Revision as of 06:05, 23 September 2011 edit ThatPeskyCommoner (talk \| contribs) Pending changes reviewers, Rollbackers 19,289 edits Added {{unreferenced}} tag to article (TW) ← Previous edit		Revision as of 11:37, 24 March 2015 edit undo 203.219.130.17 (talk) No edit summary Next edit →
Line 1: {{unreferenced\|date=September 2011}} A '''modulation transformer''' is an [[Transformer\|audio-frequency transformer]] that forms a major part of most [[Amplitude modulation\|AM]] transmitters. The primary winding of a modulation transformer is fed by an audio amplifier that has about 1/2 of the rated input power of the transmitter's final amplifier stage. The secondary winding is in series with the power supply of that final radio-frequency amplifier stage, thereby ~~lowering~~allowing the audio signal to lower and ~~raising~~raise the ~~operating~~instantaneous DC supply voltage of the power amplifier (PA) tube or transistor. Considering that the PA device is operated as a [[Electronic_amplifier#Class_C\|class-C]] amplifier, i.e. as a switch, the modulation transformer is responsible for the amplitude modulation (AM) of the transmitter. [[Category:Transformers (electrical)]]

Modulation transformer: Difference between revisions