Special Features:

Eled circuit configurations: each pushbutton cap contains 16 leds, 4 per quadrant, and all the electronics necessary for display illumination. The led circuit is either a single circuit with one common, g (style 1) or it is a horizontal split circuit with two commons, g and f (style 2). Each quadrant has its own i/o labeled a, b, c and d according to the quadrant it illuminates. Each quadrant has its own independent electronic circuit consisting of 4 leds and the driver, dimming and protection circuit (ddpc) needed for their operation. The led circuit can be either 28 vdc common anode (current sinking) or 28 vdc common cathode (current sourcing). Polarity is referenced with respect to commons g and f.

Properties:

A switch that is externally actuated by a device such as a push rod or button, which requires pushing for each actuation. The action may be momentary, with mechanical return. The actuating device may or may not be an integral part of the switch. The item may include provisions for mounting indicating lamp(s) or light emitting diode(s) in the actuator. Includes items consisting of individually separable switches that are physically interlocked, that have a common actuator, or are electrically connected. Excludes light-switch; light-switch assembly; switch, beam selecting, headlight; switch, foot; switch, interlock; switch, pressure; switch, push-pull; switch, sensitive and switch assembly. For devices which start, stop, reverse, select and/or regulate the speed of a motor, see starter, motor and controller, motor.