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Regurgitator PCB 8PAK

Regurgitator PCB 8PAK
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$64.90AUD inc GST for Australian Customers
(Approx $41.47USD outside Australia)


Product Information
Stock Level13

 

Regurgitator PCB can be used to convert any balanced or unbalanced signal in to balanced or unbalanced signal out with trim pot control from -10db loss to +18db gain.

 

PCB comes as 8 x V groove snapable PCBs in one with side power connections already joined between the 8 PCB's.

 

We can sell the PCBs still joined in 1 to 8 multiples.   Single PCB measures 58.2mm (2.3") x 25.4mm (1"). 8 Way PCB measures 58.2mm (2.3") x  203.2mm (8")

 

 

Regurgitator Audio circuit by Rob Squire. Power circuit & PCB by Joe Malone.

 

Rob's test figures using a 5532 on +/-18V rail

Max balanced output is +29dBu or +26dBm
Noise when trimmed for unity gain is -93dBu unweighted ( this is on the bench with no case and there is a small amount of 50Hz being picked up )
Noise when trimmed for +18dB gain is -73dBu unweighted ( as above )
Noise when trimmed for -10dB gain is -102dBu ( this is the limit of my analyser )
Distortion at unity gain and +10dBu out is 0.002% ( this is the limit of my analyser )
CMRR is -70dBu at unity gain of test unit with normal 1% resistors.
Input Z balanced is 15K and unbalanced is exactly 7.5K looking into either the hot or cold leg.
So this achieves the aim of high CMRR and impedance balanced input. Unlike a normal diff amp where the input Z is different into each leg.

 

 

 

 


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