SWITCHABLE_POWER_ATTENUATOR

Published:2009/6/18 23:27:00 Author:May | From:SeekIC

Schematic diagram of a switchable power attenuator that can be used to reduce the power output of transmitters that don't have ALC lines. Values for 10 and 20 dB: 10 dB: R1 = R3 = 91 ΩR2 = 75 Ωnearest standard values 20 dB: R1 = R3 = 62Ω R2= 240 Ω nearest standard values Note: R1 must handle the largest share of the input power, and R2 somewhat less. This depends on attenuation selected.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Analog_Circuit/SWITCHABLE_POWER_ATTENUATOR.html

Print this Page | Comments | Reading(3)