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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: A linearized DC lamp controller.
    Author: Galbraith JA.
    Journal: J Neurosci Methods; 1991 Oct; 39(3):203-6. PubMed ID: 1787740.
    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.
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