ᐊᒻᒪ ᑕᖅᓴᖏᑦ ᐊᔾᔨᒌᒡᔫᒥᔪᓂᒃ ᑕᖅᓴᖃᑦᑎᐊᖁᓪᓗᒋᑦ. ᑐᑭᓯᐅᒪᓂᖅ ᖃᓄᖅ PWM ᐊᐅᓚᓲᖑᖕᒪᖔᑦ, ᓴᙱᓂᖏᓐᓂᒃ, ᐊᒻᒪ ᓈᒻᒪᙱᓕᐅᕈᑎᐅᑐᐃᓐᓇᕆᐊᓕᖕᓂᒃ ᐱᔭᕆᐊᖃᒻᒪᕆᒃᐳᖅ ᑭᓇᑐᐃᓐᓇᕐᒧᑦ ᐱᓕᕆᖃᑕᐅᔪᓄᑦ ᓇᓗᓇᐃᖅᓯᓂᕐᒧᑦ, ᐋᖅᑭᒃᓱᐃᓂᕐᒧᑦ, ᐅᕝᕙᓘᓐᓃᑦ ᐃᓕᐅᖅᑲᐃᓂᕐᒧᑦ ᐱᐅᔪᒻᒪᕆᖕᓂᒃ LED ᖃᐅᒻᒪᖅᑯᑎᓂᒃ.
ᖃᓄᖅ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᐱᓕᕆᓲᖑᕙ ᐅᐊᔭᒨᖅᑐᑎᒍᑦ?
ᑐᙵᕕᓪᓗᐊᑕᖓ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓ LED ᐅᐊᔭᒨᖅᑐᒥ ᑕᑯᒥᓇᑦᑎᐊᖅᑐᖅ ᑐᑭᓯᓇᑦᑎᐊᖅᖢᓂᓗ. ᑕᐅᑐᙳᐊᕈᒃ ᐊᔪᕐᓇᙱᑦᑐᑯᓗᒃ ᐅᐊᔭᒨᖅᑐᖅ ᐃᓗᓕᖃᖅᖢᓂ ᑕᐃᒪᐃᖏᓐᓇᐅᔭᖅᑐᒥᒃ ᐆᒻᒪᖁᑎᒥᒃ, LED−ᓂᒃ, ᐊᒻᒪ MOS transistor (ᑕᐃᒪᐃᑦᑐᖅ ᐅᐊᔭᒨᖅᑐᖅ ᐃᑭᑦᑕᐅᑎ). ᑕᐃᒪᐃᖏᓐᓇᐅᔭᖅᑐᖅ ᐆᒻᒪᖅᑯᑎ ᐱᑐᒃᓯᒪᕗᖅ anode (positive side) LED−ᒧᑦ, ᖃᐅᔨᒪᓇᑦᑎᐊᖅᖢᓂ ᐅᐊᔭᒨᖅᑐᖅ ᒪᑐᔭᐅᒑᖓᑦ, LEDs ᐱᕙᒃᖢᑎᒃ ᓱᕐᕌᙱᑦᑐᒥᒃ, ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑎᐊᖅᑐᒥᒃ ᐃᖏᕐᕋᓂᐅᔪᒥᒃ. cathode (ᐱᐅᙱᑦᑐᖅ) LED ᐊᒃᖢᓈᖓ ᑲᑎᙵᕗᖅ ᑯᕕᕝᕕᖓᓄᑦ MOS transistor-ᒧᑦ, ᓇᑭᙶᕐᓂᖓᓗ transistor ᑲᑎᙵᓪᓗᓂ ᓄᓇᒧᑦ. ᒪᑐᖓ MOS transistor ᐊᐅᓚᑦᑎᔾᔪᑕᐅᕗᖅ. PWM ᓇᓗᓇᐃᒃᑯᑕᖅ, ᖃᕋᓴᐅᔭᒃᑰᖅᑐᖅ ᑭᑉᐹᕆᒃᑐᖅ ᐃᖏᕐᕋᔪᖅ, ᐃᓕᔭᐅᓪᓗᓂ ᑖᔅᓱᒧᖓ ᐃᓯᕐᕕᖕᒧᑦ. ᑖᓐᓇ ᑭᑉᐹᕆᒃᑐᖅ ᐃᖏᕐᕋᓂᖓ ᓂᑭᑦᑖᖅᐸᒃᐳᖅ ᖁᑦᑎᒃᑐᒥ ᓴᙱᓂᓕᖕᒥ (ᓲᕐᓗ, 5V) ᐊᒻᒪᓗ ᐊᑦᑎᒃᑐᒥ ᓴᙱᓂᓕᖕᒥ (0V). PWM ᓇᓗᓇᐃᒃᑯᑕᖓ ᖁᑦᑎᒃᑐᒦᑎᓪᓗᒍ, MOS transistor "ᐃᑭᑎᖦᖢᒍ", ᐱᐊᓂᒃᓯᓪᓗᓂ ᐅᐊᔭᒨᖅᑐᒥᒃ ᐱᕕᖃᖅᑎᑦᑎᓪᓗᓂᓗ ᐃᖏᕐᕋᐃᓐᓇᖅᑐᒥᒃ LED−ᑎᒍᑦ, ᖃᐅᒪᑦᑎᐊᓕᖅᖢᓂ. PWM ᓇᓗᓇᐃᒃᑯᑕᖓ ᐊᑦᑎᒃᓯᒑᖓᑦ, transistor "ᖃᒥᙶᖅᐳᖅ", ᓱᕋᐃᓪᓗᓂ ᐅᐊᔭᒨᖅᑐᒥᑦ, LED−ᖏᓪᓗ ᖃᒥᑦᑎᐊᖅᖢᑎᒃ. ᓱᒃᑲᓕᔪᒥᒃ ᐃᑭᑎᑉᐸᒃᖢᒍ ᖃᒥᙶᖅᐸᒃᖢᓂᓗ ᓱᒃᑲᓕᓗᐊᖅᑐᒥ ᐃᓄᖕᒧᑦ ᐃᔨᒧᑦ ᖃᐅᔨᔭᐅᔪᓐᓇᙱᖦᖢᓂ, LED−ᖑᔪᑦ ᑲᔪᓰᓐᓇᖅᑐᒥᒃ ᐃᑯᒪᖅᑰᔨᕙᒃᐳᑦ, ᑭᓯᐊᓂ ᖃᐅᒪᓂᖓ ᐋᖅᑭᒃᑕᐅᓯᒪᓪᓗᓂ ᐊᔾᔨᒌᙱᓐᓂᖏᓐᓄᑦ "ᐃᑭᓐᓂᖓ" ᐊᒻᒪ "ᖃᒥᙶᕐᓂᖓ". ᑖᓐᓇ ᖃᔅᓯᐅᓂᕆᔭᖓ ᖃᐅᔨᒪᔭᐅᕗᖅ ᐱᓕᕆᓂᕆᔭᐅᕙᒃᑐᖅ. 100% ᐃᖏᕐᕋᓂᖓ ᑐᑭᖃᖅᐳᖅ ᖃᐅᒪᔪᖅ ᐃᑯᒪᐃᓐᓇᐅᔭᖅᑐᖅ, ᖃᐅᒪᑦᑎᐊᖅᑎᓪᓗᒍ. 50% ᐃᖏᕐᕋᓂᖓ ᑐᑭᖃᖅᐳᖅ ᓇᑉᐸᖓᓂ ᖃᒥᙶᖅᐸᒃᖢᓂ ᐊᒻᒪ ᓇᑉᐸᖓᓂ ᖃᒥᙶᖅᖢᓂ, ᖃᐅᒪᓂᖓ 50%−ᖑᓪᓗᓂ.
