Amplifiers – Signal feedback – Phase shift means in loop path
Patent
1977-09-23
1979-04-24
Mullins, James B.
Amplifiers
Signal feedback
Phase shift means in loop path
330109, 330294, 333 28T, H03F 134
Patent
active
041514777
ABSTRACT:
A tone control circuit for stereophonic amplifiers, guitar amplifiers and the like is disclosed. The tone control circuit includes a bass circuit having a first variable resistor whose movable contact is connected to an output terminal of an amplifier circuit, two resistors equal in resistance connected respectively to two end terminals of the variable resistor, and a capacitor shunting the variable resistor. The tone control circuit also includes a treble circuit having a second variable resistor, a resistor, and a capacitor. The treble circuit is connected in parallel to the bass circuit in such a manner that the gain in a particular frequency range of the amplifier circuit can be changed by varying the resistances of the two variable resistors.
REFERENCES:
patent: 3059190 (1962-10-01), Hafler
patent: 3566294 (1971-02-01), Takahashi
patent: 3683293 (1972-08-01), Matsui
Mullins James B.
Nippon Gakki Seizo Kabushiki Kaisha
LandOfFree
Tone control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tone control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tone control circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1993597