{"product_id":"dc-single-supply-7-15v-dual-channel-analog-vu-meter-driver-board-lmc660-lm358-chip-for-audio-tube-amplifiers-low-noise","title":"DC Single Supply 7-15V Dual-Channel Analog VU Meter Driver Board LMC660+LM358 Chip for Audio Tube Amplifiers Low Noise","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAideepen\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCertification\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDIY Supplies\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eElectrical\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eElectronic\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ePlastic\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAudio VU Meter Driver Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDC 7-15V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSize\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e73.5x37.5mm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eStyle\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAudio VU Meter Driver Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAudio VU Meter Driver Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\u003cbr\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"customText\" id=\"24305196\" type=\"custom\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"customText\" id=\"24703975\" type=\"relation\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eFeatures: \u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e1. Using LMC660 and LM358 chips, the performance is stable and reliable. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e2. Low power design with current consumption less than 10mA. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e3. Designed with a full range of 500uA, compatible with most volume meters. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e4. Dual channel driver design, requiring only one circuit board. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e5. High precision and repeatability, easy to operate.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eProduct Introduction: \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eThis VU level meter driver board is designed and manufactured using LMC660 and LM358 chips, making it very suitable for use as an audio accessory. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eThis product uses professional circuit design and high-quality integrated circuit chip components, which have excellent performance and excellent repeatability. The performance is stable and reliable, and the actual use effect is very good. It is recommended to use a single power supply of 7 to 15V DC for power supply, without the need for voltage stabilization. The current consumption, including the volume meter, is less than 10mA. The design of the volume meter has a full range of 500uA, but due to the large output current and wide working range of LM358, it is compatible with most volume meters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eParameter: \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eSingle power supply: DC 7-15V \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eDimensions: 73.5x37.5mm \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eInstallation hole size: 66x31mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eFunction Description: \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e1. Use a single power source for power supply. (Recommended 6-15V). \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e2. Reduce the number of adjustments, improve repeatability, and ensure that anyone can easily operate. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eWhen using a 1Vrms sine wave, make the VU meter read 0dB. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e4. With reasonable accuracy and repeatability, only one circuit board is needed to drive the volume meters for the left and right channels. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003einstructions: \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eHow to adjust the volume gauge \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e1. Only adjust the volume gauge. Mechanical pointer zeroing \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eNot only VU meters, but also all pointer type ammeters, voltmeters, and power meters have a screw for zero adjustment. It can be adjusted with a straight screwdriver. When adjusting, do not connect any devices to the instrument, place it horizontally, and then rotate this screw to reset the instrument to zero. When the environment is relatively dry and the humidity is low, static electricity will be generated between the instrument pointer and the transparent plastic \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eForce causes the inability to adjust the zero point. In this case, static electricity can be eliminated by wiping the plastic part with a cloth soaked in diluted soapy water. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e[Zero position adjustment] \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e1. Connect the VU meter to the corresponding terminal on the circuit board and provide a suitable DC power supply for the VU meter driver circuit, with an output voltage between 7V-12V. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e2. Connect the input of preamplifiers, computers, etc. Please perform this operation in a state without audio signal output or in a silent state. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e3. If the VU meter pointer swings in the positive direction at this time, adjust VR3 (VR4) to make the pointer swing to zero position. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eSensitivity adjustment \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e1. Connect a computer or laptop, tablet or phone for adjustment \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eYou can choose the relevant signal generator software, start it up, and output waveforms in \"sine wave\", \"1kHz\", and \"0dB\" formats. It is very convenient to use the test signal generation software \"WaveGene\" when making adjustments on Windows PC. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eAt this point, adjust VR1 (VR2) to adjust the VU table deviation to \"OVU\". \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e*This circuit does not strictly follow the \"ANSI C16.5-1942\" or \"BS6840\" standards, so there is no need to strictly follow this step. You can adjust according to the music you are listening to. It is recommended to set WaveGene to \"0dB\" so that the header pointer reaches the \"+3\" position. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e2. Adjust using CD player, card holder, digital player, etc \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eIf you have an audio test CD, please adjust it using \"sine wave\", \"1kHz\", and \"0dB\" using the same method as using a computer. The card holder should use a specially recorded audio test tape, and the digital player can play corresponding test audio files, such as MP3, WAV, etc., at least fixed audio signals. Input the left and right channels separately, adjust the potentiometers VR1 and VR2 to make the left and right meter heads indicate the same. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e3. Use a signal generator for adjustment. \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003eSelect sine wave output with a frequency of 1KHZ and an output voltage of 1V. Connect it to the input terminal of the driver board and adjust the potentiometers VR1 and VR2 to make the pointer at the+3 position.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003ePackage Include: \u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e1X driver module\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se0454f42123f4986829ed6a44d524393V.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S7f63fef232cc49d882c10606be1f7936N.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sffea66f0bbc148f490090c20aa200985G.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S2731d0d206b74e01aa75d3df59c43062A.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S8b6c0d668bac4b7ca558b326bcc69faez.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S1b67b696937c4a8d972a079ffad0c757Q.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S2bdaf2d198ad4a528dc3210f7b257f53S.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sd68ed6d8d28f429cab43e10304c9ae7f3.jpg\" slate-data-type=\"image\"\u003e\u003cspan style=\"font-size:16px;font-family:arial, helvetica, sans-serif\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Default Title","offer_id":55261095199019,"sku":"\u003cnone\u003e","price":30.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S413e4177b81943d0b6643d5992286481e.webp?v=1788234126","url":"https:\/\/yoeruyo.com\/products\/dc-single-supply-7-15v-dual-channel-analog-vu-meter-driver-board-lmc660-lm358-chip-for-audio-tube-amplifiers-low-noise","provider":"Yoeruyo","version":"1.0","type":"link"}