Apparatus and method for providing a current exponentially propo

Details Apparatus and method for providing a current exponentially propo Apparatus and method for providing a current exponentially propo

1987-09-04

1988-09-06

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

323316, 323907, 330254, 330256, 330278, 330293, G05F 144, H03G 320

Patent

active

047695889

ABSTRACT:
An apparatus and method for providing a current exponentially proportional to voltage and directly proportional to temperature is disclosed. An output current is provided that is exponentially proportional to amplifier output voltage and directly proportional to temperature for automatic gain control. The output current is applied to an amplifier for varying gain.

REFERENCES:
patent: 3805145 (1974-04-01), Gordon
patent: 4263560 (1981-04-01), Ricker
patent: 4333056 (1982-06-01), Cave
R. D. Gillingham, "Differential Amplifier with DC Restore", IBM Technical Disclosure Bulletin, vol. 23, No. 9, Feb. 1981, pp. 4042-4043.
"A Monolithic Analog Exponential Converter", by J. H. Huijsing and J. Anne van Steenwijk, IEEE Journal of Solid-14 State Circuits, vol. SC-15, No. 2, pp. 162-168 (Apr. 1980).

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