Automatic Audio level control with NE570


Posted on Dec 31, 2012

The NE570 can be used to make a high performance compressor FTA, except that the rectifier is connected to the input. This makes gain inversely proportional to the input level so that a drop of 20 dB input level will produce an increase of 20 dB gain. The output remains at a constant level. As shown, the circuit will maintain an output level of ± 1 dB for an input range of + 14 to -43 dB at 1 kHz.



Automatic Audio level control with NE570 - image 1
Click here to download the full size of the above Image.

Additional external components allow the output level to resolve.





Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Lamp Flasher
Build a Portable AM Radio Transmitter
microcontroller Driving low-voltage H-bridge directly from MCU
sap 1 simple as possible computer
Hv440: High Voltage Ring Generator
Moollon Musical Instrument
Multimeter AC voltage measuring circuit
Four flashing lights string circuit 6
Automated instrumentation wiring using interference filters
Electric shaver motor drive circuit



Top