Posts Tagged ‘AM receiver’

Simple Coil-less AM receiver by LF356

This AM receiver is working perfectly without the need of coils or even a variable capacitor. The LF356 is the basic component. P1 and P2 are the frequency selectors. Use a small telescopic antenna. The stations selectivity is not perfect but is acceptable. This circuit can be very small and you can power the circuit with a 9 volt battery.

Read More Source:http://www.next.gr/inside-circuits/
Simple-Coil-less-AM-receiver-l6022.html

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ZN414-MK484 Portable AM Receiver

AM reciever with TDA1072A

This reciever uses the TDA1072A which is a complete AM reciever on a chip and it only requires comparitively few peripheral components to complete a high quality AM radio Circuit. Unlike some other AM radio ICs, a minimum number of external tuned inductors are used to preserve reasonable performance, selectivity and quality of output. Only two of these, an RF input transformer and a single winding oscillator coil need be tuned either capacitively or inductively. [...]

Source: http://www.next.gr/inside-circuits/
AM-reciever-with-TDA1072A-l5874.html

ZN414-MK484 Portable AM Receiver

An AM portable radio receiver made from the ZN414 IC. The ZN414 ic has now been replaced by the MK484 which is identical in performance and pinout.

Designed around the popular ZN414 IC this receiver covers the medium wave band band from approximately 550 to 1600 KHz with the values shown. The coil and tuning capacitor may be taken from an old MW radio to save time. The ZN414 IC, has now been replaced by the MK484. The integrated circuit is a 3 pin, tuned radio frequency circuit, and incorporates several RF stages, automatic gain control and an AM detector. It is easily overloaded and the operating voltage of th IC is somewhat critical to achieve good results.

Read More Source:Circuit : Andy Collinson

http://www.mitedu.freeserve.co.uk/Circuits/rf/ZN414.htm

Thank you.

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