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BF961 datasheet specifications
BF961 is a N–Channel Dual Gate MOS-Fieldeffect Tetrode, Depletion Mode.
BF961 Applications:
Input- and mixer stages especially for FM- and VHF TV-tuners up to 300 MHz.
Features:
Integrated gate protection diodes
High cross modulation performance
Low noise figure
High AGC-range
Low feedback capacitance
Low input capacitance
BF961 datasheet
Automatic Gain Control - Volume AGC
The schematic we propose offers a less harmonic signal and a supplementary gain, so it get rid of those annoying variation between speech and music wich offen appears at radio and tv. This automatic gain volume control schematic need a +-15V power supply and 6mA.
Bellow you get the volume agc circuit pcb, graphic and [...]
