[Laser] New optical front ends

[steve kavanagh]

Interesting circuits, Yves.  

Can you explain the purpose of the 2.2 Meg resistor,
the 0.47/0.1 uF capacitors and the 1k resistor (BF
circuit) ?

What does "BF" mean ? Basses frequences ?

What modulation frequencies are you using with each
circuit ?

73,
Steve VE3SMA

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