ᑭᓲᕙᑦ ᐱᕚᓪᓕᕈᑎᓪᓗᐊᑕᑦ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒧᑦ LED−ᓄᑦ?
PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᐅᔾᔨᕐᓇᖅᓯᕚᓪᓕᖅᓯᒪᕗᖅ ᐱᔪᒥᓇᖅᑐᓂᒃ ᐱᕚᓪᓕᕈᑎᒃᓴᓂᒃ ᑭᐅᓯᑲᐅᑎᒋᔪᓂᒃ ᑭᒡᓕᒋᔭᐅᔪᓂᒃ ᐊᓯᖏᓐᓂᒃ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓂᒃ. ᓯᕗᓪᓕᖅ ᖁᕕᐊᒋᔭᐅᓛᖑᓪᓗᓂᓗ ᐊᑲᕐᕉᑎᒋᔭᐅᔪᖅ ᐋᖅᑭᐅᒪᑎᑦᑎᔪᓐᓇᕐᓂᖓᓂᒃ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑎᐊᖅᑐᓂᒃ ᑕᖅᓴᓕᖕᓂᒃ ᑕᖅᓴᓕᖅᓱᐃᔪᓐᓇᕐᓂᓕᒫᖏᓐᓂᒃ. ᐊᔾᔨᙳᐊᓂᒃ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ, ᒥᒃᖠᒋᐊᖅᑎᑦᑎᓂᖅ ᐆᒻᒪᖅᑯᑎᒥᒃ LED−ᒧᑦ ᐊᓯᔾᔨᖅᓯᔪᓐᓇᖅᐳᖅ ᑕᖅᓴᖓᑕ ᐆᓇᕐᓂᖓᓂᒃ. ᐆᒃᑑᑎᒋᓗᒍ, ᖃᑯᖅᑕᖅ LED ᑐᖑᔪᕈᔪᒃᑐᒥᒃ ᐊᐅᐸᕈᔪᒃᑐᒥᒡᓘᓐᓃᑦ ᑕᖅᓴᖃᕈᓐᓇᖅᐳᖅ ᐊᑦᑎᖕᓂᖅᓴᒥ ᐃᖏᕐᕋᓂᐅᔪᒥ. PWM-ᑯᑦ ᑕᒪᑐᒥᖓ ᐊᑐᙱᑦᑎᐊᖅᐳᑦ ᓲᖃᐃᒻᒪ LED ᐊᐅᓚᑕᐅᖏᓐᓇᐅᔭᕐᒪᑦ ᐋᖅᑭᒃᓯᒪᓂᕆᔭᖓᓄᑦ ᐃᑯᒪᑎᓪᓗᒍ. ᖃᐅᒪᓂᖓ ᖃᒥᒃᑲᓗᐊᕈᓂ 10%-ᒧᑦ 90%-ᒧᓪᓘᓐᓃᑦ, "ᐃᑭᓐᓂᖓ" ᖃᐅᒻᒪᖅᑯᑏᑦ ᐊᑕᖏᑦᑎᐊᖅᑐᑦ, ᑕᒻᒪᖅᓯᒪᙱᖦᖢᑎᒃ, ᓇᓗᓇᐃᖅᓯᓪᓗᑎᒃ ᑕᖅᓴᖓᑕ ᐆᓇᕐᓂᖓ ᐊᒻᒪ ᑕᖅᓴᖓ ᓱᕐᕌᓗᐊᙱᖦᖢᓂ. ᑕᐃᒪᐃᓐᓂᖓᓄᑦ PWM ᓂᕈᐊᒐᒃᓴᑐᐊᑦᑎᐊᖑᕗᖅ ᐊᑐᖅᑕᐅᔪᓄᑦ ᑕᖅᓴᖏᑦ ᐱᐅᓛᖑᓂᖏᓐᓄᑦ, ᓲᕐᓗ ᑕᑯᔭᒐᖃᕐᕕᖕᒥ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ, ᑕᕐᕆᔮᒃᓴᓕᐅᕐᓂᕐᒧᑦ ᐊᒻᒪ ᑕᓚᕖᓴᒃᑯᑦ ᓴᖅᑭᑎᑦᑎᓂᕐᒧᑦ, ᐊᒻᒪ ᖁᑦᑎᒃᑐᒥ ᐃᒡᓗᐃᑦ ᐋᖅᑭᒃᓯᒪᓂᖏᓐᓂ ᐃᓕᐅᖅᑲᐃᓂᕐᒧᑦ. ᐊᐃᑉᐸᖓ ᐊᑲᕐᕉᑎᕐᔪᐊᖑᖃᑕᐅᔪᖅ ᐱᐅᔪᒻᒪᕆᖕᒥᒃ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓᓄᑦ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᖦᖢᓂ ᐊᒻᒪ ᓯᕕᑐᔪᒧᑦ ᐋᖅᑭᒋᐊᕈᓐᓇᖅᖢᓂ. PWM ᑐᙵᕕᖃᕐᓂᖓᓄᑦ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑐᒥᒃ ᖃᕋᓴᐅᔭᒃᑰᖅᑐᒃᑯᑦ ᖃᖓᒃᑰᕐᓂᖓᓂ, ᑎᑭᐅᑎᔪᓐᓇᖅᐳᖅ ᐊᐅᓚᑦᑎᑦᑎᐊᕐᓂᕐᒥᒃ ᐱᓕᕆᓂᕆᕙᒃᑕᖓᓂᒃ, ᐱᕕᒃᓴᖃᖅᑎᑦᑎᓪᓗᓂ ᐃᖏᕐᕋᑦᑎᐊᖅᑐᒥᒃ, ᐊᓯᔾᔨᖅᐸᓪᓕᐊᙱᑦᑐᒥᒃ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒥᒃ 100%-ᒥᑦ 0.1%-ᒧᑦ ᐊᑦᑎᖕᓂᖅᓴᒧᓪᓘᓐᓃᑦ. ᑕᐃᒪᓐᓇᑎᒋ ᓇᓕᖅᑯᑦᑎᓯᒪᑦᑎᐊᕐᓂᖅ ᐊᔪᕐᓇᕈᔪᒃᐳᖅ ᐊᔾᔨᙳᐊᓂᒃ ᐊᑐᕐᓗᓂ. ᑭᖑᓪᓕᖅᐹᒥ, ᐊᑐᓕᖅᑎᑕᐅᒑᖓᑦ ᓈᒻᒪᒃᑐᒥᒃ ᖁᕝᕙᓯᖕᓂᖅᓴᒥᒃ (200 Hz−ᖑᒐᔪᒃᑐᖅ), PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓ ᑕᑯᔭᒃᓴᐅᙱᑦᑎᐊᖅᐳᖅ ᐃᓅᑉ ᐃᔨᖓᓄᑦ, ᑕᐃᒪᐃᓐᓂᖓᓄᑦ ᖃᒥᑦᑕᙱᖦᖢᓂ ᐃᔨᒧᑦ ᑕᖃᓇᙱᖦᖢᓂ ᑕᖃᓗᐊᕐᓇᙱᖦᖢᓂᓗ.
ᖃᓄᐃᒻᒪᑦ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓ ᓄᖅᑲᖅᑎᑦᑎᕙᒃᐸ ᑕᖅᓴᖏᓐᓂᒃ LED−ᓂᒃ?
