Silicon Microphone Pickup Amplifier Board Preamplifier High sensitivity DC3V-5V

Description

Product Overview
Silicon Microphone Pickup Amplifier Board Preamplifier High sensitivity DC3V-5V
Product Feature
1. Use of high-quality materials, durable
2. Using high-sensitivity microphone + preamplifier circuit design
3. Compact size and exquisite appearance
4. Easy to use
5. Wide range of applications
Parameters.
Board size: 18mm*15mm
Working voltage: DC3V-5V
Output about 30mw, can directly drive ordinary 32 ohm headphones
R5: amplification adjustment resistor, resistance value can be used 4.7k-100k (chip resistor next to the reserved plug-in pads, if there is no chip resistor or welding technology is not good, you can use plug-in resistor.) The higher the resistance value, the higher the gain
R6: for the microphone sensitivity adjustment resistor, shipping default for high sensitivity (resistance value of 0 ohms), resistance can be selected from 0 ohms -10K between (chip resistor next to the reserved plug-in pads, if there is no chip resistor or welding technology is not good, you can use the plug-in resistor.) , the higher the resistance value, the lower the sensitivity
Package list.
Silicon microphone amplifier module * 1
Shipping Policy
Item Location
Payment Mathord
Returns Policy
About Feedback
Shipping Policy
1. We Ship to Worldwide
2. We ship your orders within 1-2 business days after the payment cleared.
3. Item shipped from China via china Post Airmail, reach most of the countries within 2 to 4 weeks.
4. Delivery time depends on destination and other factors, it may takes up to 20 days. If you don't receive
the item after 30 days,please keep in touch with us, we'll investigate and solve the delivery problem.
5. Import duties, taxes, and charges are not included in the item price or shipping cost. These charges
are the buyer's responsibility. Please check with your country's customs office to determine what these
additional costs will be prior to bidding or buying.
Item Location
ShenZhen
Payment Mathord
1. We accept PAYPAL only.
2. Payment must be made within 7 days of auction closing (Unpaid dispute will automatically open when item
is not paid in 7 days).
3. PLEASE NOTE: SHIPPING&HANDING DOES NOT INCLUDE DUTIES, LOCATL TAXES OR ANY OTHER IMPORTATION FEES.
4. Please list your special requests (color, packages, value of declaration, etc.) in the EBAY NOTES SECTION
when you make payment
Returns Policy
1. Customer satisfaction is our top goal. All products are quality checked. They are new and in good
condition when shipped to our customers. If product is defective or damage upon arrival, or wrong
product shipped, please keep in touch with us immediately. Returns accepted within 14 days of delivery date
and item must be in original new condition, not worn or altered in any way with attached tags & wrap.
Otherwise deal is final. Return shipping must be paid by buyer.
2. Please keep in touch with us first if you have anyproblems/questions/concerns. We will be happy to resolve
any issues you may have in a cordial and friendly manner.
3. We appreciate your Positive Feedback, and will do the same in return. PLEASE DO NOT leave
negative feedback without first communication with us. Please allow max 24 HOURS for us to respond
About Feedback
We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is
very important to us. We request that you keep in touch with us immediately BEFORE you give us neutral or
negative feedback, so that we can satisfactorily address your concerns.It is impossible to address
issues if we do not know about them!