Abstract: A stepper comprising: a direction controller having a front wheel set and a steering wheel connected to the front wheel set; a rear wheel transmission having a gear transmission and a rear wheel shaft, the gear transmission having an active gear, a chain and a passive gear, the active gear connected to the passive gear via the chain, the rear wheel shaft having a rear wheel set and connected to the passive gear; a supporting shaft connected to the direction controller and the rear wheel transmission; and a foot-hand swinging set having a pedal and a joystick having a handle, the pedal mounted on two sides of the supporting shaft, one end of the pedal connected to the active gear, the joystick connected to another end of the pedal. The present invention can be propelled by only single leg, and can be rehabilitation and locomotion apparatus.

Abstract: A stepper comprising: a direction controller having a front wheel set and a steering wheel connected to the front wheel set; a rear wheel transmission having a gear transmission and a rear wheel shaft, the gear transmission having an active gear, a chain and a passive gear, the active gear connected to the passive gear via the chain, the rear wheel shaft having a rear wheel set and connected to the passive gear; a supporting shaft connected to the direction controller and the rear wheel transmission; and a foot-hand swinging set having a pedal and a joystick having a handle, the pedal mounted on two sides of the supporting shaft, one end of the pedal connected to the active gear, the joystick connected to another end of the pedal.

Abstract: An infrared emitter comprises a preamplifier, an infrared RF emitter, an infrared channel controller and a photodiode emitting-medium. With the emitter, by switching between two channels with an infrared channel controller, and by the mode of arrangement of a plurality of infrared emitting diodes and two Darlington amplifying circuits on the parts in a photodiode emitting-medium, crosstalk disturbance during transmitting carrier waves to a wireless earphone is inhibited. The emitter is applied to industries of audio/video playing, car audio/video equipment and hi-fi equipment.

Abstract: An infrared emitter comprises a preamplifier, an infrared RF emitter, an infrared channel controller and a photodiode emitting-medium. With the emitter, by switching between two channels with an infrared channel controller, and by the mode of arrangement of a plurality of infrared emitting diodes and two Darlington amplifying circuits on the parts in a photodiode emitting-medium, crosstalk disturbance during transmitting carrier waves to a wireless earphone is inhibited. The emitter is applied to industries of audio/video playing, car audio/video equipment and hi-fi equipment.