ᖃᓄᐃᓐᓂᐅᕙᒃᑐᖅ ᑕᖅᓴᖓ ᐊᓯᔾᔨᖅᐸᓪᓕᐊᕙᖕᓂᖓ LED−ᓂ ᐊᔾᔨᒌᙱᑦᑐᓂ ᐃᖏᕐᕋᓂᐅᔪᓂ ᖃᐅᔨᒪᔭᐅᑦᑎᐊᖅᐳᖅ ᐃᓕᖅᑯᓯᕆᔭᐅᕙᒃᑐᒥ semiconductor physics−ᒥ. ᖃᐅᒪᓂᐅᑉ ᑕᑭᓂᖓ LED chip-ᒧᑦ ᑐᙵᕕᖃᒐᓛᒃᐳᖅ ᒫᓐᓇ ᐅᖁᒪᐃᓐᓂᖓᓂᒃ ᐃᖏᕐᕋᔪᒥᒃ. ᐊᑦᑎᒃᓯᒋᐊᕈᕕᐅᒃ ᐆᒻᒪᖅᑯᑎ ᐊᔾᔨᖃᙱᑦᑐᒥ ᖃᒥᑦᑎᕙᓪᓕᐊᔾᔪᑎᒥ, ᐊᑐᖅᑕᐅᓪᓗᐊᑕᖅᑐᖅ ᑕᑭᓂᖓ ᐊᓯᔾᔨᕈᓐᓇᖅᐳᖅ, ᐱᑎᑦᑎᓗᓂ ᐊᓯᔾᔨᕐᓂᐅᔪᒥ ᐃᓱᒪᒋᔭᐅᔪᒥ ᑕᖅᓴᖓᓂ. ᑕᒪᓐᓇ ᐅᔾᔨᕐᓇᓗᐊᙳᐊᖅᐳᖅ ᖃᑯᖅᑕᓂ LED−ᓂ, ᑕᒪᒃᑯᐊ ᑐᖑᔪᖅᑕᐃᑦ ᖄᖃᖅᖢᑎᒃ phosphor ᖄᓕᖅᓯᒪᓪᓗᑎᒃ. phosphor-ᐅᑉ ᐊᓯᔾᔨᖅᐸᓪᓕᐊᓂᖓᑕ ᐊᑑᑎᖃᕐᓂᖓ ᐊᒃᑐᖅᑕᐅᔪᓐᓇᕆᕗᖅ ᓴᙱᓂᖓᓄᑦ ᑐᖑᔪᖅᑕᐅᑉ ᖃᐅᒪᓂᖓ ᐆᓇᖅᓯᑎᓪᓗᒍ. PWM-ᑯᑦ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖏᑦ ᑕᒪᑐᒥᙵ ᓴᙲᑦᑎᓯᒪᑦᑎᐊᖅᐳᑦ. ᐊᓯᔾᔨᖅᓯᙱᑦᑎᐊᖅᑐᖅ ᐃᖏᕐᕋᓂᐅᔪᒥᒃ. ᑕᐃᒪᙵᓕᒫᖅ, ᐊᑕᖏᖅᑐᒥᒃ ᐆᒻᒪᖅᑯᑎᒥᒃ ᐃᑭᑎᑦᑎᕙᒃᐳᖅ ᖃᒥᙶᖅᑎᑦᑎᕙᒃᖢᓂᓗ. ᑕᐃᒪᐃᓐᓂᖓᓄᑦ, "ᐃᑭᓐᓂᓕᒫᖓᓂ", LED ᐊᐅᓚᕙᒃᐳᖅ ᐋᖅᑭᒃᓯᒪᓂᖓᑕ ᖃᓄᐃᓕᖓᓂᖓᒍᑦ, ᖃᐅᒪᑎᑦᑎᕙᒃᖢᓂ ᑐᕌᕆᔭᒥᓄᑦ, ᓱᕐᕌᓗᐊᙱᑦᑐᒥ ᑕᖅᓴᖓᑕ ᐆᓇᕐᓂᖓᓂ. ᐃᓅᑉ ᐃᔨᖓ ᐊᒻᒪ ᖃᕋᓴᖅ ᐃᓚᓕᐅᔾᔨᕙᒃᐳᖅ ᓱᒃᑲᓕᔪᒥᒃ ᑕᖅᓴᓕᖕᓂᒃ ᖃᐅᒪᐃᓐᓇᖅᑐᓂᒃ, ᖃᐅᔨᕙᒃᖢᑎᒃ ᐊᔾᔨᒌᒃᑐᓂᒃ ᑕᖅᓴᓕᖕᓂᒃ ᖃᓄᑐᐃᓐᓇᖅ ᑖᖅᓯᕙᓪᓕᐊᒐᓗᐊᖅᐸᑕ. ᑖᓐᓇ ᐱᔾᔪᑕᐅᓪᓗᐊᑕᖅᐳᖅ ᖃᓄᐃᒻᒪᑦ PWM ᐱᐅᓛᖑᕗᖅ ᐋᖅᑭᐅᒪᑎᑦᑎᓂᐊᕐᓗᓂ ᑕᖅᓴᖏᓐᓂᒃ ᒪᓕᑦᑎᐊᕐᓂᕐᒥᒃ LED ᖃᐅᒻᒪᖅᑯᑎᓄᑦ. ᑲᑎᙵᔪᓐᓃᖅᑎᑦᑎᕙᒃᐳᖅ ᐊᐅᓚᑦᑎᓂᕐᒥᒃ ᖃᐅᒪᓂᖓᓂᒃ LED chip−ᒥᒃ, ᑐᓂᓯᓪᓗᓂ ᐊᐅᓚᑦᑎᓂᕐᒥᒃ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑐᒧᑦ, ᖃᕆᑕᐅᔭᒃᑰᖓᔪᒧᑦ ᖃᐅᔨᓴᐅᑎᒧᑦ.
ᑭᓲᕙᑦ ᐊᑲᐅᙱᓕᐅᕈᑕᐅᔪᑦ ᐊᒃᓱᕈᕐᓇᕐᓂᖏᓪᓗ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒧᑦ?
