Constant-voltage power supply circuit and amplifier circuit and DA converter using the constant-voltage power supply circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 31, 1990
Grant Date -
N/A
app pub date -
Jun 10, 1988
filing date -
Jun 12, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A constant-voltage power supply circuit having a light-emitting element and a photosensitive element optically coupled with each other and a driving power source for driving the light emitting element, the circuit using an output voltage of the photosensitive element as a reference voltage; and an amplifier circuit using a constant current converted from the reference voltage of the constant-voltage power supply circuit; and a DA converter adapted for delivering binary digital signals to the constant-voltage power supply circuit.
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