Shop with DX Mobile Site Yes No
DIY Sound Control Switch Electronic Components Production Kit

DIY Sound Control Switch Electronic Components Production Kit

For Sound Control Deivce / Switch LED Light Lamp + More

0 0
SKU: 437337
  • US$4.24

    You Save 18 %

  • 3.46
  • Free shipping To UNITED STATES Via SuperSaver

    Ship to:
    Choose Shipping Method
    Shipping Service Shipping Cost Estimated Delivery Time Tracking Information
    FREE SHIPPING Typically ships 7-10 business days
    Typically ships 7-10 business days
    Typically ships 4-7 business days
    Typically ships 4-7 business days
    Typically ships 4-7 business days

    Please note: the standard and expedited shipping costs are only estimates; the actual shipping price will be shown on the order page.

  • Handling Time: Ships within 1 Business Days
  • Dispatch: Ships within 4-7 business days
  • Form Color:

    Green + Multicolored

Quantity: +
Quantity 3+ units 5+ units 10+ units More
Rate US$3.07 shipped US$3.06 shipped US$3.05 shipped

Related Products

DIY Sound Control Switch Electronic Components Production Kit

DIY Sound Control Switch Electronic Components Production Kit

US$3.46 US$4.24 18%OFF 0
working principle:
Q1 and Q2 are composed of secondary audio amplifier circuit, audio signal received by the MK1 by C1 coupling to the Q1's base, amplified by the collector directly fed to Q2's base, collector in Q2 get a negative square wave, used to trigger the bistable circuit. R1 C1, the circuit frequency response for high sensitivity limit in the range of about 3kHz. When the power supply is switched on, the bistable circuit state for Q4 cutoff, Q3 saturation, D3 light. When MK1 receives the control signal after two amplifier outputs a negative square wave, after differential processing after a negative sharp pulse through D1 added to the Q3 base, the circuit quickly reversed, D3 was lit. When MK1 received a control signal circuit, and flipped out D3.

Note: electret mic which foot is connected with the outer casing is negative, the light emitting diode and an electrolytic capacitor feet long as cathode (length is short negative) and triode installed in front of a kind of direction, resistance and ceramic capacitors without polarity.

Quantity1 piece
Form ColorGreen + Multicolored
Dimensions & Weight
Dimensions 1.97 in x 1.5 in x 0.79 in (5 cm x 3.8 cm x 2 cm)
Weight 0.32 oz (9 g)
Packing List
1 * PCB board
1 * Microphone
1 * Cable (15cm)
1 * LED
2 * Inductors
14 * Resistors
4 * 9013
6 * Capacitors

All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed.

To enable volume discounts on this site, use coupon code: BULKRATE during checkout. You will see a discount applied at the bottom of the shopping cart. Competitive pricing is available. Contact us for details.

Quantity 3+ units 5+ units 10+ units
Rate US$3.07 shipped US$3.06 shipped US$3.05 shipped

What is Bulk Rate? BulkRate is a semi-wholesale system with items priced separately from retail. When you use bulk rates, a flat $1.70 registered air mail fee will automatically be added to your cart to ensure delivery of package. While BulkRate's intention is to offer cheaper prices when you buy in bulk, because it is priced separately it on occassions show a higher than retail price. That's why we ask you to enter BULKRATE as a coupon code to manually activate the rates. You can always opt not to use the bulk rates. If you are looking for wholesale prices please feel free to contact us.

Wholesale Inquiry

  • US$3.46

    Free shipping

Do you want to buy more and get a better price?

Please fill in the short form below and we will try to work on it and provide you a better price.

*Order Quantity:
Please enter a valid number.
*Your E-mail Address:
Unless you are already on our newsletters list,we will not send any e-mail to you that are not related to this review.
*Your Country:
Provide a Province/State
*Shipping Method:
*Notes / Details:

(price, bundle, special offer, gifts, etc)

Validation Code:
Validation Code
Can't see it?
Your inquiry is submitted successfully!
* The information requested above is used for quotation only.We will get back to you within 48 hours upon receving your inquiry.
Customer's impression:
There are no customer's impression yet.
Create Review

Share your reviews, photos and videos here!

Review Program

New Arrivals

Tags of this product

Add your tags:


Post a new topic

Please note that DealExtreme Forums are not a sales or product support board. For support questions, please contact us via support ticket at http://cs.dx.com/ for a guaranteed response. We make every effort to make the quickest replies.

Recommendations Based On Your Recent History

1 /

Your last viewed items

0 1

DX Everywhere