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Audio - all subcategories
High headroom input circuitry. 9V Battery powered.
author: RED Free Circuit Designs visits: 8635 
Measures 10mV to 50Volt RMS in eight ranges
author: RED Free Circuit Designs visits: 8484 
Small simple audio mixer with a few components around one FET transistor (2N3819).
author: visits: 7987 
Small but useful device. It can amplify signal from many audio devices for your headphones.
author: RED Free Circuit Designs visits: 7758 
This circuit indicates audio output power via three LEDs. Nice addon to your amplifier.
author: RED Free Circuit Designs visits: 7638 
Small, easy to build low impedance microphone amplifier
author: visits: 7390 |
 Audio (49) Power & high voltage (43) Radio (23) Light & LED (31) Tools & measurement (40) Telephone (18) Automotive (10) Microcontrollers (12) Sensors & control (47) Timers & oscillators (40) Miscellaneous (26)
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