Monostable multivibrator for use in pulse count demodulator or t

Details Monostable multivibrator for use in pulse count demodulator or t Monostable multivibrator for use in pulse count demodulator or t

1979-09-12

1980-11-25

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

307273, 329128, H04B 116, H03D 304, H03K 3284

Patent

active

042362539

ABSTRACT:
In a monostable multivibrator including a gate circuit having at least two inputs where an input signal is applied to a first one of the two inputs and a feedback signal to the other input, a differentiator circuit responsive to the output from the gate circuit, a differential inverter including a current switching circuit where an output load is connected to the collector of the output transistor for deriving an output signal, the improvement comprising an AC grounded base transistor connected in series between the collector of the second transistor and the output load.
Even when a low-pass filter is connected to the output load of the above multivibrator, the output signal thereof is stabilized which is important when the multivibrator is used in combination with a low-pass filter in an FM receiver pulse count demodulating circuit.

REFERENCES:
patent: 2720584 (1955-10-01), Sloughter
patent: 3025417 (1962-03-01), Campbell, Jr.
patent: 3389273 (1968-06-01), Haines
patent: 3419735 (1968-12-01), Seer, Jr. et al.
patent: 3473133 (1969-10-01), Hummel
patent: 3569744 (1971-03-01), Garrahan

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