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one transistor fm radio

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benten

New Member
i onced searched for a the circuit diagram for an fm radio reciever but did not find any. I finally found a one transistor fm radio circuit diagram with some tips on how to build them. i have found most of the components to assemble but hav problem finding the transistor J310 OR TDA7052 please can anyone give me other options of transistors to use?
 

kchriste

New Member
Forum Supporter
A J310 looks like it might be a JFET. The TDA7052 doesn't cross to a transistor for me. Post the schematic or link to the project page. That'll help you get decent replies
 

mneary

New Member
The J310 is a common junction FET. If you can't find the J310 then you must not be in America or Europe or Asia or.....

The TDA7052 is not a transistor; it an old integrated circuit 1W amplifier designed by Philips and now made by NXP Semiconductor. As with the J310, the normal suppliers have thousands in stock.

We can guess all we want, but nobody can actually help you if your location is not known. Add location in your UserCP.
 
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EN0

Member
You won't get much RF output power with a single transistor, usually there are two. The first one will take care of the oscillator for the FM range while the second one is an RF amplifier.
 

JimB

Super Moderator
Most Helpful Member
You won't get much RF output power with a single transistor, usually there are two. The first one will take care of the oscillator for the FM range while the second one is an RF amplifier.

The TDA7052 is an AUDIO amplifer, I hope that you are not thinking that it will amplify 100Mhz.

JimB
 

audioguru

Well-Known Member
Most Helpful Member
Go to Google and enter Radio Shack Special. A link to the RSS super-regenerative FM radio will be listed. It is a garbage one transistor radio that has an AM detector that detects FM (with lots of distortion and whistles) by tuning to one side of the station then the AM detector "slope detects" the FM modulaion. It uses the MPF102 Jfet but the J310 might be a replacement. It uses the LM386 little power amplifier but the TDA7052 will replace it.
 
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