Control circuit and FM stereo receiver using same

Details Control circuit and FM stereo receiver using same Control circuit and FM stereo receiver using same

1978-05-08

1980-03-18

Olms, Douglas W.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

179 1GM, 320 1, 328106, 307294, H04H 500, H03K 5153

Patent

active

041940873

ABSTRACT:
Circuitry for generating from an input signal having leading and trailing edges at least two output control signals where the leading and trailing edges of the first one of the two output control signals respectively precede and follow the leading and trailing edges of the second one of the two output control signals, the circuitry comprising a first transistor responsive to the input signal; time constant circuit means having a predetermined time constant connected to the first transistor; a second and third transistors responsive to the first transistor and the time constant circuit means; bias means for so establishing different operating voltages for the second and third transistors that, upon application of the input signal to the first transistor, the first and second output control signals are respectively outputted by second and third transistors due to the fact that they are actuated at different times by the output signal from the first transistor and the time constant circuit depending on whether the input signal is rising or falling. Also an FM stereo receiver incorporating the above circuitry.

REFERENCES:
patent: 3388271 (1968-06-01), Feiner et al.
patent: 3593033 (1971-07-01), Shimizu
patent: 3711652 (1973-01-01), Metro
patent: 3999132 (1976-12-01), Smith

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