Voltage-to-current converter using current mirror circuits

Details Voltage-to-current converter using current mirror circuits Voltage-to-current converter using current mirror circuits

1996-03-21

1998-05-19

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

363 73, H02M 3335

Patent

active

057540390

ABSTRACT:
A voltage-to-current converter includes first and second current mirror circuits, a bipolar transistor, a start-up transistor, and a resistor. The first current mirror circuit which generates a first current proportional to the second current received from the second current mirror circuit. The second current mirror circuit generates an output current and the second current each of which is proportional to a third current. The bipolar transistor receives the first current from the first current mirror circuit at a connecting point which connects the collector to the base of the bipolar transistor, and the emitter is connected to the input terminal. And the resistor connects the connecting point to the second current mirror circuit such that the third current is supplied to the second current mirror circuit.

REFERENCES:
patent: 4591739 (1986-05-01), Nagano
patent: 5451859 (1995-09-01), Ryat

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