zn415 am radio with tda2822m amplifier

Posted on Feb 4, 2014

RF detector circuit, RF amplifier circuit, auto gain control circuit (AGC) etc is already built inside the IC due to which you can easily build a high quality and sensitive am receiver using this IC. The ZN415E IC is an advance version of ZN414 IC, the internal circuit and sensitivity of both the ICs are almost same. The only difference between t

zn415 am radio with tda2822m amplifier
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he two is the audio output. The upgraded version ZN415E contains an 18 DB buffer stage to increase the audio output to drive headphones and small speakers directly. Although the ICs of ZN41x series has been discontinued by the manufacturer few years back but you can still found them in old stocks at your local electronic stores or online. There are also other similar versions of ZN414 IC are available like MK484, TA7642 with similar performance. For more details see: Radio & RF Circuits Section. Coil L1: The Coil L1 is equal to 55 turns of 0. 315mm (30 swg) enameled copper wire wound on 10mm x 100mm long ferrite rod. You can also try other AM radio coils you have in scrap.

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