Signal transfer device having a transfer characteristic which is

Details Signal transfer device having a transfer characteristic which is Signal transfer device having a transfer characteristic which is

1981-12-21

1984-02-07

Wong, Peter S.

Electricity: power supply or regulation systems

External or operator controlled

Using a three or more terminal semiconductive device as the...

323351, 323354, 323272, 455249, 330284, H03G 330

Patent

active

044306091

ABSTRACT:
A step-controlled attenuator circuit which, in order to avoid audible switching clicks in audio equipment, employs current-controlled switches. A switch is switched on by means of a gradually increasing control current and a switch to be switched off is turned off by means of a gradually decreasing control current.

REFERENCES:
patent: 2969457 (1961-01-01), Felix et al.
patent: 3581222 (1971-05-01), Dunwoodie
patent: 3757240 (1973-09-01), Fogg
patent: 4015192 (1977-03-01), Koyanagi
patent: 4055773 (1977-10-01), Schoeff
patent: 4278945 (1981-07-01), Schroder et al.

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