Tag Archives: npn transistor

Broadcast-Band RF pojačalo

Broadcast-Band RF pojačalo Parts List: R1 = see text C1,C2,C3,C4 = 10uF, 25volt electrolytic R2 = 270 ohms C5 = 0.1uF, ceramic disc R3 = 500 ohm potentiometer R4 = 1K8 (1800 ohms) Q1 = MPF102 J-FET, or use NTE451 R5 = 10K (10,000 ohms)

Aktivna antena 1-20dB, 1-30 MHz

Aktivna antena 1-20dB, 1-30 MHz Lista dijelova i ostalih komponenti: Poluvodiči: Q1 = MPF102, JFET. (2N4416, NTE451, ECG451, etc.) Q2,Q3,Q4 = 2N3904, NPN transistor Otpornici: Svi otpornici su 5%, 1/4-watt R1 = 1 MegOhm R5 = 10K R2,R10 = 22 ohm R6,R9 = 1K R3,R11