ᐅᓄᖅᑐᓂᒃ ᐱᕚᓪᓕᕈᑎᖃᕋᓗᐊᖅᑎᓪᓗᒋᑦ, PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᐊᒃᓱᕈᕐᓇᖅᑑᕗᖅ ᓈᒻᒪᙱᓕᐅᕈᑎᖃᑐᐃᓐᓇᕆᐊᖃᖅᖢᓂᓗ, ᓴᓇᔨᒻᒪᕆᑦ ᐅᔾᔨᖅᓱᑦᑎᐊᕐᓗᑎᒃ ᑲᒪᒋᔭᕆᐊᖃᖅᐸᒃᖢᓂᔾᔪᒃ ᐋᖅᑭᒃᓯᒪᓂᒃᓴᖓᓄᑦ. ᐊᑲᐅᙱᓕᐅᕈᑕᐅᒐᔪᖕᓂᖅᐹᖑᔪᖅ ᑐᓴᖅᓴᐅᔪᓐᓇᕐᓂᖓ ᓂᐱᖅᑯᖅᑐᓂᖓ. ᓱᒃᑲᓕᔪᒥᒃ ᐊᓯᔾᔨᖅᐸᓪᓕᐊᓂᖓ ᐆᒻᒪᖅᑯᑎᐅᑉ LED−ᑯᑦ ᐊᒻᒪ LED−ᑯᑦ ᓇᖕᒥᓂᖅ ᐃᓚᖏᓐᓂᒃ ᐊᐅᓚᑎᑦᑎᔪᓐᓇᖅᐳᑦ. ᑕᒪᓐᓇ ᓱᓕᓗᐊᙳᐊᖅᐳᖅ ᒪᑯᓄᙵ ᐅᐊᔭᒨᖅᑐᓄᑦ ᓴᙱᓂᓕᖕᓄᑦ, ᐊᑐᖅᑕᐅᒐᔪᒃᐸᒃᑐᓄᑦ ᐊᓂᕙᓪᓕᐊᔪᓄᑦ LED−ᓄᑦ ᐱᔾᔪᑕᐅᓪᓗᑎᒃ ᒥᑭᑦᑑᓂᖏᓐᓄᑦ ᐱᐅᔪᓄᓪᓗ ᓄᑭᓪᓚᐅᑎᓄᑦ ᖃᓄᐃᓕᖓᓂᖏᓐᓄᑦ. Ceramic Capacitors ᓴᓇᔭᐅᒐᔪᒃᐳᑦ ᐱᖁᑎᓂᒃ piezoelectric properties-ᓂᒃ, ᑐᑭᖃᖅᖢᓂ ᑎᒥᒃᑯᑦ ᐊᓯᔾᔨᖅᐸᓪᓕᐊᕌᕐᔪᒃᐸᒃᖢᑎᒃ ᓴᙱᓂᖓ ᐊᑐᖅᑕᐅᒑᖓᑦ. 200 Hz PWM pulse-ᒧᑦ ᐊᑐᖅᑎᑕᐅᒑᖓᒥᒃ, ᑖᒃᑯᐊ ᓴᙱᓂᓖᑦ ᐊᐅᓚᔪᓐᓇᕐᒪᑕ ᑕᐃᒪᓐᓇᑎᒋ ᓱᒃᑲᑎᒋᔪᒥᑦ, ᓂᐱᖅᑯᖅᑐᓗᐊᙱᖦᖢᑎᒃ ᐅᕝᕙᓘᓐᓃᑦ ᐅᖄᓚᑲᑕᒃᖢᑎᒃ ᐃᓄᐃᑦ ᑐᓵᔪᓐᓇᖅᑕᖏᑕ ᐃᓗᐊᓃᖦᖢᑎᒃ. ᑕᒪᓐᓇ ᐸᒡᕕᓇᕈᓐᓇᖅᐳᖅ ᓂᐱᑭᑦᑐᒥ ᐃᓂᒥ ᓲᕐᓗ ᐃᒡᓗᕈᓯᕐᒥ ᕿᒥᕐᕈᐊᒐᖃᕐᕕᖕᒥᓘᓐᓃᑦ. ᐊᓯᐊᑦᑕᐅᖅ ᐊᒃᓱᕈᕐᓇᖅᑐᖅ ᐊᒃᑐᐊᓂᖃᖅᐳᖅ ᓂᕈᐊᕆᔭᖃᕐᓂᕐᒥᒃ PWM-ᒧᑦ ᐊᑐᖅᑕᐅᒐᔪᖕᓂᖓᓂᒃ. ᐊᑐᖅᑕᐅᒐᔪᖕᓂᖓ ᐊᑦᑎᓗᐊᖅᐸᑦ (100 Hz ᑐᖔᓂ), ᐃᓅᑉ ᐃᔨᖓ ᖃᐅᔨᔪᓐᓇᖅᐳᖅ ᖃᒥᑦᑕᖅᑐᒥᒃ, ᑕᒪᓐᓇᓗ ᐃᓗᐊᙱᖦᖢᓂ ᐱᑎᑦᑎᔪᓐᓇᖅᖢᓂᓗ ᐋᓐᓂᐊᖃᕐᓇᙱᑦᑐᓕᕆᓂᕐᒧᑦ ᐊᑲᐅᙱᓕᐅᕈᑎᓂᒃ ᓲᕐᓗ ᓂᐊᖁᙳᓂᕐᒥᒃ ᐃᔨᒃᑯᓪᓗ ᑕᖃᓂᕐᒥᒃ. ᓴᙱᓂᖓ ᖁᕝᕙᓯᓗᐊᖅᐸᑦ (20 kHz−ᒥ ᖁᓛᓂ), ᐃᓅᑉ ᑐᓵᔪᓐᓇᖅᑕᖓᓄᑦ ᕿᒪᐃᔪᓐᓇᖅᐳᖅ, ᐋᖅᑭᒍᑕᐅᓪᓗᓂ ᓂᐱᖅᑯᖅᑐᓗᐊᖅᑐᒧᑦ, ᑭᓯᐊᓂ ᓴᖅᑭᑎᑦᑎᕗᖅ ᓄᑖᓂᒃ ᐊᔪᕐᓇᕈᔪᒃᑐᓂᒃ. ᖁᕝᕙᓯᒃᑐᒻᒪᕆᖕᓂ ᓂᐱᖃᐅᑎᓂ, ᖁᐱᕐᕈᐊᕐᔪᐃᑦ ᐊᒻᒪ ᐱᔪᓐᓇᕐᓂᖏᑦ ᐅᐊᔭᒨᖅᑐᒥ ᐊᓯᔾᔨᖅᑎᑦᑎᔪᓐᓇᖅᐳᑦ ᓄᕗᑦᑎᐊᕆᒃᑐᓂᒃ PWM ᑭᑉᐹᕆᒃᑐᒥ ᐃᖏᕐᕋᓂᐅᔪᒥᑦ, ᐃᑭᓐᓂᖓ/ᖃᒥᙶᕐᓂᖓ ᓱᕙᓕᑭᐊᖑᓕᕐᓗᓂ ᐊᒻᒪ ᒥᒃᖠᒋᐊᖅᑎᑦᑎᓪᓗᓂ ᖃᒥᑉᐸᓪᓕᐊᓂᖓᑕ ᑕᒻᒪᖅᓯᒪᓂᖓᓂᒃ. ᓈᒻᒪᑦᑎᐊᖅᑐᒥᒃ ᓇᓂᓯᔪᓐᓇᖅᐳᖅ, ᓴᓇᔭᐅᑦᑎᐊᕆᐊᓕᒃᓗ.
ᖃᓄᖅ ᑐᓴᖅᓴᐅᔪᓐᓇᖅᑐᓄᑦ ᐊᑲᐅᙱᓕᐅᕈᑕᐅᔪᖅ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓᓄᑦ ᐋᖅᑭᒃᑕᐅᔪᓐᓇᖅᐸ?
