A linearized DC lamp controller

James A. Galbraith

doi:10.1016/0165-0270(91)90098-K

A linearized DC lamp controller

Research output: Contribution to journal › Article › peer-review

Abstract

The design of a simple and inexpensive battery powered lamp controller for microscope lamps commonly used in patch clamp and other biophysical studies is described. The circuit linearizes the normally exponential voltage-intensity curve of standard 12-V lamps by using an operational amplifier to provide feedback to the drain of a power MOSFET. When the unit is turned off, a charging circuit recharges the battery at a constant potential until the battery voltage reaches a preset level. The charging voltage is then reduced to balance the self-discharge rate of the battery.

Original language	English (US)
Pages (from-to)	203-206
Number of pages	4
Journal	Journal of Neuroscience Methods
Volume	39
Issue number	3
DOIs	https://doi.org/10.1016/0165-0270(91)90098-K
State	Published - Oct 1991
Externally published	Yes

Keywords

Electrophysiology
Lamp controller
Microscope
Patch-clamp recording
Tissue culture
Voltage clamp

ASJC Scopus subject areas

General Neuroscience

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10.1016/0165-0270(91)90098-K

Cite this

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title = "A linearized DC lamp controller",

abstract = "The design of a simple and inexpensive battery powered lamp controller for microscope lamps commonly used in patch clamp and other biophysical studies is described. The circuit linearizes the normally exponential voltage-intensity curve of standard 12-V lamps by using an operational amplifier to provide feedback to the drain of a power MOSFET. When the unit is turned off, a charging circuit recharges the battery at a constant potential until the battery voltage reaches a preset level. The charging voltage is then reduced to balance the self-discharge rate of the battery.",

keywords = "Electrophysiology, Lamp controller, Microscope, Patch-clamp recording, Tissue culture, Voltage clamp",

author = "Galbraith, {James A.}",

note = "Funding Information: This work was supported by a fellowship from the Anesthesia Foundation of the University of California at San Diego. Special thanks to J.R. Galbraith for his technical advice, and R.R. My-ers for laboratory facilities.",

year = "1991",

month = oct,

doi = "10.1016/0165-0270(91)90098-K",

language = "English (US)",

volume = "39",

pages = "203--206",

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AU - Galbraith, James A.

N1 - Funding Information: This work was supported by a fellowship from the Anesthesia Foundation of the University of California at San Diego. Special thanks to J.R. Galbraith for his technical advice, and R.R. My-ers for laboratory facilities.

PY - 1991/10

Y1 - 1991/10

N2 - The design of a simple and inexpensive battery powered lamp controller for microscope lamps commonly used in patch clamp and other biophysical studies is described. The circuit linearizes the normally exponential voltage-intensity curve of standard 12-V lamps by using an operational amplifier to provide feedback to the drain of a power MOSFET. When the unit is turned off, a charging circuit recharges the battery at a constant potential until the battery voltage reaches a preset level. The charging voltage is then reduced to balance the self-discharge rate of the battery.

AB - The design of a simple and inexpensive battery powered lamp controller for microscope lamps commonly used in patch clamp and other biophysical studies is described. The circuit linearizes the normally exponential voltage-intensity curve of standard 12-V lamps by using an operational amplifier to provide feedback to the drain of a power MOSFET. When the unit is turned off, a charging circuit recharges the battery at a constant potential until the battery voltage reaches a preset level. The charging voltage is then reduced to balance the self-discharge rate of the battery.

KW - Electrophysiology

KW - Lamp controller

KW - Microscope

KW - Patch-clamp recording

KW - Tissue culture

KW - Voltage clamp

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DO - 10.1016/0165-0270(91)90098-K

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JO - Journal of Neuroscience Methods

JF - Journal of Neuroscience Methods

IS - 3

ER -

A linearized DC lamp controller

Abstract

Keywords

ASJC Scopus subject areas

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