[minima] Re: BFO circuit
- From: farhanbox@xxxxxxxxx
- To: minima@xxxxxxxxxxxxx
- Date: Fri, 28 Feb 2014 07:00:00 +0000
Raj, thanks for pointing that one out. We can add a resistor between the
colllector and the diode (or a diode as per raj's suggestion). I will build
this today and try it out.
- f
Sent from BlackBerry® on Airtel
-----Original Message-----
From: Raj <vu2zap@xxxxxxxxx>
Sender: minima-bounce@xxxxxxxxxxxxx
Date: Fri, 28 Feb 2014 11:31:36
To: <minima@xxxxxxxxxxxxx>
Reply-To: minima@xxxxxxxxxxxxx
Subject: [minima] Re: BFO circuit
When the switching Tr is biased ON, it will short collector to Gnd and
therefore enable the (L) trimmer while the other diode will also conduct and
connect the (R) trimmer. This will not work IMHO. Add a diode from collector to
the first (L) trimmer that may work!
Raj, vu2zap
At 28-02-2014, you wrote:
>Slight modification to BFO circuit which trys eliminating mode switching using
>relay.
>Inline image 2
>
>
>73
>VU3ELR
>
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>Content-Disposition: inline; filename="bfo.JPG"
>Content-ID: <ii_1447702d533e1c3e>
>X-Attachment-Id: ii_1447702d533e1c3e
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