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RF amp wide band

2017-12-21 07:41  
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RF Amplifier Wide Band (40MHZ)

RF_amp_wide_band.gif (5614 bytes)

   ? ?????????? ???? ?????? ????? ??????? ?? ??????? ?????????, ??? ???????????, ?????? ????? ??? ??? ??????? ???, ???? ????????? RF. ? ????????? ??? ??????????, ??? ???????????? ???????????? ????????? ??? ??? ???? ????? ??????????, ???? ??? ?? ?????? , ??? ??? ??? ?? ?????? ??????, ????? ???? 40 ???. ? ??????? ??? ????? ??? ????? ??? 20db ??? ??????????? 7mA , ???? ????????????? ?? 12 ??? 15V. ? ??????? ??? ??? ? ?????? ?????????????? ?? ?????????? ??????? , ???????? ?????????? 75?.

  The sensitivity of receiver it is possible to increase itself considerably, if is interfered, between this and his aerial, a amplifier RF. The amplifier of circuit, does not use in resonant circuits and for this is suitable, so much for mid waves, what for the low waves, up to the 40 MHZ. The gain his it is the order 20db and it consumes 7mA, when it is supplied with 12 until 15V dc. His entry and the exit are adapted with coaxial cable, complex resistance 75ohm.

Part List

R1=75ohmR8=470ohmC5-6=47nF 100V
R2=10KohmR9=2.2KohmQ1-2-3=AF125
R3-7=5.6KohmR10=68ohmJ1-2=Jack BNC
R4-5 =4.7KohmC1-3=47nF 100V
R6=820ohmC2-4=10nF 100V

 

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