AM Receiver


Posted on Dec 17, 2012

This is a compact three transistor, regenerative receiver with fixed feedback. It is similar in principle to the ZN414 radio IC which is now replaced by the MK484. The design is simple and sensitivity and selectivity of the receiver are good. All general purpose transistors should work in this circuit, I used three BC549 transistors in my prototype. The tuned circuit is designed for medium wave, but the circuit will work up to much higher frequencies if a different tuning coil and capacitor are used. I used a ferrite rod and tuning capacitor from an old radio which tuned from approximately 550 - 1600kHz.


AM Receiver
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Remote Controlled Digital Clock with AT89C2051
Simplified-voltage-level-sensor
Protectors Circuit on SMPS (power supply) Schematic Diagram
TV To Scope Converter
The General Electric XT-1-A AM transmitter
Digital frequency counter
AD1865 based audio DAC with I2S input and voltage output
A Light Operated Repeating Timer Circuit
XTR110 expand the drive current circuit diagram



Top