Are the 24VDC options from our Panel Mount monitors compatible for aircraft use?
We have come across several questions regarding our 24VDC Options on our Panel Mount monitors.  There seems to be some confusion on whether it works on an aircraft power supply.  As it stands, aircraft power output is 28V.  A vast majority of modern day aircrafts are powered by 24VDC and the confusion lies on the designation of the 24VDC.  Which in all actuality, the 24VDC covers voltages that range from 20VDC – 30VDC.  So in essence, the 24VDC designation can actually handle 20V up to 30VDC thus making it compatible for the 28V the aircraft requires. As long as the connection on the monitor can regulate the 28vdc output, it can sustain the integrity of the function of the monitor.  Aircraft Panel Mount Monitors

The 24VDC options provides adequate safety and compatibility specifications while performing definite tasks.  There are some things to consider however.  While most aircraft grade power connectors are MIL-DTL-5015 *(a military specification, covers electrical circular connectors with solder or removable crimp contacts) our connectors do vary.  It would be wise to specify which connectors are needed for a given project. Choosing the right unit is crucial when it comes to operating any aircraft, therefore meeting specific requirements for your operation is very important to us.  For each operation, there are numerous components that should be considered.

Why do aircrafts use 28VDC and what is the the significance of DC to DC converter?
Airplanes operate on many different voltages, but most aircraft systems use 28 volts DC.  This is because higher voltages are imperative in the transmission of power.  DC powers are commonly supported by “self-exciting” generators where the power is produced by a commutator, regulating the output voltage.  Permanent Magnet Generators are used to conduct 28VDC power for high-integrity systems.

A DC to DC converter is an electronic circuit which converts a source of direct current (DC) from one voltage level to another.  Its importance is simple-- it offers a method to increase voltage from a partially lowered battery.  In return, the voltage then saves space instead of using multiple batteries to accomplish the equivalent concept. Most DC to DC converters also regulate the output voltage.

Why can’t we use 24VDC?
Because higher voltages are essential when it comes to aircraft systems, 24VDC is compatible. 28VDC indicates the voltage required for continuous power, thus making it the standard for all aircrafts.