Driving current control circuit

Details Driving current control circuit Driving current control circuit

1989-12-12

1991-07-09

Shoop, Jr., William M.

Electricity: motive power systems

Battery-fed motor systems

318254, 318439, H20P 700

Patent

active

050308971

ABSTRACT:
A driving current control circuit capable of controlling the logarithmic base current of two transistors in a current driver to control a drive current for a motor. This control circuit controls the current of the current regulator depending on a control signal, thereby controlling the driving current for the transistors in the current driver. The control circuit includes an output current mirror composed of two output-side transistors and a single input-side transistor. The two output-side transistors control the inflow and outflow of the driving current for the current driver. A single phase compensating condenser is connected to the input-side transistor. This arrangement makes the entire circuit simple and compact and causes an improved controlling characteristic.

REFERENCES:
patent: 4336562 (1982-06-01), Kotowski
patent: 4415249 (1983-11-01), Tsuzuki et al.
patent: 4535276 (1985-08-01), Yokobori
patent: 4633358 (1986-12-01), Nagano
patent: 4651067 (1987-03-01), Ito et al.
patent: 4651068 (1987-03-01), Meshkat-Razavi
patent: 4661766 (1987-04-01), Hoffman et al.
patent: 4686436 (1987-08-01), Archer
patent: 4746843 (1988-05-01), Taenzer

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