A linearized DC lamp controller

Research output: Contribution to journalArticlepeer-review


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 languageEnglish (US)
Pages (from-to)203-206
Number of pages4
JournalJournal of Neuroscience Methods
Issue number3
StatePublished - Oct 1991
Externally publishedYes


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

ASJC Scopus subject areas

  • Neuroscience(all)

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