This sine wave to square wave converter come from redcircuits. AA118, AA119), the minimum input threshold can be lowered. Substituting the two silicon diodes with germanium types (e.g.Minimum output square wave amplitude: 2V peak to peak, with R2 set at max.Output square wave amplitude with 1V RMS input: 3V peak to peak, with R2 set at max.Substituting the two silicon diodes with germanium types (e.g. Minimum output square wave amplitude: 2V peak to peak, with R2 set at max. Output square wave amplitude with 1V RMS input: 3V peak to peak, with R2 set at max. Output square wave amplitude is proportional to input amplitude. Output square wave amplitude is proportional to input amplitude.Best performances are obtained with an input sine wave amplitude from 1V RMS onwards.Minimum sine wave input amplitude needed for good performance: 750mV RMS.Sine Wave to Square Wave Converter Circuit Notes: IC1A amplifies the input sine wave, other inverters included in IC1 squaring the signal and delivering an output square wave of equal mark/space ratio and good rise and fall times through the entire 20Hz-20KHz range. The input sine wave sustains a voltage doubler formed by C1, C2, D1 & D2 that powers the IC.
Its primary feature consists in the fact that no power-source is required: in this manner it can be simply connected between a sine wave generator and the device under test. The work is supported by RFBR, grant 00-15-98578.This sine wave to square wave converter circuit is expected to provide good square waves changing a sine wave delivered from an existing generator. How can I achieve that and what circuit should I. However, I need a dual polarity square wave from -2.5 V to +2.5 V. The square wave that i obtained has a peak to peak voltage range between 0 V and 5 V. Because the additional electrical energy is not sufficient to provide the growth of acoustic activity due to direct mechano-electrical transformations there are grounds to suppose the manifestation of the trigger mechanism. Hi I am using a timer 555 ic to generate a square wave with a peak to peak voltage of 5 V. Non linear effects of model reaction on the excitation cycles were revealed. The value of accretion of the number of acoustic signals, as a result of the action, makes about 1% of the initial level. The main conclusion is that under laboratory conditions, it was possible to detect a tendency to greater acoustic activity of the loaded model under excitation of the latter by electrical impulses. In different experiments the bipolar square-wave pulses of 20 V peak-to-peak amplitude were applied with the frequency of 250 Hz or 2.5 kHz, as also the signals of sinusoidal form. The duration of each cycle varied from 2 to 6 minutes, which allowed accumulating billions of acoustic signals during the experiment consisted of hundreds of cycles. These two subsequent phases composed the observation cycle. The loaded sample was treated by the voltage pulse trains (the initiation phase), which was followed by a pause of the same time duration without electrical pumping (the phase of quiescence). In order to determine the place of cracks inside the sample, the 12-channel system was applied for location of the acoustic sources. The influence of the frequency of electrical impulses on this effect was likewise studied. Several models inclusive both quartz and diabase sand were analysed. The main purpose of the current research was to correlate the value of the initiation effect depending on the presence of minerals with or without the piezoelectric minerals.