Acxico 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module
The piezoelectric ceramic piece is sensitive to the sound wave vibration transmitted by the solid, and is not sensitive to the acoustic vibration of the gas, which can effectively reduce the environmental noise and avoid the whistling caused by the self-excitation. Can be used for guitar, erhu and other musical instruments..
Ultra-small volume dynamic microphone preamplifier board,two-channel design,suitable for a single lithium battery-powered,using AD828 fever op amp chip,suitable for low voltage power supply (3.8-15V).
If you only used one channel,the other channel needs to short-circuit the input with GND,To avoid interference with the signal crosstalk..
Working voltage:DC3.8V-15V.This microphone amplifier board without power regulator circuit,can only use the battery or linear power supply,can not use switching power supply,otherwise there will be interference..
MakerFocus Raspberry Pi 4 Battery Pack UPS, RPI Pack Standard 4000mAh Raspberry Pi Battery USB Pack Raspberry Pi Latest Version V3Plus Expansion Board Power Supply Type-C for RPI 4B 3B+ 3B 2B+
Support charge while discharge: It will not affect the output of UPS power supply when external power outage. Note: If you use UPS to supply power for Raspberry Pi3b/3B+ when it is charging, please ensure that the input power is not lower than 2.5A. Recommended Use: 3V 2.5A power supply. ★Document link and Assemble video: Please get the link from the product description below.
Two power modes: Outdoor portable model and Indoor UPS power Supply mode: 1) As an outdoor portable power supply, the motherboard is powered by a lithium battery. and he maximum external power supply capacity is: 5.1V. 2.5A. 2)As an indoor UPS power supply mode: MicroUSB plugs into a normal 5V 2A power adapter, and the external output interface(USB-A interface) can output a maximum of 5.1V.3A. Battery size: 70mm x 41mm x 9.5mm.
4+2LED are designed to show the status of battery power, charge or discharge:1) 4 Battery power LEDs: Used to show the current battery voltage and power. 2)The function of the Power LED is to display whether the UPS is supplying power to the Pi, and the LED is on: it means the output is 5V. LED off: Indicates that there is no voltage at the output. 3) Charge charging indicator LED: When the UPS is externally charged via the TYPE-C USB interface, the Char....
...tereo Amp Class-A/B 2-ohm. Terminal Layout: Two-Sided. Screw Mount / Wire Cover: Integrated Wire and Mounting Screw Terminals.
Alpine BBX-F1200 600 Watt 4/3/2 Channel Amplifier Car Stereo Amp Class-A/B 2-ohm. Amplifier Type: Class-A/B. Channel Design: 4/3/2 Channel. Thermal Control: Thermal Management Control. Power Supply: DC-DC PWM Power Supply. Power Supply Design: MOSFET Power. Current Protection: Over-Current, Over-Voltage and Thermal Protection. Crossover: Variable Low-Pass / High-Pass. Green/red status LED. 2 pair RCA pre-inputs. Max Power Output Ratings. Total Max Power: 600W. RMS Power Ratings.
Per Channel into 4ohms (%THD+N): 4 x 50W. Per Channel into 2ohms (%THD+N): 4 x 70W. Bridged into 4ohms (%THD+N): 2 x 130W. Sound Tuning. Crossover Frequency (Variable, OFF/LPF/HPF Selectable). 1/2 Ch: LP/HP: 50Hz 500Hz. 3/4 Ch: LP/HP: 50Hz 500Hz. EQ (Equalizer): Bass EQ Fixed Frequency 45 Hz, Q=0.5, Variable Gain 0dB to +12dB (3/4 Ch only). Dimensions. 12.99" x 2.04" x 9.44". General. Power Requirements: 14.4 V DC (11 V to 16 V). Input Sensitivity: 0.2 - 8.0 V.
Frequency Response: 5 Hz - 50 kHz (+ 0,-3 dB). Speaker Impedance: 4 or 2 Signal to Noise: S/N Ratio (IHF A Weighted, Reference: rated power into 4ohms) 95 dB. Features: RockvilIe RWK42 4 Gauge 4 C....
Voilamart LED Message Writing Board, 32" x 24" Flashing Illuminated Erasable LED Message Chalkboard Neon Effect Menu Sign Board with Remote Control, 8 Colors Chalk Markers
...tion, US power adapter with FCC UL certification).
[VERSATILE USE] At daylight, present your business menu with colorful chalk markers in a energy-saving way.
at night, display your message in a vivid and eye-catching way with the 16 colors and 4 various flashing modes Flash/Strobe/Fade/Smooth..
[BATTERY & AC ADAPTER SUPPLY] You can place the large led flashing writing board anywhere without worrying the power supply. The Dry Erase LED Board can be not only plugged in to supply electricity, and also be operated by the BATTERY..
[EASY TO USE & CONVENIENT] No assembly required, ready to go right out of the box, you can easily write message on this led chalkboard with the BONUS 8 colors fluorescent pens, wipe off with a damped cloth, plus the USB connector, hang horizontally or vertically, great for DIY.
ATTENTION GETTER: Perfect for business promotion and attracting attention. This neon message board is a good replacement for regular chalkboards, teaching boards, party decor, electronic message board, light up whiteboards, wedding decorative boards, digital signs and etc. If you meet any quality issue about the board, please contact us and we will give positive solutions within 24 hours to meet your satisfaction!.
Donner Guitar Pedal Board Case & Guitar Pedal Power DC Cable 10-Pack
【PEDAL BOARD CASE】Portable Aluminium Alloy Guitar Effects Pedal Board. Canvas bag that safely and securely transports your pedals from gig to gig..
【PEDAL BOARD CASE】Convenient for Guitarists carry when go out play. 60"professional grade adhesive backed hook-and-loop for securing pedals and zip ties included..
【PEDAL BOARD CASE】The pedal board suits any volumes of power supply: Donner DP-1/DP-2 , T-rex, VoodooLab ,etc.
【PEDAL POWER CABLE】Male to male, one right angle and one straight jack for your effect pedal DC in and out..
【PEDAL POWER CABLE】10 x 23.6" (60 CM) and all the effect power cables are made with 21AWG high quality copper wire. Donner DC pedal power patch cables are replacement cables for your power supplies..
