Amplifiers – Hum or noise or distortion bucking introduced into signal...
Patent
1986-02-14
1987-02-17
Wan, Gene
Amplifiers
Hum or noise or distortion bucking introduced into signal...
324329, H03F 126, G01V 311
Patent
active
046442901
ABSTRACT:
An accessory device for use with a metal detector with means to amplify the low, barely audible audio output of the metal detector so that it can be easily heard with further means to dampen louder audio output signals causing those signals to be softer.
REFERENCES:
patent: 4376267 (1983-03-01), Chu et al.
Nitkin William
Wan Gene
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