Volume control apparatus

Details Volume control apparatus Volume control apparatus

1981-09-08

1984-05-29

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

330298, H03G 320, H03F 2100

Patent

active

044517963

ABSTRACT:
A volume control apparatus for use in an acoustic apparatus with a sound signal source and an amplifier which is usable as an alarm or warning apparatus. The volume control apparatus is provided with a motor for operating a volume control variable resistor, a manually operatable presetting variable resistor and first, second and third selectively operable manual switching means. Upon each power supply, the volume control variable resistor is always automatically set by the motor to a position corresponding to a preset position of the presetting variable resistor regardless of its position prior to the power supply.
By selectively operating the first and second switching means at a desired moment after the power supply, the volume control variable resistor is set by the motor from the position corresponding to the preset position of the presetting variable resistor to a desired position regardless of its previous position.
By operating the third switching means at a desired moment after the power supply, the presetting variable resistor can be adjusted while listening to a sound produced by a speaker.

REFERENCES:
patent: 4101840 (1978-07-01), Fricke et al.

Affiliated with

Also associated with

Rating

Volume control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Volume control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Volume control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1400316