overcurrent protectionoverdabpedoverdampingoverdriven amplifieroverflowoverheatoverioadoverlapoverlap addoverlap angleoverlap saveoverloadoverload capacityoverload leveloverload protectionoverrideovershootoverspeedovertensionoverthrow distortion overshoot distortionovertone crystal unit harmonic mode ecrystal unitovertravelovervoltageovervoltage crowbarovervoltage protectionovervoltage protective deviceovervoltage relayovervoltage testoverwoltageoverwriteovetoneovpowen bridgeoxidationoxide coaged cathodeoxide isolationoxide passivationoxygenoxygen free high conductivity copperozone producing radiationpp bandp channelp channel mosp channel transistorp n junctionp p ip regionp type conductionp type conductivity