Complete Radio Set with MK484 and Loudspeaker

  
A complete AM radio set based on the MK484 IC (formerly ZN414). It uses a PNP transistor and can drive a 150R loudspeaker. Chad has built a complete radio receiver using 1 IC and a single transistor. The IC requires around 1.2 to 1.6V and this is supplied via the 3V battery in series with 2 diodes 1N4114 diodes, (1N4004 can be substituted) and the 2k volume control.
Complete Radio Set with MK484 and Loudspeaker - schematic




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