Consumer electronics symbols
Clear filtersSafety isolating transformerChargers and power adaptersSafety isolating transformerThe two overlapping circles stand for the transformer's two windings and the shield for safety isolation: the unit is a safety isolating transformer, listed under EN 60742, with its variants under EN 61558-2-6. Its low-voltage output winding is separated from the mains input by safety insulation. Variants add a small box underneath (short-circuit-proof), two short legs (not short-circuit-proof) or a letter F (self-protecting).On EN 61558
Self-protecting (fail-safe) safety isolating transformerChargers and power adaptersSelf-protecting (fail-safe) safety isolating transformerThe letter F next to the safety isolating transformer shield marks a self-protecting (fail-safe) safety isolating transformer under the EN 61558 series. Without the F the shield is a plain safety isolating transformer; a small box under the circles instead means short-circuit-proof.On EN 61558
Short-circuit-proof safety isolating transformerChargers and power adaptersShort-circuit-proof safety isolating transformerMarks a short-circuit-proof safety isolating transformer, as found in plug-in power adapters. If the output is overloaded or short-circuited, its temperature stays within the set limits, and once the overload or short circuit is removed it still meets all the safety requirements of its standard. The small box under the circles is what distinguishes it from the plain safety isolating transformer mark.On EN 61558
Source (TV input)Device controlsSource (TV input)Opens the input selection so you can switch the TV to the signal of a connected device, for example an HDMI player or the AV input.On Medion
StopDevice controlsStopEnds playback of the CD, USB file or recording.On Device controls
Switch-mode power supplyChargers and power adaptersSwitch-mode power supplyMarks a power adapter that is an electronic switch-mode power supply (SMPS), as opposed to a conventional transformer. It describes how the adapter is built; it does not ask you to do anything.On Chargers and power adapters
Thermal cut-outChargers and power adaptersThermal cut-outMarks a thermal cut-out: a temperature-operated protective device in the transformer or power supply that breaks the circuit when it gets too hot. The Greek letter theta above the fuse-like rectangle stands for temperature.On Chargers and power adapters
Volume downDevice controlsVolume downLowers the sound volume. On the audio system the volume can also be changed with the VOL control on the front panel.On Device controls
Volume upDevice controlsVolume upRaises the sound volume. On the audio system the volume can also be changed with the VOL control on the front panel.On Device controls
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