Volume control device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 14, 1982
Grant Date -
N/A
app pub date -
Jun 2, 1980
filing date -
Jun 2, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for controlling power delivered to an audio speaker to thus control volume output of an electronic music system, maintains the input impedance seen by the driving source within a range close to the speaker impedance. The circuit comprises a ladder control network including a series resistor coupled to the speaker and a switched parallel resistor string. Preferably, the resistor string has multiple taps selectively coupled to the speaker via a multiposition rotary switch for setting incremental relative volume levels. In one embodiment the rotary switch is a single pole switch and a separate switch is employed in series with the resistor string for controlling maximum power delivery to the speaker. In an alternate embodiment the rotary switch is a two pole switch having the second pole in series with the resistor string for controlling maximum power delivery to the speaker.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully