This switching action produces the collector and base waveforms shown in Fig. C2 now begins to charge via R3, and once the voltage on the left hand plate (TR1 base) reaches about +0.6V another rapid change of state takes place. A change of state has occurred at both outputs. Because a sudden voltage change on one plate of a capacitor causes the other plate to change by a similar amount, this sudden rise at TR1 collector is transmitted via C1 to TR2 base causing TR2 to rapidly turn on as TR1 turns off. This rapidly turns off TR1 causing a rapid rise in its collector voltage. With TR1 conducting, its base would have been about 0.6V, so as TR2 conducts TR1 base falls to 0.6 −9V = −8.4V, a negative voltage almost equal and opposite to that of the +9V supply voltage. It is the nature of a capacitor that when the voltage on one plate changes rapidly, the other plate also undergoes a similar rapid change, therefore as the right hand plate of C2 falls rapidly from supply voltage to almost zero, the left hand plate must fall in voltage by a similar amount. The rapidly increasing collector current through TR2 now causes a voltage drop across R4, and TR2 collector voltage falls, causing the right hand plate of C2 to fall rapidly in potential. As this plate of the capacitor is also connected to the base of TR2, this transistor will begin to conduct heavily. Beause TR2 is turned off at this time, its collector will be at supply voltage and its base will be at almost zero potential, the same as TR1 collector, because C1 is still un-charged and its two plates are at the same potential.Ĭ1 now begins to charge via R2 and its right hand plate becomes increasingly positive until it reaches a voltage of about +0.6V. The collector of TR1 will be almost at zero volts as will the left hand plate of C1. Suppose that at switch on, TR1 is conducting heavily and TR2 is turned off. The circuit produces two anti-phase square wave signals, with an amplitude almost equal to its supply voltage, at its two transistor collectors as shown in Fig 4.1.2. iWave-R does not create “black walls” as negative-only ionizer products will do.The circuit switches continuously from one state (TR1 on and TR2 off) to the other (TR1 off and TR2 on) and back again at a rate determined by the RC timing components Cl/R2 and C2/R3. The iWave-R is factory set to clean every third day, which is adequate for a typical installation. Its patented self-cleaning design includes a programmable cleaning cycle that can clean the emitter brushes every 1, 3, 5 or 10 days.
iWave-R always works at peak performance, producing over 160 million ions/cc per polarity (320 million total ions/cc), more than any other ionizer product on the market. Designed for universal mounting, the iWave-R typically installs inside or outside of duct, or it attaches magnetically near the indoor fan in the air handler. IWave-R treats the air in any brand of residential duct air conditioning systems up to 6 tons (2400 CFM) in size with no maintenance and no replacement parts for the life of the device. The ionization process also reduces smoke and odors (cooking, pet, VOCs), as well as other particles (no more sunbeams) in the air. As the air flows past the iWave-R, positive and negative ions actively clean the supply air, reducing certain bacteria and viruses in the coil and living space.
#BIPOLAR SQUARE WAVE GENERATOR#
With technology installed in over 200,000 applications, iWave-R is a self-cleaning needlepoint bipolar ionization generator designed specifically for treating air in residential duct A/C systems.
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