Dimming Features

• Four Independent Channels

• 1.5 Amps per Channel (Typically up to 18 Post Lights Per Channel)

• Capable of Dimming LED Lighting

• Low frequency Pulse Width Modulation control eliminates bulky heatsinks

• Overload and Short Circuit Protection

• Compact and Lightweight

LC-40e $119

LC-50 $179

LC-40e Additional Features

• "Bi-Linear" Response Gives More Sensitivity at the Dim End of the Range Where it is Needed Most

• "Master Bright" mode allows all or selected channels to be joined and controlled by a single knob

Bi-Linear Dimming Response

LC-50 Additional Features

• Two Analog outputs for dimming these devices:

  • Garmin 400/500 series Radios

  • Garmin GTX 327/330 Transponders

  • Garmin GMA 347 Audio Panel

  • Garmin Displays G900X, G950, G1000 etc…

  • Tru-Trak ADI Pilot

  • Tru-Trak Pictorial Pilot

  • Newer PS Engineering Audio Panels

• Rate and Offset adjustments for each channel allows exact matching of dimming behavior of each channel.  Multiple channels can then be joined and controlled by a single knob.

Rate and Offset Control Pots

Q: Why can't I just use a simple rheostat or potentiometer to dim the panel lights?

A: Potentiometers can't handle the current of more than two or three typical panel post lights. The LC-40e and LC-50 will dim up to eighteen post lights per channel. 

 

Q: Why do I need more than one dimming channel?

A: General aviation airplanes have notoriously poor cockpit lighting.  In part, this is due to trying to dim all the lights with one control.  Invariably some lights need to be brighter than others.  For example, post lights generally need to be operated dimmer than internally lit instrument lights.  Did you know that airliners have more than twenty dimming control knobs in their cockpits to attain proper brightness for each group of lights?

 

Q: What is the difference between the LC-40e and LC-50?

A: 1) Certain devices do not accept PWM (Pulse Width Modulation) dimming and require an analog signal which is only available on the LC-50.  See the list of devices located below the LC-50 image.

     2) The "Master Bright" feature of LC-40e allows matching the offset of each dimming channel while the LC-50 has both rate and offset adjustments for each of its four channels.  As a result, the LC-50 has more exact matching of each lighting channel's behavior which is useful for a single cockpit knob installation.