AM RADIO

AM RADIO - To build a one I.C AM Radio

adesh manhar ramkissoon

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Description

This AM radio uses a D7642 IC . It has a PNP transistor to amplify the sound coming out from the 8 Ohm Speaker. With a home-made coil wrapped around a old empty thread spool (with an antenna and ground) ... and the given tuning capacitor ,i was able to pick up a Radio Station as far away as Grenada. (THAT IS RADIO GRENADA (IN THE CARIBBEAN) AT 1400 KHZ AM) . I also get stations from neighbouring South American countries. This project was taken directly from ELENCO SNAP CIRCUIT/KIT,MODEL SC-500 , Project 306

Files

DSCN0002.JPG SNAP CONNECTOR /WIRES ... TO PUT PARTS TOGETHER ... THESE CONNECTORS ARE CONDUCTORS ... THEY HAVE METAL WIRES INSIDE THEM JPEG Image - 4.55 MB - 04/16/2019 at 02:26	Preview	Download

DSCN0007.JPG A READOUT PIC. SHOWING VERY BREIF EXPLANATION ON THE CIRCUIT. JPEG Image - 3.62 MB - 04/16/2019 at 02:25	Preview	Download

DSCN0004.JPG SHOWING OFF OTHER PARTS FROM THE KIT JPEG Image - 4.41 MB - 04/16/2019 at 02:24	Preview	Download

DSCN0003.JPG SHOWING OFF PARTS FROM THE KIT JPEG Image - 4.38 MB - 04/16/2019 at 02:23	Preview	Download

DSCN0006.JPG SCHEMATIC /BLOCK DIAGRAM FOR THE A.M RADIO JPEG Image - 4.05 MB - 04/16/2019 at 02:22	Preview	Download

View all 8 files

Components

1 × RESISTOR 100K , 10K
1 × SPEAKER 8 OHMS
1 × SWITCH SLIDE SWITCH
1 × BATTERY HOLDER(S) FOR 6 VOLTS
1 × ANTENNA COIL 50 TURNS

View all 10 components

Build Instructions

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1

HOW TO OPERATE THIS RADIO.

Turn on the slide switch and adjust the variable capacitor for a radio station. Make sure to set the variable resistor control to the left for louder sound . (TAKEN FROM ELECTRONIC SNAP CIRCUITS/KITS SC-500 , PROJECT 306)

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Discussions

adesh manhar ramkissoon wrote 04/16/2019 at 02:04

Thanks for your comment Ken. I have heard about the ZN414, but never used it .

Are you sure? yes | no

Ken Yap wrote 04/16/2019 at 01:56

👍 Good on you.

Nostalgic trivia: Ferranti ZN414. This looks like a descendant. Apparently the ZN414 is still available. It and this didn't use the standard superhet configuration.

Are you sure? yes | no

adesh manhar ramkissoon wrote 04/16/2019 at 02:08

Thanks for your comment Ken. I have heard about the ZN414, but never used it .

reply edit delete

Are you sure? yes | no

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AM RADIO

Description

Files

DSCN0002.JPG

DSCN0007.JPG

DSCN0004.JPG

DSCN0003.JPG

DSCN0006.JPG

Components

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AM RADIO

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