Abstract A Zener diode, a voltage dropping resistor, and a first transistor are connected in series across a primary d-c source. The emitter-collector junction is in the series path of the diode and resistor. A second transistor has one side of its emittercollector junction connected to the junction of the Zener diode and resistor, and the other side connected both to the base of the first transistor and to one side of the load. The other side of the load is connected to one side of said source. A control signal applied to the base of the second transistor turns the transistor on or off. When the second transistor is turned off, the first transistor is turned on and the voltage dropping resistor is in the circuit. When the second transistor is on, the first transistor is turned off and the load replaces the voltage dropping resistor in the regulation circuit.
Inventors
👤 T Blackburn
👤 O Wisotzky
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-03 19:08
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/0008; H03K19/001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
Apparatus for supplying a regulated and reduced voltage output from a primary d-c source and for minimizing power dissipation derived from said primary source comprising: a control means; a voltage dropping means; means for providing a regulated and reduced voltage output from said primary d-c source, said means being operatively connected between said voltage dropping means and said source; a load having an input and an output, said load being operative from the voltage level of said voltage dropping means; and, switching means operatively connected to said voltage dropping means and said load, said switching means interchanging the connection of said voltage dropping means and said load in response to the control means.
Claim 2
Dependent Claim
113 words
Apparatus for supplying a regulated and reduced voltage output from a primary d-c source and for minimizing power dissipation derived from said primary source comprising: a control means; a voltage dropping means; means for providing a regulated and reduced voltage output from said primary d-c source, said means being operatively connected between said voltage dropping means and said source; a load having an input and an output, said load being operative from the voltage level of said voltage dropping means; and, switching means operatively connected to said voltage dropping means and said load, said switching means interchanging the connection of said voltage dropping means and said load in response to the control means.
Claim 3
Dependent Claim
15 words
Apparatus in accordance with claim 1 in which said voltage dropping means is a resistor.
Claim 4
Dependent Claim
22 words
Apparatus in accordance with claim 2 in which said means for providing a regulated and reduced voltage output is a Zener diode.
Claim 5
Dependent Claim
71 words
Apparatus in accordance with claim 3 in which said switching means further comprises: a first transistor having its emitter-collector junction connected between one side of said voltage dropping resistor and said primary d-c source, and the base connected to one side of said load; a second transistor having its emitter-collector junction connected between the Zener diode-resistor junction and one side of said load, and the base connected to said control means.