ᓴᓇᔩᑦ ᐋᖅᑭᒃᓯᓯᒪᕗᑦ ᖃᔅᓯᑲᓪᓚᖕᓂᒃ ᐊᑑᑎᖃᑦᑎᐊᖅᑐᓂᒃ ᖃᓄᐃᓕᐅᕈᑎᒃᓴᓂᒃ ᓄᖅᑲᖅᑎᑦᑎᓇᓱᒃᖢᑎᒃ ᑐᓴᖅᓴᐅᔪᓐᓇᖅᑐᓂᒃ ᓂᐱᖅᑯᖅᑐᔪᓂᒃ ᐊᒃᑐᐊᓂᓕᖕᓂᒃ PWM ᖃᒥᑉᐸᓪᓕᐊᓂᖏᓐᓂᒃ. ᑐᕌᖓᓛᖑᔪᖅ ᐊᑐᖅᑕᐅᔪᖅ ᐊᖏᒡᓕᒋᐊᕐᓗᒍ PWM ᐃᑭᑦᑕᕐᓂᖓ ᖁᑦᑎᖕᓂᖅᓴᒧᑦ 20 kHz, ᐃᓱᒪᒋᔭᐅᒐᔪᒃᑐᖅ ᖁᑦᑎᖕᓂᖅᓴᖅ ᑭᒡᓕᖓ ᐃᓅᑉ ᑐᓵᓂᖓᓄᑦ. ᐊᐅᓚᓪᓗᓂ 25 kHz−ᒥ ᖁᑦᑎᖕᓂᖅᓴᒥᓪᓘᓐᓃᑦ, ᖃᓄᑐᐃᓐᓇᖅ vibration-induction ᓂᐱ ᓂᐱᖅᑯᖅᑐᓕᖅᐸᒃᐳᖅ ᑐᓴᖅᓴᐅᔪᓐᓃᖅᐸᒃᖢᓂᓗ ᐃᓄᖕᓄᑦ. ᑭᓯᐊᓂ, ᐅᖃᐅᓯᐅᖅᑲᐅᔪᖅ, ᑕᒪᓐᓇ ᐱᔭᕆᑐᓂᖅᓴᒥᒃ ᐅᐊᔭᒨᖅᑐᓂᒃ ᓴᓇᓯᒪᔭᕆᐊᖃᖅᐳᖅ ᐊᐅᓚᑦᑎᓂᐊᕐᓗᓂ ᖁᐱᕐᕈᐊᕐᔪᖕᓂᒃ ᐊᒃᑐᐃᓂᐅᔪᓂᒃ ᐊᒻᒪ ᓇᓗᓇᐃᒃᑯᑕᖅ ᓱᓕᑦᑎᐊᖏᓐᓇᖁᓪᓗᒍ, ᐊᑭᑐᓂᖅᓴᐅᔪᓐᓇᖅᖢᓂ ᐊᔪᕐᓇᕐᓂᖅᓴᐅᓕᕈᓐᓇᖅᖢᓂᓗ ᐊᖁᑎᐅᑉ. ᐊᐃᑉᐸᖓ, ᐊᒻᒪ ᐃᑲᔪᕈᑎᐅᒐᔪᒃᖢᓂ, ᐱᓕᕆᔾᔪᓯᖅ ᐅᖃᐅᓯᕆᓗᒍ ᓇᑭᙶᕐᓂᖓ ᓂᐱᖅᑯᖅᑐᔪᖅ: ᐃᓗᓕᖏᑦ ᓇᖕᒥᓂᖅ. ᐸᓯᔭᒃᓴᐅᓪᓗᐊᑕᖅᑐᑦ ᐅᑯᐊᖑᒐᔪᒃᐳᑦ ceramic output capacitors. ᐋᖅᑭᒍᑎᐅᒐᔪᒃᑐᖅ ᐊᓯᔾᔨᕐᓗᒋᑦ ᑖᒃᑯᐊ ceramic capacitors tantalum capacitors-ᓄᑦ. Tantalum ᓴᙱᓂᓖᑦ ᑕᑯᒃᓴᐅᑎᑦᑎᙱᓚᑦ ᐊᔾᔨᖓᓂᒃ piezoelectric ᐊᒃᑐᐃᓂᐅᔪᒥᒃ ᓂᐱᑭᓐᓂᖅᓴᐅᓪᓗᑎᒡᓗ. ᑭᓯᐊᓂ, ᑖᓐᓇ ᐋᖅᑭᒍᑎ ᓇᖕᒥᓂᖅ ᑕᐅᖅᓰᔾᔪᑎᖃᕈᓐᓇᖅᐳᖅ. ᓴᙱᓂᖃᕐᔪᐊᖅᑐᑦ tantalum ᓴᙱᓂᓖᑦ ᐱᔭᕐᓂᙱᓐᓂᖅᓴᐅᕗᑦ, ᐊᑭᑐᓂᖅᓴᐅᔪᓐᓇᖅᖢᑎᒃ ᐅᔭᖅᑲᓂᒃ, ᐊᒻᒪ ᐊᔾᔨᒌᙱᑦᑐᓂᒃ ᐅᐊᔭᒨᖅᑐᑦ ᖃᓄᐃᑦᑑᓂᖏᑦ ᐃᓱᒪᒋᔭᐅᔭᕆᐊᖃᖅᖢᑎᒃ ᐋᖅᑭᒃᓯᒪᓂᒃᓴᖓᓄᑦ. ᑕᐃᒪᐃᓐᓂᖓᓄᑦ, ᓂᕈᐊᕆᔭᖃᕐᓂᖅ ᖁᑦᑎᖕᓂᖅᓴᒥᒃ ᐃᑭᑦᑕᐅᑎᒥᒃ ᐊᒻᒪ ᐊᑭᑐᓂᖅᓴᓂᒃ ᐃᓚᒃᓴᓂᒃ, ᐅᕝᕙᓘᓐᓃᑦ ᐊᑦᑎᖕᓂᖅᓴᒥᒃ ᐊᒻᒪ ᓂᐱᑭᓐᓂᖅᓴᓂᒃ ᐃᓗᓕᖏᓐᓂᒃ, ᓴᓇᔪᓕᕆᓂᕐᒧᑦ ᐃᓱᒪᓕᐅᕈᑕᐅᓪᓗᐊᑕᖅᐳᖅ ᐊᒃᑐᐃᔾᔪᑕᐅᓪᓗᓂ ᑭᖑᓪᓕᖅᐹᖅᓯᐅᑎᐅᑉ ᐊᑭᖓᓄᑦ, ᐊᖏᓂᖓᓄᑦ, ᐊᒻᒪ ᐃᖏᕐᕋᓂᕆᔭᖓᓄᑦ. ᐃᓚᖏᑦ ᖁᑦᑎᒃᑐᒦᑦᑐᑦ ᐊᖁᑎᑦ ᑲᑎᑎᑦᑎᕙᒃᐳᑦ ᑕᒪᐃᓐᓂᒃ ᐱᓕᕆᔾᔪᓯᕐᓂᒃ, ᐊᑐᖅᖢᑎᒃ ᓂᕈᐊᖅᑕᐅᑦᑎᐊᖅᓯᒪᔪᓂᒃ, ᓈᒻᒪᒃᑐᒥᒃ ᖁᕝᕙᓯᖕᓂᖅᓴᒥᒃ ᐊᒻᒪ ᐱᐅᑦᑎᐊᖅᑐᒥᒃ, ᓂᐱᑭᑦᑐᒥᒃ ᐃᓗᓕᖏᓐᓂᒃ ᓂᐱᖃᙱᖦᖢᑎᒃ, ᖃᒥᑦᑕᙱᖦᖢᑎᒃ, ᐊᒻᒪ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑎᐊᖅᖢᑎᒃ ᖃᒥᑉᐸᓪᓕᐊᔪᑦ.
ᑭᓲᕙ ᐱᐅᓛᖑᔪᖅ PWM ᐊᑐᖅᑕᐅᒐᔪᖕᓂᖓ LED ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒧᑦ?
