DC12V Power Amplifier VU Meter Driver Board DB Audio Level Meter for TA7318P DIY Electronics

$21.99
  Availability: In Stock
  Shipping: Free Airmail 
  Estimated Delivery: 
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    Handling Time

    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022

    Returns

    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388
    Israel

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

    Refunds

    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

    Exceptions

    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

    Questions

    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888
    sales@alexnld.com

     


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Product description:

Level meter, VU meter, a small table-driven power amplifier boards, circuit design reference Japan’s and DENON finished machine table head drive circuit, a professional audio amplifier chip.

Features:

1, designed for audio level testing and design of an integrated circuit chip imports, includes the square roots of a dynamic index compression circuit (Example: Input 1V, the 1V; input 4V, the 2V; input 9V, the 3V), taking into account the dynamic and precision instruction pointer swing moderate, avoiding the small signal pointer does not move, the large signal pointer backing of the state.

2, no independent power supply, power supply leads directly from the original, as compared with TA7318P / TA7332P, reduce the cost of a transformer, while inside the chassis takes up less space because the half, the installation is more convenient and flexible.

3, the circuit designed, has the following characteristics: Enter the installation of a 1ow—pass filter circuit to filter out high frequency interference, power supply for harsh environments (such as car audio system). Output sensitivity adjustable, for a variety of specifications header. The most common 12VDC power supply, easy to use in-vehicle device and PC computers. Has a power reverse polarity protection. Have energized pointer protection against boot pointer base, extend header life. Use 0.5W metal film resistors, large power margin to ensure reliable and stable work long hours.

Technical Parameters:

Input Sensitivity: 400Hz input audio signal with Flukes 8025B digital multimeter range measuring AC mV, the input: 97mV, 39 level meter to + 3dB position.
Power supply voltage: DC12V 0.12A.
PCB Size: 5.2cm X 6.3cm.
Backlight power supply terminals: Available DC10 to 12V 50MA. Power for small bulbs backlighting.
Drive VU meter, level meter Sensitivity: Recommended 500UA sensitivity, 630 European resistance. At this point the best damping effect, the level meter damping effect other specifications will be different, the need for further adjustments.

NOTE:
The supply voltage must be strict to ensure 12VDC, 12VDC, although more than a short-term work, but a long time will burn protection circuit. Power connection Wiring must be carried live operation of this man—made damage is not covered by the warranty failure.

Instruct ions for use:

1. the input section:
Lin, 0, Rin, is an audio signal input terminal for CD audio output connected to the left and to the right channel. Or an output terminal connected to the first input terminal selection stage, the former should not connected to the output stage output or volume potentiometer.

2. the output section:
Two VU Meter side ‘+’ and ‘ terminal as an output, respectively, should be connected to Two level meter the + and  terminal.
Drivable level meter sensitivity recommendation: DC 100 microamps to 500 microamps. Should not exceed 1mA.
Board 2500 European blue 3296 series potentiometer can adjust the sensitivity of the two separately header. Clockwise, sensitivity can be improved.
LA, LB for the backlight power supply terminals, RA, RB of the other set backlight power
supply terminal.

Package Included:

1 x VU Meter Driver Board DB Audio Level Meter

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