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Home Saturable Reactors Frequency Tripler  
See also: Magnetic Frequency Multipliers, Frequency Doubler  
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Frequency Tripler
The frequency tripler affords a simple example of a frequency multiplier. It uses three saturable reactors supplied from a 3phase source as shown in Fig. 74. The firing angle α_{f}, must be adjusted so that only one reactor is saturated at a time, otherwise a linetoline short circuit occurs. Then, according to Eq. 71, the firing angle must be at least α_{f}, = 2π/3 for a frequency tripler, since m = 3. Wave forms of currents in each phase and in the output are shown in Fig. 74(b). Because there is some inductance in practical devices, even when saturated, the corners in the current waves are not quite as sharp as those shown. The current in an inductive load having a Q of about 0.5 has fairly good wave form since the inductance tends to smooth out the wave.


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