ᓂᕈᐊᕐᓂᖅ ᐱᐅᓛᒥᒃ PWM ᖃᓄᑎᒋᐅᓂᖓ LED ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓᓄᑦ ᓇᓕᒧᒌᒃᑎᑦᑎᓂᐅᕗᖅ, ᐊᑕᐅᓯᕐᒥᒡᓗ "ᐱᐅᔪᒻᒪᕆᖕᒥᒃ" ᓈᓴᐅᑎᑕᖃᙱᖦᖢᓂ ᑕᒪᐃᓐᓄᑦ ᐊᑐᖅᑕᐅᔪᓕᒫᓄᑦ. ᑭᓯᐊᓂ, ᑐᑭᓯᓇᑦᑎᐊᖅᑐᓂᒃ ᒪᓕᒃᑕᐅᔭᕆᐊᓕᖕᓂᒃ ᐱᑕᖃᖅᐳᖅ ᑐᙵᕕᖃᖅᑎᑕᐅᓪᓗᑎᒃ ᐱᔭᐅᔭᕆᐊᓕᖕᓄᑦ ᐃᓄᐃᑦ ᑕᐅᑐᒍᓐᓇᕐᓂᖏᓐᓄᑦ ᐃᓱᓕᑦᑕᕐᕕᒋᔭᖏᓐᓄᓪᓗ ᐅᐊᔭᒨᖅᑐᑦ. ᒥᑭᓛᖑᔪᖅ ᑕᑯᒃᓴᐅᔪᖅ ᖃᒥᑦᑕᓗᐊᖅᑕᐃᓕᒪᓂᕐᒧᑦ ᐃᓱᒪᒋᔭᐅᒐᔪᒃᐳᖅ 100 Hz-ᖑᓂᖓᓂᒃ, ᑭᓯᐊᓂ ᑖᓐᓇ ᒥᑭᓛᖑᔪᖅ ᓱᓕ ᑕᑯᔭᐅᔪᓐᓇᖅᖢᓂ ᐊᒃᑐᖅᑕᐅᓴᕋᐃᑦᑐᓄᑦ ᐃᓄᖕᓄᑦ, ᐱᓗᐊᙳᐊᖅᑐᒥ ᑕᐅᑐᑦᑎᐊᙱᑦᑐᓄᑦ. ᐊᑦᑕᕐᓇᙱᓐᓂᖅᓴᖅ ᐊᒻᒪ ᐊᑐᖅᑕᐅᒐᔪᖕᓂᖅᓴᐅᓪᓗᓂ ᖃᐅᒻᒪᖅᑯᑏᑦ 200 Hz-ᒥᑦ 500 Hz-ᒧᑦ. ᑖᓐᓇ ᖁᕝᕙᓯᖕᓂᖓ ᓈᒻᒪᒃᑐᖅ ᐲᖅᓯᔪᓐᓇᖅᖢᓂ ᑕᑯᒃᓴᐅᔪᓂᒃ ᖃᒥᑦᑕᖅᑐᓂᒃ ᐅᓄᕐᓂᖅᓴᓄᑦ ᐃᓄᖕᓄᑦ ᐊᑦᑎᒃᑐᒦᖦᖢᓂᓗ ᓴᖅᑭᑎᑦᑎᙱᖦᖢᓂ ᐅᔾᔨᕐᓇᖅᑐᓂᒃ ᓇᓗᓇᐃᒃᑯᑕᓂᒃ ᓱᓕᑦᑎᐊᕐᓂᕐᒧᑦ ᐊᑲᐅᙱᓕᐅᕈᑎᓂᒃ ᐅᕝᕙᓘᓐᓃᑦ ᐱᓗᐊᖅᑐᒥᒃ ᐃᑭᑦᑕᐅᑎᒥᒃ ᐊᓯᐅᔨᓂᕐᒥᒃ ᐊᖁᑎᒥ. ᐊᑐᖅᑕᐅᔪᓄᑦ ᑐᓴᖅᓴᐅᔪᓐᓇᖅᑐᓄᑦ ᓂᐱᖅᑯᖅᑐᔪᓄᑦ ᐃᓱᒫᓘᑕᐅᓪᓗᐊᑕᖅᑐᓄᑦ, ᓲᕐᓗ ᐊᖏᕐᕋᕆᔭᐅᔪᓂ ᐅᕝᕙᓘᓐᓃᑦ ᓴᓇᕝᕕᖕᒥ ᐋᖅᑭᒃᓯᒪᓂᐅᔪᓂ, ᓴᙱᓂᖓ ᖁᕝᕙᕆᐊᖅᑕᐅᒐᔪᒃᐳᖅ 20 kHz−ᒧᑦ ultrasonic ᐅᖓᓯᖕᓂᖓᓄᑦ. 25 kHz, 30 kHz, ᖁᑦᑎᖕᓂᖅᓴᒥᒡᓘᓐᓃᑦ ᐊᑐᖅᑕᐅᓲᑦ. ᑕᐃᒪᐃᒃᑲᓗᐊᖅᑎᓪᓗᒍ, ᑎᑎᕋᐅᔭᖅᑎ ᐊᒃᓱᕉᑎᖃᕆᐊᖃᓕᖅᐳᖅ ᐅᓄᖅᓯᕙᓪᓕᐊᑐᐃᓐᓇᖅᑐᓂᒃ ᐊᒃᓱᕈᕐᓇᖅᑐᓂᒃ ᐅᐊᔭᒨᖅᑐᓂᒃ ᐸᒡᕕᓵᕆᔾᔪᑎᓂᒃ (EMI) ᐊᒻᒪ ᐱᔭᕆᐊᖃᕐᓂᖅᓴᓂᒃ ᐅᐊᔭᒨᖅᑐᓂᒃ ᓴᓗᒪᔪᓂᒃ, ᓱᑲᑦᑐᒥᒃ ᐃᑭᑦᑕᐅᑎᓂᒃ. ᓇᐃᓈᕐᓗᒍ, ᐱᐅᓛᖑᓇᔭᖅᑐᖅ ᖃᓄᖅ ᐊᑯᓂᐅᑎᒋᓂᖓ ᐋᖅᑭᒃᑕᐅᕙᒃᐳᖅ ᐊᑐᖅᑕᐅᔫᑉ ᓯᕗᓪᓕᖅᐸᐅᑦᑎᐅᑎᓯᒪᔭᖏᓐᓄᑦ: 200-500 Hz−ᓂᒃ ᓇᓕᒧᒌᒃᑎᑦᑎᑦᑎᐊᕈᒪᓂᕐᒧᑦ ᐊᔪᕐᓇᙱᓐᓂᖅᓴᒃᑯᑦ ᐱᓕᕆᓂᕆᔭᐅᕙᒃᑐᒥᒡᓗ, ᐊᒻᒪᓗ >20 kHz−ᒥᒃ ᓂᐱᑭᑦᑐᒥᒃ ᐊᐅᓚᑦᑎᓂᐊᕐᓗᓂ ᓂᐱᖅᑯᖅᑐᓗᐊᙱᑦᑐᒥ ᐊᕙᑎᓕᖕᒥ.
