Product Description

Thomas RECORDING LED light sources controller provides tunable DC constant-current for our high power LED light sources. In some experiments illumination stability is vital because any fluctuations or “hot spots” may cause inconsistent protein activation in the cells under illumination. Thomas RECORDING constant-current source controllers guarantee stable LED light emission. Our controllers can be triggered by external signal sources to generate time-pulsed light emissions from the LED light sources.

Features

Thomas RECORDING LED light sources are controlled by a mains powered, constant-dc-current output light source controller that enables extremely precise control of light power for optogenetic stimulation.

The TREC LED controller is a powerful, compact, lightweight and economical alternative used to provide control output of up to 1000 mA to one Thomas RECORDING LED module. It features an adjustable LED constant-current output. The output current can be adjusted continuously from 0 A to 1.0 A turning the rotary knob on the front of the controller.

The TREC LED controller is compatible with Thomas RECORDING high power, high brightness LED modules for which the maximum forward DC current is 1000 mA. When driving these LEDs, care must be taken to ensure the LED current limit is set at or below the LED's maximum forward DC current rating.

This controller is a great choice for those wanting to deliver constant light output, or are able to generate their own TTL/analog control signals.

The TREC LED controller offers three operation modes:

• Constant Current Mode: The output current is set between 0 mA and 1000 mA using the knob on the front of the unit.

• Modulation Mode: The output current exactly follows the amplitude and waveform of the voltage input signal, independent of the knob setting on the top of the T-Cube control unit.

• Trigger Mode: The output current switches to the level that has been selected by the knob at the controller front panel.

The operation mode can be changed by a switch next to the current selector knob. The trigger and modulation modes are controlled by an external voltage in the 0 to 5 V range.

LED Signal Chain

TREC offers the complete signal chain for optogenetic experiments, from the generation of the stimulation signal using PC soft- and hardware via the LED light source controller and LED light source to optical fibers or optoelectrodes and corresponding holders and adapters.

TREC signal chain for optogenetic experiments from signal generator to optical fibers

Ordering Information

LED Light Source

LED Controller

PC Soft-/Hardware

Product Brochure

Selected Publications

[1] Lima, S.Q.; Hromádka, T.; Znamenskiy, P.; Zador, A.M.;

PINP: A new method of tagging neuronal populations for identification during in vivo electrophysiological recording;

PLos ONE, July 2009, Vol 4, Issue 7

[2] J. A. Pochapski, J. Franke, W. Kruse, R. Jacob, S. Herlitze, C. Da Cunha, R. K. W. Schwarting, L. Melo-Thomas

Optogenetic stimulation of inferior colliculus neurons elicits mesencephalic locomotor region activity and reverses haloperidol-induced catalepsy in rats

Sci Rep. 2025 Apr 12;15(1):12649. doi: 10.1038/s41598-025-96995-4.

[3] J. Hüer, P. Saxena, S. Treue

Pathway-selective optogenetics reveals the functional anatomy of top–down attentional modulation in the macaque visual cortex

Proceedings of the National Academy of Sciences 121 (3), e2304511121

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