square wave


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square wave

Cardiology An abnormal BP response to the Valsalva maneuver–VM, seen in left ventricular failure; BP ↑ at the onset of the VM, remains elevated until VM is released, after which the BP abruptly drops to baseline without 'overshooting' the baseline pressure, accompanied by little change in the pulse pressure or tachycardia.
References in periodicals archive ?
Every frequency component of an ideal square wave is significant in contributing to that 0 psec rise time.
But for most home power use you will want a modified square wave inverter like the Trace, PowerStar, Heart or Statpower.
AG52 offers fast rise time square waves, lower noise floor, higher output & DIM testing
Now designers can point and click to create square wave oscillators, a voltage-controlled sample and hold circuit, and a sum/difference stage with biquadratic filter.
The alternating waveform, a sawtooth wave to square wave, expands the skin pores without perforating the skin and without burning the tissue or denaturing the drug.
The SC4901 can operate from a simple square wave input thus eliminating the need for a primary side regulator and the supporting circuitry across the isolation boundary.
The signal takes the form of a square wave, where the time period of the waveform varies in response to changes in capacitance, and hence is proportional to fuel height.
The clock input can accept a low-level differential sine wave or square wave signal down to 0.
Available functions include a nonvolatile time-of-day clock/calendar, alarm interrupts, watchdog timer, and square wave output.