ᐊᑲᕐᕉᑎᖏᑦ ᐱᐅᙱᓐᓂᖏᓪᓗ PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ
ᐅᓇ ᑭᑉᐹᕆᒃᓯᓕᖅᓯᒪᔪᖅ ᓇᐃᒡᓕᒋᐊᖅᑎᑦᑎᕗᖅ ᐱᓪᓗᐊᑕᕐᓂᒃ ᐱᐅᓂᖏᓐᓂᒃ ᐱᐅᙱᓐᓂᖏᓐᓂᒡᓗ PWM-ᒧᑦ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒧᑦ ᐱᓕᕆᔾᔪᑕᐅᕙᒃᑐᓂᒃ LED−ᓄᑦ.
| ᑕᐅᑦᑐᖓ | ᐊᑲᕐᕉᑎᖏᑦ | ᐊᑲᐅᙱᓕᐅᕈᑕᐅᔪᑦ/ᐊᒃᓱᕈᕐᓇᖅᑐᑦ |
|---|---|---|
| ᑕᖅᓴᖏᑦ ᐊᔾᔨᒌᒡᔫᒥᔪᑦ | ᐱᐅᔪᒻᒪᕆᐊᓗᒃ. ᑕᖅᓴᖏᑦ ᐊᓯᔾᔨᖅᐸᙱᑦᑐᑦ ᖃᐅᒻᒪᖅᑯᑏᑦ ᖃᐅᒻᒪᖅᑯᑏᑦ ᐊᐅᓚᐃᓐᓇᐅᔭᕐᒪᑕ ᐃᑯᒪᒑᖓᒥᒃ. | ᐊᑐᙱᑦᑐᖅ |
| ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓ ᐊᒻᒪ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᓐᓂᖓ | ᓯᓕᒃᑐᒻᒪᕆᐊᓗᒃ (100% ᑎᑭᖦᖢᒍ 0.1%) ᑕᒻᒪᖅᑕᖅᓯᒪᙱᖦᖢᓂᓗ ᖃᕆᑕᐅᔭᒃᑰᖓᔪᖅ ᐊᐅᓚᑕᐅᓂᖓᓄᑦ ᐱᓕᕆᓂᕆᔭᐅᕙᒃᑐᖅ. | ᖁᑦᑎᒃᑐᒻᒪᕆᖕᓂ ᓂᐱᖃᕐᓂᐅᔪᓂ, ᓇᓗᓇᐃᒃᑯᑕᖅ ᐊᓯᔾᔨᖅᓯᓂᖅ ᒥᒃᖠᒋᐊᖅᑎᑦᑎᔪᓐᓇᖅᐳᖅ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑎᐊᕐᓂᕐᒥᒃ. |
| ᖃᒥᑦᑕᖅᑐᒥᒃ ᐃᒃᐱᒋᔭᖃᕐᓂᖅ | ᑕᑯᔭᒃᓴᐅᔪᓐᓃᖅᑎᑕᐅᔪᓐᓇᖅᐳᖅ ᐊᑐᕐᓗᓂ ᓴᙱᓂᖓᑕ ᖁᓛᓂ 100 Hz (ᐃᓱᒪᓇᖅᑐᖅ 200 Hz+). | ᐊᑦᑎᒃᑐᒥ ᓂᐱᖃᕐᓂᖓ (<100 Hz) ᐱᑎᑦᑎᕙᒃᐳᖅ ᑕᑯᒃᓴᐅᔪᒥ ᐊᒻᒪ ᐊᑲᐅᙱᑦᑐᒥ ᖃᒥᑦᑕᕐᓂᐅᔪᒥ. |
| ᓂᐱᖅᑯᖅᑐᔪᖅ | ᐊᑐᙱᑦᑐᖅ | ᐃᓚᒃᓴᖏᓐᓂᒃ (ᐱᓗᐊᙳᐊᖅᑐᒥ ᐅᔭᖅᑲᓂᒃ ᓴᙱᓂᓕᖕᓂᒃ) ᐊᐅᓚᑎᑦᑎᔪᓐᓇᖅᐳᑦ, ᓴᖅᑭᑎᑦᑎᓪᓗᓂ ᑐᓴᖅᓴᐅᔪᓐᓇᖅᑐᒥᒃ ᓂᐱᒥᒃ 200 Hz-ᒥᑦ – 20 kHz-ᒧᑦ. |
| ᑲᔪᓯᓂᖃᑦᑎᐊᕈᓐᓇᕐᓂᖓ | ᖁᑦᑎᒃᑐᖅ. LED−ᖏᑦ ᐃᑯᒪᑦᑎᐊᖅᖢᑎᒃ ᖃᒥᙶᖅᐸᒃᖢᑎᒡᓗ, ᒥᒃᖠᒋᐊᖅᑎᑦᑎᕙᒃᖢᓂ ᐊᓯᐅᔨᓂᕐᒥᒃ ᐊᖁᑎᒥᒃ. | ᖁᕝᕙᓯᒃᑐᒻᒪᕆᐊᓗᐃᑦ ᐃᑭᑦᑕᐅᑎᖏᑦ ᓴᖅᑭᑎᑦᑎᔪᓐᓇᖅᐳᑦ ᒥᑭᑦᑐᒥᒃ ᐃᑭᑦᑕᐅᑎᒥᒃ ᐊᓯᐅᔨᓂᕐᒥᒃ. |
| ᐅᐊᔭᒨᖅᑐᑦ ᐱᔭᕆᑐᓂᖏᑦ | ᐊᔪᕐᓇᙱᑦᑐᑯᓗᒃ ᑕᐅᑐᒃᑕᐅᓂᖓ ᐊᒻᒪ ᐊᑐᓕᖅᑎᑕᐅᕐᔪᐊᖅᓯᒪᓪᓗᓂ. | ᖁᑦᑎᒃᑐᒦᑦᑐᑦ ᓴᓇᓯᒪᓂᖏᑦ PCB−ᒧᑦ ᐋᖅᑭᒃᓯᒪᔭᕆᐊᖃᖅᐳᑦ ᐊᐅᓚᑦᑎᓂᐊᕐᓗᓂ ᖁᐱᕐᕈᐊᕐᔪᖕᓂᒃ EMI−ᓂᒡᓗ. |
ᐃᓱᓕᔾᔪᑎᒋᓗᒍ, PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᓴᙱᔫᕗᖅ ᐊᓯᔾᔨᒐᒃᓴᐅᓪᓗᓂᓗ ᐱᓕᕆᔾᔪᑎ ᐊᑐᖅᑕᐅᒐᔪᓕᖅᖢᓂ ᐱᐅᔪᒻᒪᕆᖕᓄᑦ LED ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐊᐅᓚᑦᑎᓂᕐᒧᑦ. ᐱᔪᓐᓇᕐᓂᖓ ᐱᑎᑦᑎᔪᓐᓇᖅᖢᓂ ᑕᒻᒪᖅᑕᖅᓯᒪᙱᑦᑐᓂᒃ, ᓯᕕᑐᔪᐊᓗᖕᓂᒃ ᑕᖅᓴᓂᒃ ᐊᔾᔨᒌᒃᑎᑦᑎᙱᖦᖢᓂ ᐊᔾᔨᖃᙱᖦᖢᓂ ᐊᔾᔨᙳᐊᓂᒃ ᐊᑐᖅᑕᐅᕙᒃᑐᓂᒃ. ᐊᒃᓱᕈᕐᓇᕋᓗᐊᖅᑎᓪᓗᒋᑦ ᓲᕐᓗ ᓂᐱᖅᑯᖅᑐᔪᑦ ᐊᒻᒪ ᐅᔾᔨᖅᓱᑦᑎᐊᕐᓗᑎᒃ ᓂᐱᓕᐅᕆᔭᕆᐊᖃᕐᓂᖅ ᐱᑕᖃᕋᓗᐊᖅᑎᓪᓗᒍ, ᑐᑭᓯᐅᒪᔭᐅᑦᑎᐊᖅᑐᑦ ᐊᐅᓚᑕᐅᑦᑎᐊᕈᓐᓇᖅᖢᑎᒡᓗ ᐃᓱᒪᒃᓴᖅᓯᐅᑦᑎᐊᖅᓯᒪᔪᒃᑯᑦ ᓴᓇᔪᓕᕆᓂᒃᑯᑦ. ᑕᐃᒪᐃᓐᓂᕆᔭᖓ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᕐᒧᑦ ᐋᖅᑭᒍᑎ ᐱᑎᑦᑎᓪᓗᓂ ᐱᐅᓛᒥᒃ ᐊᑐᖅᑎᐅᑉ ᐊᑐᖅᐸᒃᑕᖓᓂᒃ, ᓂᕈᐊᕆᔭᐅᓂᖅᓴᐅᓪᓗᓂ ᐊᒥᓱᓄᑦ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ.
