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Priority to ES0319901ApriorityCriticalpatent/ES319901A3/en
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Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment
(AREA)
Circuits Of Receivers In General
(AREA)
Abstract
Improvements in the tuners for ultra high frequencies, characterized in that the antenna input is followed by an initial stage of amplification in high frequency, followed by a conversion, by heterodynia due to a tuned local oscillator, in intermediate frequency, whose amplification is carried out in two stages in cascade, with a reduced noise level and a high gain factor, so that the different stages, all of them transistorized and stabilized, coupled inductively and by resistance-capacity, are automatically regulated in sensitivity and frequency, obtaining the output a signal of the appropriate frequency to the input circuits of the receiver, with high gain, low noise level and considerable bandwidth, which allows to have a reception in high frequency fidelity. (Machine-translation by Google Translate, not legally binding)
ES0319901A1965-11-161965-11-16Improvements in the tuners for ultraelevated frequencies. (Machine-translation by Google Translate, not legally binding)
ExpiredES319901A3
(en)
Improvements in the circuits of tuning, conversion, amplification and detection for television receivers. (Machine-translation by Google Translate, not legally binding)
Improvements in the circuits amplifiers, conversors and detectors of radio receptors to transistors. (Machine-translation by Google Translate, not legally binding)
Improvements in the oscillating circuits and amplifiers in radio receivers to transistors. (Machine-translation by Google Translate, not legally binding)
Improvements in intermediate sound frequency amplifier circuits and frequency detector in television receivers. (Machine-translation by Google Translate, not legally binding)
Improvements in the conversion circuits, detectors and amplifiers in the radio receivers to transistors for modulated frequency and modulated amplitude. (Machine-translation by Google Translate, not legally binding)