Showing posts with label preamplifier. Show all posts
Showing posts with label preamplifier. Show all posts
Monday, June 20, 2011
Active FM Antenna Amplifier of FM Booster
FM booster is one kind of a preamplifier which can be used to listen FM radio programs from distance FM stations clearly. The circuit comprises a common-emitter tuned RF preamplifier which tuned RF preamplifier wired around VHF/UHF transistor 2SC2570.
Serial | Parts Lists | Value |
1 | R1 | 27kΩ |
2 | R2 | 270Ω |
3 | R3 | 1kΩ |
4 | C1 | 5.6pF |
5 | C2 | 5.6pF |
6 | C3 | 1n |
7 | C4 | |
8 | C5 | 10pF |
9 | C6 | 0.1µF |
10 | VC1 | 22pF Trimmer capacitor |
11 | L1 | 1T FROM BOTTOM END |
12 | L2 | 3T, 20SWG 5mm DIA, AIR CORE |
13 | T1 | 2SC2570 |
Adjust input/ output trimmers (VC1/VC2) for maximum gain.
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