Tip having active circuitry
View Patent ↗A power supply system includes an adapter to receive power from a power source, and output a regulated output voltage (V out ). A tip receives V out from the adapter, and output V out to an electronic device. The tip includes active circuitry to adjust a programming voltage (V prog ). V prog is fed back to the adapter to control a magnitude of V out .
1. A power supply system, comprising:
an adapter to receive power from a power source, and output an output voltage (V out ); and
a tip to receive V out from the adapter, and output V out to an electronic device, the tip including,
a first connector, to receive the output voltage, and to output a programming voltage (V prog ),
a circuit to provide a predetermined fraction of V out ,
a regulator to compare the predetermined fraction of V out with a reference voltage so that V prog and V out are controlled to respective values,
a second connector to provide the desired value of V out to the electronic device, and
a comparator to detect an error in a relationship between V out and V prog and to generate an error signal if there is the error in the relationship between V out and V prog , wherein V prog is fed back to the adapter to control a magnitude of V out .
2. The power supply system of claim 1 , wherein the tip includes a first lighting device to light when the error in the relationship between V out and V prog is detected.
3. The power supply system of claim 1 , the tip further including a switch to open, to prevent V out from reaching the electronic device, when the error is detected.
4. The power supply system of claim 1 , wherein the tip includes a second lighting device to light when no error is detected.
5. The power supply system of claim 1 , the tip further including a switch to close, to allow V out to reach the electronic device, when no error is detected.
6. A tip, comprising:
a first connector, to receive an output voltage (V out ), and output a programming voltage (V prog ), wherein V prog is utilized to control V out ;
a circuit to provide a predetermined fraction of V out ;
a regulator to compare the predetermined fraction of V out with a reference voltage so that V prog and V out are controlled to respective desired values;
a second connector to provide the desired value of V out to an electronic device; and
a comparator to detect an error in a relationship between V out and V prog and to generate an error signal if there is the error in the relationship between V out and V prog .
7. The tip of claim 6 , further including a first lighting device to light when the error in the relationship between V out and V prog is detected.
8. The tip of claim 6 , further including a switch to open, to prevent V out from reaching the electronic device, when the error is detected.
9. The tip of claim 6 , further including a second lighting device to light when no error is detected.
10. The tip of claim 6 , further including a switch to close, to allow V out to reach the electronic device, when no error is detected.
11. The power supply system of claim 1 , wherein the tip includes an opposite connector adapted to mate with a first end of a cable, which is coupled to the adapter, the adapter being a small form factor power supply.
12. The tip of claim 6 , wherein the first connector is adapted to mate with a first end of a cable, which is coupled to the adapter, the adapter being a small form factor power supply.
13. The power supply system of claim 1 , wherein the tip receives a voltage from the adapter, in addition to the output voltage, and the voltage is utilized by the regulator.
14. The tip of claim 6 , wherein the tip receives a voltage from the adapter, in addition to the output voltage, and the voltage is utilized by the regulator.
15. The tip of claim 6 , wherein the comparator detects a voltage error.
16. A tip, comprising:
a first connector, to receive an output voltage (V out ), and output a programming voltage (V prog ), wherein V prog is utilized to control V out ;
a regulator to compare a predetermined fraction of V out with a reference voltage to set V prog to control V out to a desired value;
a second connector to provide the desired value of V out to an electronic device; and
a comparator, which is a different component from the regulator, to detect an error in a relationship between V out and V prog if there is the error in the relationship between V out and V prog .
17. The tip of claim 16 , further including a first lighting device to light when the error in the relationship between V out and V prog is detected.
18. The tip of claim 16 , further including a switch to open, to prevent V out from reaching the electronic device, when the error is detected.
19. The tip of claim 16 , further including a second lighting device to light when no error is detected.
20. The tip of claim 16 , further including a switch to close, to allow V out to reach the electronic device, when no error is detected.