Tuesday, June 26, 2018

A 30mW one transistor amplifier is loud


A visitor commented today on how nice does it sound.


When a louder track came up she asked if the volume could be turned down so that it would not interfere with conversation.


The volume could not be turned down as the series potentiometer used at this time was already fully counterclockwise. So it was turned off.


(R, L chanels are connected together at the CD player line output, reproduction is through 1 only speaker and it sounds with great definition and clarity as expected since it is a point source).

It is amazing thinking that the power consumption is only 8mA at 12V. Pure class A (electrons flowing all the time). And any battery lasts for so long.


Signal path, setup:


The Classic Collection CD - Sony portable CD at line out (L+R) - Pleiades 2N3053 - Philips AD5046N - half tiled kitchen with high ceiling










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