walid Posted September 3, 2009 Report Share Posted September 3, 2009 Hellofrome the datasheet of RX-3 i get the following application circuitand at the left side there is antenna and related component:My question is what the purpose of the transistor Q1?thank you Quote Link to comment Share on other sites More sharing options...
audioguru Posted September 3, 2009 Report Share Posted September 3, 2009 Hi Walid,Q1 is a super-regenerative "radio receiver". It barely oscillates which makes it fairly sensitive if it is not overloaded by other signals near its frequency. It is used in very cheap walkie talkies and remore controlled toys. Quote Link to comment Share on other sites More sharing options...
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