Research paper
A linearized DC lamp controller

https://doi.org/10.1016/0165-0270(91)90098-KGet rights and content

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.

References (5)

  • O.P. Hamill et al.

    Improved patch-clamp techniques for high resolution current recording from cells and cell-free membrane patches

    Pflügers Arch.

    (1981)
  • F. Hoffart

    Charger extends lead-acid-battery life

    EDN

    (1988)
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Copyright © 1991 Published by Elsevier B.V.