Attenuator circuit

Details Attenuator circuit Attenuator circuit

1984-03-16

1986-11-25

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307264, 307362, 307494, 307555, H03K 508

Patent

active

046251316

ABSTRACT:
A frequency-to-phase converter comprises an attenuator circuit (1), a delay circuit (2) and a comparator (3). The attenuator circuit (1) is provided with two transistors (T.sub.1, T.sub.2), which are arranged as a differential pair and whose collectors (9, 10) are coupled to the positive supply-voltage terminal (5). A voltage divider (R.sub.x, R.sub.y) with a tap (11) is arranged between the collectors (9, 10). If a signal is applied to the input terminal (4), the attenuated signal is available on the tap (11) and the unattenuated signal is available on the collector (9). The attenuated signal is applied to input (20) through an emitter-follower (T.sub.4) and the unattenuated signal is applied to input (21) of the comparator (3) through an emitter-follower (T.sub.3) and a delay circuit (2). A signal, whose different frequencies are delayed by the same time over a wide frequency range appears on the output (22).

REFERENCES:
patent: 3522443 (1970-08-01), Kanter
patent: 3778646 (1973-12-01), Masaki

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