H - Electricity – 03 – C
Patent
H - Electricity
03
C
332/73
H03C 1/62 (2006.01) B61L 1/18 (2006.01) B61L 23/04 (2006.01) B61L 23/16 (2006.01) H03F 3/72 (2006.01)
Patent
CA 1129507
(Case No. 6918 ) HIGH POWER AUDIO FREQUENCY TRANSMITTER ABSTRACT OF THE DISCLOSURE A high power amplitude modulated audio frequency trans- mitter having a Twin-T low frequency oscillator, a tickler coil high frequency oscillator, a switching regulator and a switching amplifier. The Twin-T low frequency oscillator pro- duces a sine wave modulating signal which is fed to the switch- ing regulator. The tickler coil high frequency oscillator produces a carrier signal which is fed to the input end of the switching amplifier. The output signal of the switching regulator is fed to the output end of the switching amplifier so that a sine wave modulated signal is developed on the out- put of the switching amplifier.
307524
Fetherstonhaugh & Co.
Westinghouse Air Brake Company
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