RF amplifier circuit diagram

Subscribe by email

This RF amplifier circuit is a very simple and is designed to work for 10 meters band (26 ... 30 MHz) reserved for amateurs.
By making this RF amplifier circuit small power transmitters of 200 mW, can be transformed into a power transmitters reasonable, ranging between 2 and 3 W. The circuit is very simple. Network output filter suppresses noise by at least 55 dB.
Amplifier is suitable for almost all types of transmissions, because of the possibility of adjusting the drain current of FET's by P1. For linear applications (AM and BLU), drain current must be adjusted to 20 mA. If is used for FM-CW, P1 will be adjusted so that no current will not flow through the drain rest. For this case, the idle current is 200 mA and between 300 mA.
Coils are made on cases with a diameter of 9 mm. Care should be taken to wound as tight turns without any space between them.
Coils should be made as follows: L1 = 12 turns enamelled 0.6 mm copper, L2 and L4 = 5 turns 1 mm enamelled copper, L3 = 8 1 mm enamelled copper coils.

Circuit Diagram: 
RF amplifier circuit diagram

Comments

Post new comment

The content of this field is kept private and will not be shown publicly.
CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Enter the characters shown in the image.

Circuit Diagram
LA1800 portable am fm radio circuit LA1800 portable am fm radio circuit

This portable am fm radio circuit is designed using the LA1800 IC and some other external...

BH1417F FM stereo transmitter circuit
BH1417F FM stereo transmitter frequency selection table
BH1417F FM stereo transmitter circuit

Using BH1417F FM stereo transmitter circuit can be designed a high efficiency FM stereo...

FM IF MW radio receiver circuit using LA1260 IC FM IF MW radio receiver circuit schematic diagram

A very simple FM IF MW radio receiver circuit can be designed using the LA1260 IC manufactured...