Voltage-reducing device with low power dissipation

Details Voltage-reducing device with low power dissipation Voltage-reducing device with low power dissipation

1998-10-22

2000-01-11

Nguyen, Matthew

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

G05F 140

Patent

active

060140186

ABSTRACT:
A voltage-reducing device of low power dissipation is provided, including a plurality of transistors, which are self-connected as diode equivalent. These transistors are then cascaded in series in the same direction and coupled to a voltage source. Since every transistor has a threshold voltage, the voltage at the end of the forward-biased cascaded transistors will be lowered than the voltage source so as to provide a reduced voltage source. Furthermore, since the voltage adjustment of the device is based on the threshold voltage, there is hardly any power dissipation. In addition, we can use different threshold voltages from various transistors to provide different combinations of these threshold voltages to obtain the desired voltage drop.

REFERENCES:
patent: 3935478 (1976-01-01), Okada et al.
patent: 5734290 (1998-03-01), Chang et al.
patent: 5777491 (1998-07-01), Hwang et al.
patent: 5831844 (1998-11-01), Sudo

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