ᐊᐱᖅᑯᑕᐅᒐᔪᒃᑐᑦ LED PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓᑕ ᒥᒃᓵᓄᑦ
PWM ᖃᒥᑉᐸᓪᓕᐊᓂᖓ ᐱᐅᙱᓚᖅ ᐃᔨᖕᓄᑦ?
PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓ ᓇᖕᒥᓂᖅ ᐱᐅᙱᑦᑑᙱᓚᖅ. ᐃᔨᒃᑯᑦ ᑕᖃᓇᖅᓯᑐᐃᓐᓇᕆᐊᖃᖅᐳᖅ ᐊᑦᑎᒃᑐᒥ ᖃᒥᑦᑕᕐᓂᐅᔪᒥ (100 Hz ᑐᖔᓂ). ᐱᐅᔪᒻᒪᕆᖕᒥᒃ PWM-ᒥᒃ ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖅ ᐊᑐᓕᖅᑎᑕᐅᓯᒪᔪᖅ 200 Hz-ᓂᒃ ᖁᑦᑎᖕᓂᖅᓴᒥᒡᓘᓐᓃᑦ ᑕᑯᔭᒃᓴᐅᙱᖦᖢᓂ ᐃᓱᒪᒋᔭᐅᒐᔪᒃᖢᓂᓗ ᖁᐊᖅᓵᕐᓇᙱᖦᖢᓂ ᐃᓗᐊᕆᔭᐅᓪᓗᓂᓗ. ᕿᓂᐃᓐᓇᐅᔭᖅᐸᒡᓗᑎᑦ "ᖃᒥᑦᑕᖅᑐᖃᙱᑦᑐᒥᒃ" LED−ᓂᒃ, ᓇᓗᓇᐃᖅᓯᔪᓂᒃ ᖁᑦᑎᒃᑐᒥᒃ PWM-ᒥᒃ ᐊᑐᖅᑕᐅᒐᔪᖕᓂᖓᓂᒃ ᐊᑐᕐᓂᕐᒥᒡᓘᓐᓃᑦ ᐊᓯᖏᓐᓂᒃ ᖃᒥᑦᑕᖅᑐᖃᙱᑦᑐᒥᒃ ᐱᓕᕆᔾᔪᑎᓂᒃ.
ᐆᒻᒪᖅᑯᑎᑐᓗᐊᙱᑦᑐᑦ ᖃᐅᒻᒪᖅᑯᑏᑦ ᖃᒥᑎᑕᐅᔪᓐᓇᖅᐸᑦ PWM-ᒧᑦ?
ᐋᒃᑲ, ᖃᐅᒻᒪᖅᑯᑏᑦ ᖃᐅᒻᒪᖅᑯᑏᑦ ᖃᒥᒍᓐᓇᖅᑐᐃᓐᓇᐅᙱᓚᑦ. ᓂᐅᕕᕆᐊᖃᖅᐳᑎᑦ ᓇᑲᓲᔭᕐᓂᒃ ᓇᓗᓇᐃᒃᑯᑦᑎᖅᓯᒪᔪᓂᒃ "ᖃᒥᑦᑕᐅᑎᓂᒃ." ᓱᓕᒃᑲᓐᓂᖅ, PWM ᖃᒥᑦᑎᕙᓪᓕᐊᓂᖓ ᐊᔪᖏᑦᑎᐊᖁᓪᓗᒍ, ᓇᑲᓲᔭᐅᑉ ᐃᓗᐊᒍᑦ ᐊᖁᑎᖓ ᐋᖅᑭᒃᑕᐅᓯᒪᔭᕆᐊᖃᖅᐳᖅ ᓈᒻᒪᒃᓴᕐᓗᓂ ᑭᐅᓯᔪᓐᓇᕐᓗᓂᓗ PWM ᓇᓗᓇᐃᒃᑯᑕᖓᓂᒃ. ᐊᑐᕐᓂᖅ ᖃᒥᒍᓐᓇᖏᑦᑐᒥᒃ LED PWM ᐅᐊᔭᒨᖅᑐᒥ ᖃᒥᑦᑕᓕᕈᓐᓇᖅᑐᖅ, ᓂᐱᖅᑯᖅᑐᓕᕐᓗᓂ, ᓱᕋᐃᑐᐃᓐᓇᕆᐊᖃᖅᓱᓂᓗ ᓇᑲᓲᔭᕐᒥᒃ ᐅᕝᕙᓘᓐᓃᑦ ᖃᒥᑦᑕᐅᑎᖓᓂᒃ.
ᖃᓄᖅ ᖃᐅᔨᔪᓐᓇᖅᐳᖓ LED ᖃᒥᑦᑎᔾᔪᑎᒐ ᐊᑐᕐᒪᖔᑦ PWM-ᒥᒃ?
ᐊᔪᕐᓇᙱᑦᑐᑯᓗᖕᒥᒃ ᖃᐅᔨᓴᖅᓯᓂᖅ ᐅᖄᓚᐅᑎᕋᓛᒧᑦ ᐊᔾᔨᓕᐅᕈᑎᒧᑦ ᖃᐅᔨᑎᑦᑎᒐᔪᒃᐳᖅ PWM ᖃᒥᑉᐸᓪᓕᐊᓂᖓᓂᒃ. ᐅᖄᓚᐅᑎᕋᓛᖅᐱᑦ ᐊᔾᔨᓕᐅᕈᑎᖓ "ᓱᒃᑲᐃᑦᑐᒧᑦ" ᐅᕝᕙᓘᓐᓃᑦ "pro" ᓱᒃᑲᓕᔪᒥᒃ ᓱᒃᑲᓕᔪᒥᒃ ᓱᒃᑲᓕᔪᒥᒃ ᑐᕌᖅᑎᓪᓗᒍ ᖃᐅᒪᓗᐊᙱᑦᑐᒧᑦ. ᑕᑯᒍᕕᑦ ᕿᕐᓂᖅᑐᓂᒃ ᓇᒡᒍᐊᕐᒥᓕᖕᓂᒃ ᐅᕝᕙᓘᓐᓃᑦ ᖃᒥᑦᑕᖅᑐᓂᒃ ᖃᕋᓴᐅᔭᒃᑯᑦ, ᖃᐅᒪᓂᖓ ᖃᒥᙶᖅᑎᑕᐅᑐᐃᓐᓇᕆᐊᓕᒃ PWM-ᒧᑦ. ᑕᐃᒪᐃᔾᔪᑎᖃᖅᐳᖅ ᐊᔾᔨᓕᐅᕈᑎᐅᑉ ᑲᐃᕙᓪᓚᖕᓂᖓ ᐊᔾᔨᓕᐅᕆᓲᖑᖕᒪᑦ ᓱᒃᑲᓕᔪᒥᒃ ᐃᑭᑦᑕᖅᑐᓂᒃ/ᖃᒥᙶᖅᑐᓂᒃ ᐃᔨᕕᑦ ᑕᑯᔪᓐᓇᙱᑕᖏᓐᓂᒃ.
