A light monitoring circuit for a manual to automatic record player conversion includes a reflected light sensor and an ambient light sensor. The reflected light sensor is used to determine whether a tonearm-raising piston is positioned under a blade secured to the tonearm. The ambient light sensor is used to detect the amount of ambient light. The signals from the ambient light sensor and reflected light sensor are provided to a circuit that modifies the signal from the reflected fight sensor based on the signal from the ambient light sensor, thereby reducing any likelihood of error due to variations in ambient light.

A light monitoring circuit for a manual to automatic record player conversion includes a reflected light sensor and an ambient light sensor. The reflected light sensor is used to determine whether a tonearm-raising piston is positioned under a blade secured to the tonearm. The ambient light sensor is used to detect the amount of ambient light. The signals from the ambient light sensor and reflected light sensor are provided to a circuit that modifies the signal from the reflected fight sensor based on the signal from the ambient light sensor, thereby reducing any likelihood of error due to variations in ambient light.

A tonearm unit includes: an arm member having a tip to which a cartridge is attached; and a raising and lowering mechanism which raises and lowers the arm member with respect to a phonograph record along an axis. The raising and lowering mechanism includes: a cam base supporting the arm member; a ring cam provided to be rotatable about the axis with respect to the cam base; a first guide portion on the cam base, extending at an angle along a rotation direction of the ring cam; and a second guide portion on the ring cam, extending at an angle along the rotation direction so as to face the first guide portion. When the ring cam rotates with respect to the cam base, the cam base is raised and lowered with respect to the ring cam as a result of the second guide portion sliding along the first guide portion.

A detection system of vinyl record players for detecting end of playback is revealed. The system includes a vinyl record player and a vinyl record control module. The vinyl record player consists of a tone arm, a cartridge connected to one end of the tone arm, a stylus connected to the cartridge, and a turntable. The vinyl record control module is arranged at the vinyl record player and is composed of a signal analysis unit, a signal output unit, a signal reading unit, and a vinyl record control unit electrically connected. The vinyl record control unit is electrically connected to a turntable control unit for stopping rotation of the turntable, or electrically connected to a tone arm lifting unit for ascending the tone arm, or electrically connected to both the turntable control unit and the tone arm lifting unit.

A manual to automatic record player conversion includes a base unit and a blade that attaches to the tone arm. The base unit includes a movable a piston that engages the blade in order to move the tone arm upward, to specified locations on the record, or to the rest position. The position of the blade is detected by locating a reflective strip on the blade using an optical sensor, so that the piston remains positioned under the blade. The piston uses a tapered cone structure to engage a slot in the blade, compensating for any inaccuracies in position of the piston with respect to the blade. The base unit may be structured to interact with a remote control through Bluetooth or other wireless connectivity. The remote control may be a software program or app that is operated through a smart phone, tablet computer, or other computer.

A manual to automatic record player conversion includes a base unit and a blade that attaches to the tone arm. The base unit includes a movable a piston that engages the blade in order to move the tone arm upward, to specified locations on the record, or to the rest position. The position of the blade is detected by locating a reflective strip on the blade using an optical sensor, so that the piston remains positioned under the blade. The piston uses a tapered cone structure to engage a slot in the blade, compensating for any inaccuracies in position of the piston with respect to the blade. The base unit may be structured to interact with a remote control through Bluetooth or other wireless connectivity. The remote control may be a software program or app that is operated through a smart phone, tablet computer, or other computer.

An electric arm lifting and turntable's auto-stop assembly of a record player is revealed. A record player is disposed with a power-driven turntable, a rotatable and movable arm disposed on one side of the turntable, a lift mechanism used for pushing against and moving the arm upward, and a sensor. The arm is moveable over the turntable. The sensor is arranged at an arm rotating shaft of the arm and used for sending a signal while detecting that the arm is moved to a lift point over the turntable. The lift mechanism is activated to move the arm upward and the turntable is stopped simultaneously for protecting a needle on the arm while the sensor detects that the arm has been moved from the turntable to the lift point.

A musical instrument adapted for use with a turntable. Said apparatus uses a rotary pulse generator to create musical tones when in contact with the rotating platter of the turntable. Said apparatus mounts to the turntable in such a way that a rotary pulse generator rotates when in contact with the rotating turntable platter. As the radius at which the rotary pulse generator contacts the turntable platter is increased the frequency of the tone produced increases proportionally, likewise when the radius at which the rotary pulse generator contacts the turntable platter is decreased the frequency of the tone produced decreases proportionally allowing a range of pitches to be sounded.

A musical instrument adapted for use with a turntable. Said apparatus uses a rotary pulse generator to create musical tones when in contact with the rotating platter of the turntable. Said apparatus mounts to the turntable in such a way that a rotary pulse generator rotates when in contact with the rotating turntable platter. As the radius at which the rotary pulse generator contacts the turntable platter is increased the frequency of the tone produced increases proportionally, likewise when the radius at which the rotary pulse generator contacts the turntable platter is decreased the frequency of the tone produced decreases proportionally allowing a range of pitches to be sounded.

A musical instrument adapted for use with a turntable. Said apparatus uses a rotary pulse generator to create musical tones when in contact with the rotating platter of the turntable. Said apparatus mounts to the turntable in such a way that a rotary pulse generator rotates when in contact with the rotating turntable platter. As the radius at which the rotary pulse generator contacts the turntable platter is increased the frequency of the tone produced increases proportionally, likewise when the radius at which the rotary pulse generator contacts the turntable platter is decreased the frequency of the tone produced decreases proportionally allowing a range of pitches to be sounded.