H - Electricity – 03 – H
Patent
H - Electricity
03
H
333/85
H03H 11/24 (2006.01) H03H 11/54 (2006.01)
Patent
CA 1204179
ABSTRACT: Attenuator circuit. 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 tran- sistors (T1, T2), which are arranged as a differential pair and whose collectors (9, 10) are coupled to the positive supply-voltage terminal (5). A voltage divider (Rx, Ry) with a tapping (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 tapping ( 11 ) and the unattenuated signal is available on the collector (9). The attenuated signal is applied to input (20) via an emitter- follower (T4) and the unattenuated signal is applied to in- put (21) of the comparator (3) via an emitter-follower(T3) and a delay circuit (2). A signal, whose different frequen- cies are delayed by the same time over a wide frequency range appears on the output (22).
450702
Brilka Joachim
Dullemond Dirk J.
Kasperkovitz Wolfdietrich G.
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
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