摘要:
The present invention relates to a two-wheel type robot provided with two driving wheels. Supporting legs that closely contact or separate from a body have sharp ends, wherein the sharp ends are formed with curved surfaces for minimizing frictional forces. A cover for securing a battery mounting space is integrally formed in the supporting legs for a supporting leg to pass a raised protrusion smoothly and not be caught on the raised protrusion in the process of passing the raised protrusion, thereby enabling the two-wheel type throwing robot to move stably.
摘要:
A universal ballast control circuit allows a universal ballast to accommodate a gas discharge lamp within a relatively wide wattage range using a low-speed microcontroller. The control circuit drives the ballast to start, run and dim a particular lamp type by providing a control voltage signal to a conventional inverter MOSFET driver to effect dynamic and selective changes in the duty cycle and the frequency of the inverter signal. The present invention allows for the control circuit to be powered by a power supply signal either derived from an half-bridge MOSFET driver, extracted from a boost inductor of the boost converter or generated by an appropriately configured dedicated miniature switch mode power supply. Finally, control circuit can be utilized to drive PFC circuity in a feedback configuration to regulate the level of boost converter output voltage signal.
摘要:
The invention relates to a circuit arrangement for producing a voltage with a ramp-type time history between a first voltage value and a second voltage value according to the temporal modification of an input voltage. The circuit arrangement has an integrator with an input which is subjected to a voltage. Said voltage depends on the difference between the input voltage and the output voltage of the integrator. In known circuit arrangements of this type, the ramp time is modified by a modification of a resistance in the input arm of the integrator. In order to verify the ramp time, the resistance value must be measured, or the time function of the output voltage must be evaluated after a jump in the input voltage. In order to simplify the determination of the ramp time, a voltage limiting circuit is connected in series to the integrator which limits the voltage that is supplied to said integrator to a value predetermined by an adjustable control voltage. The ramp duration can be determined by measuring the control voltage. The circuit arrangement is particularly suitable as a ramp generator for input signals of electrical amplifiers for controlling proportional valves for liquid media.
摘要:
A triangular waveform generator includes a square waveform clock circuit and an active integrator. The active integrator receives input from the square waveform clock circuit and generates a triangular waveform output. An active feedback network is operatively added to the active integrator to reduce the audio band noise content in the triangular waveform output. The feedback network acts as a DC balance without significant sacrifice in the linearity of the triangular waveform output.
摘要:
The field effect transistor of the present invention includes a body diffusion region (201) having a source diffusion (203) region therein. The field effect transistor further includes a metal source contact (208) adjacent the body diffusion region (201) and the source diffusion region (203). The metal source contact (208) forms a Schottky type contact with the body diffusion region (201).
摘要:
A digitally controlled oscillator (100), a synthesizer module (200), a synthesizer (300), and a method for producing an electrical audio signal are presented. The oscillator (100) comprises a digital processing unit (10) configured to generate a first pulse wave at a first output (PulseUp) of the processing unit (10), wherein the first pulse wave is arranged to include pulses at at least two different frequencies. The oscillator (100) further comprises a summing circuit (30) and a linear wave shaper (20). The output (PulseUp) of the processing unit (10) is connected to the summing circuit (30) which is arranged to produce a resultant signal based on at least the first pulse wave. The resultant signal is arranged to be fed into the linear wave shaper (20) which is arranged to produce an output signal at the output (OUT) of the oscillator (100) based on modifying the resultant signal.